74HC243 Datasheet by NXP USA Inc.

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PHILIPS
1. General description
The 74HC243 is a high-speed Si-gate CMOS device and is pin compatible with low power
Schottky TTL (LSTTL). The 74HC243 is specified in compliance with JEDEC
standard no. 7A.
The 74HC243 is a quad bus transceiver featuring non-inverting 3-state bus compatible
outputs in both send and receive directions. The 74HC243 is designed for 4-line
asynchronous 2-way data communications between data buses.
The output enable inputs (OEA and OEB) can be used to isolate the buses.
The 74HC243 is similar to the 74HC242 but has non-inverting (true) outputs.
2. Features
Non-inverting 3-state outputs
2-way asynchronous data bus communication
Low-power dissipation
Complies with JEDEC standard no. 7A
ESD protection:
HBM EIA/JESD22-A114-B exceeds 2000 V
MM EIA/JESD22-A115-A exceeds 200 V.
Multiple package options
Specified from 40 °Cto+80°C and from 40 °C to +125 °C.
74HC243
Quad bus transceiver; 3-state
Rev. 03 — 12 November 2004 Product data sheet
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 2 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
3. Quick reference data
[1] CPD is used to determine the dynamic power dissipation (PD in µW).
PD=C
PD ×VCC2×fi×N+(CL×VCC2×fo) where:
fi= input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL×VCC2×fo) = sum of outputs.
4. Ordering information
Table 1: Quick reference data
GND = 0 V; T
amb
=25
°
C; t
r
=t
f
= 6 ns.
Symbol Parameter Conditions Min Typ Max Unit
tPHL, tPLH propagation delay An to Bn;
Bn to An CL= 15 pF; VCC = 5 V - 6 - ns
CIinput capacitance - 3.5 - pF
CI/O input/output capacitance - 10 - pF
CPD power dissipation
capacitance per transceiver VI= GND to VCC [1] -26- pF
Table 2: Ordering information
Type number Package
Temperature range Name Description Version
74HC243N 40 °C to +125 °C DIP14 plastic dual in-line package; 14 leads (300 mil) SOT27-1
74HC243D 40 °C to +125 °C SO14 plastic small outline package; 14 leads;
body width 3.9 mm SOT108-1
74HC243DB 40 °C to +125 °C SSOP14 plastic shrink small outline package; 14 leads;
body width 5.3 mm SOT337-1
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 3 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
5. Functional diagram
Fig 1. Functional diagram
Fig 2. Logic symbol Fig 3. IEC logic symbol
001aab953
ENABLE
EXITING
OEB
OEA
A0 B0
B1A1
13
11
10
1
3
4
B2A2 95
B3A3 86
001aab950
ENABLE
EXITING
OEB
OEA
A0 B0
B3A3
13
11
8
1
3
6
001aab951
1
13 EN1
1
211
3
10
4
9
5
8
6
EN2
jjjjjjj EEEEEEE 7
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 4 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
6. Pinning information
6.1 Pinning
6.2 Pin description
Fig 4. Pin configuration
243
OEA VCC
n.c. OEB
A0 n.c.
A1 B0
A2 B1
A3 B2
GND B3
001aab948
1
2
3
4
5
6
7 8
10
9
12
11
14
13
Table 3: Pin description
Symbol Pin Description
OEA 1 output enable input (active LOW)
n.c. 2 not connected
A0 3 data input or output
A1 4 data input or output
A2 5 data input or output
A3 6 data input or output
GND 7 ground (0 V)
B3 8 data output or input
B2 9 data output or input
B1 10 data output or input
B0 11 data output or input
n.c. 12 not connected
OEB 13 output enable input
VCC 14 positive supply voltage
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 5 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
7. Functional description
7.1 Function table
[1] H = HIGH voltage level;
L = LOW voltage level;
Z = high-impedance OFF-state.
8. Limiting values
[1] Above 70 °C: Ptot derates linearly with 12 mW/K.
[2] Above 70 °C: Ptot derates linearly with 8 mW/K.
Table 4: Function table[1]
Control Input or output
OEA OEB An Bn
L L input B = A
HL ZZ
LHZZ
H H A = B input
Table 5: Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to
GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
VCC supply voltage 0.5 +7 V
IIK input diode current VI < 0.5 V or VI>V
CC + 0.5 V - ±20 mA
IOK output diode current VO<0.5 V or
VO>V
CC + 0.5 V -±20 mA
IOoutput source or sink
current VO = 0.5 V to VCC + 0.5 V - ±35 mA
ICC, IGND VCC or GND current - ±70 mA
Tstg storage temperature 65 +150 °C
Ptot power dissipation
DIP14 package [1] - 750 mW
SO14 and SSOP16
packages
[2] - 500 mW
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 6 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
9. Recommended operating conditions
10. Static characteristics
Table 6: Recommended operating conditions
Symbol Parameter Conditions Min Typ Max Unit
VCC supply voltage 2.0 5.0 6.0 V
VIinput voltage 0 - VCC V
VOoutput voltage 0 - VCC V
tr, tfinput rise and fall
times VCC = 2.0 V - - 1000 ns
VCC = 4.5 V - 6.0 500 ns
VCC = 6.0 V - - 400 ns
Tamb ambient
temperature 40 - +125 °C
Table 7: Static characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Typ Max Unit
Tamb =25°C
VIH HIGH-level input voltage VCC = 2.0 V 1.5 1.2 - V
VCC = 4.5 V 3.15 2.4 - V
VCC = 6.0 V 4.2 3.2 - V
VIL LOW-level input voltage VCC = 2.0 V - 0.8 0.5 V
VCC = 4.5 V - 2.1 1.35 V
VCC = 6.0 V - 2.8 1.8 V
VOH HIGH-level output voltage VI=V
IH or VIL
IO=20 µA; VCC = 2.0 V 1.9 2.0 - V
IO=20 µA; VCC = 4.5 V 4.4 4.5 - V
IO=20 µA; VCC = 6.0 V 5.9 6.0 - V
IO=6.0 mA; VCC = 4.5 V 3.98 4.32 - V
IO=7.8 mA; VCC = 6.0 V 5.48 5.81 - V
VOL LOW-level output voltage VI=V
IH or VIL
IO=20µA; VCC = 2.0 V - 0 0.1 V
IO=20µA; VCC = 4.5 V - 0 0.1 V
IO=20µA; VCC = 6.0 V - 0 0.1 V
IO= 6.0 mA; VCC = 4.5 V - 0.15 0.26 V
IO= 7.8 mA; VCC = 6.0 V - 0.16 0.26 V
ILI input leakage current VI=V
CC or GND; VCC = 6.0 V - - ±0.1 µA
IOZ 3-state OFF-state current VI=V
IH or VIL; VCC = 6.0 V;
VO=V
CC or GND --±0.5 µA
ICC quiescent supply current VI=V
CC or GND; IO=0A;
VCC = 6.0 V - - 8.0 µA
CIinput capacitance - 3.5 - pF
CI/O input/output capacitance - 10 - pF
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 7 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
Tamb =40 °C to +85 °C
VIH HIGH-level input voltage VCC = 2.0 V 1.5 - - V
VCC = 4.5 V 3.15 - - V
VCC = 6.0 V 4.2 - - V
VIL LOW-level input voltage VCC = 2.0 V - - 0.5 V
VCC = 4.5 V - - 1.35 V
VCC = 6.0 V - - 1.8 V
VOH HIGH-level output voltage VI=V
IH or VIL
IO=20 µA; VCC = 2.0 V 1.9 - - V
IO=20 µA; VCC = 4.5 V 4.4 - - V
IO=20 µA; VCC = 6.0 V 5.9 - - V
IO=6.0 mA; VCC = 4.5 V 3.84 - - V
IO=7.8 mA; VCC = 6.0 V 5.34 - - V
VOL LOW-level output voltage VI=V
IH or VIL
IO=20µA; VCC = 2.0 V - - 0.1 V
IO=20µA; VCC = 4.5 V - - 0.1 V
IO=20µA; VCC = 6.0 V - - 0.1 V
IO= 6.0 mA; VCC = 4.5 V - - 0.33 V
IO= 7.8 mA; VCC = 6.0 V - - 0.33 V
ILI input leakage current VI=V
CC or GND; VCC = 6.0 V - - ±1.0 µA
IOZ 3-state OFF-state current VI=V
IH or VIL; VCC = 6.0 V;
VO=V
CC or GND --±5.0 µA
ICC quiescent supply current VI=V
CC or GND; IO=0A;
VCC = 6.0 V --80µA
Tamb =40 °C to +125 °C
VIH HIGH-level input voltage VCC = 2.0 V 1.5 - - V
VCC = 4.5 V 3.15 - - V
VCC = 6.0 V 4.2 - - V
VIL LOW-level input voltage VCC = 2.0 V - - 0.5 V
VCC = 4.5 V - - 1.35 V
VCC = 6.0 V - - 1.8 V
VOH HIGH-level output voltage VI=V
IH or VIL -
IO=20 µA; VCC = 2.0 V 1.9 - - V
IO=20 µA; VCC = 4.5 V 4.4 - - V
IO=20 µA; VCC = 6.0 V 5.9 - - V
IO=6.0 mA; VCC = 4.5 V 3.7 - - V
IO=7.8 mA; VCC = 6.0 V 5.2 - - V
Table 7: Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Typ Max Unit
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 8 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
11. Dynamic characteristics
VOL LOW-level output voltage VI=V
IH or VIL -
IO=20µA; VCC = 2.0 V - - 0.1 V
IO=20µA; VCC = 4.5 V - - 0.1 V
IO=20µA; VCC = 6.0 V - - 0.1 V
IO= 6.0 mA; VCC = 4.5 V - - 0.4 V
IO= 7.8 mA; VCC = 6.0 V - - 0.4 V
ILI input leakage current VI=V
CC or GND; VCC = 6.0 V - - ±1.0 µA
IOZ 3-state OFF-state current VI=V
IH or VIL; VCC = 6.0 V;
VO=V
CC or GND --±10.0 µA
ICC quiescent supply current VI=V
CC or GND; IO=0A;
VCC = 6.0 V - - 160 µA
Table 7: Static characteristics
…continued
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Typ Max Unit
Table 8: Dynamic characteristics
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF; R
L
= 1000
; see Figure 8.
Symbol Parameter Conditions Min Typ Max Unit
Tamb = 25 °C
tPHL, tPLH propagation delay An to Bn; Bn to An see Figure 5
VCC = 2.0 V - 22 90 ns
VCC = 4.5 V - 8 18 ns
VCC = 6.0 V - 6 15 ns
VCC = 5.0 V; CL=15pF - 6 - ns
tPZH, tPZL 3-state output enable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - 50 150 ns
VCC = 4.5 V - 18 30 ns
VCC = 6.0 V - 14 26 ns
tPHZ, tPLZ 3-state output disable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - 61 165 ns
VCC = 4.5 V - 22 33 ns
VCC = 6.0 V - 18 28 ns
tTHL, tTLH output transition time see Figure 5
VCC = 2.0 V - 14 60 ns
VCC = 4.5 V - 5 12 ns
VCC = 6.0 V - 4 10 ns
CPD power dissipation capacitance per transceiver VI= GND to VCC [1] -26- pF
Tamb = 40 °C to +85 °C
tPHL, tPLH propagation delay An to Bn; Bn to An see Figure 5
VCC = 2.0 V - - 115 ns
VCC = 4.5 V - - 23 ns
VCC = 6.0 V - - 20 ns
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 9 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
[1] CPD is used to determine the dynamic power dissipation (PD in µW).
PD=C
PD ×VCC2×fi×N+(CL×VCC2×fo) where:
fi= input frequency in MHz;
fo= output frequency in MHz;
CL= output load capacitance in pF;
VCC = supply voltage in V;
N = number of inputs switching;
(CL×VCC2×fo) = sum of outputs.
tPZH, tPZL 3-state output enable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - - 190 ns
VCC = 4.5 V - - 38 ns
VCC = 6.0 V - - 33 ns
tPHZ, tPLZ 3-state output disable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - - 205 ns
VCC = 4.5 V - - 41 ns
VCC = 6.0 V - - 35 ns
tTHL, tTLH output transition time see Figure 5
VCC = 2.0 V - - 75 ns
VCC = 4.5 V - - 15 ns
VCC = 6.0 V - - 13 ns
Tamb = 40 °C to +125 °C
tPHL, tPLH propagation delay An to Bn; Bn to An see Figure 5
VCC = 2.0 V - - 135 ns
VCC = 4.5 V - - 27 ns
VCC = 6.0 V - - 23 ns
tPZH, tPZL 3-state output enable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - - 225 ns
VCC = 4.5 V - - 45 ns
VCC = 6.0 V - - 38 ns
tPHZ, tPLZ 3-state output disable time OEA to An or Bn;
OEB to An or Bn see Figure 6 and 7
VCC = 2.0 V - - 250 ns
VCC = 4.5 V - - 50 ns
VCC = 6.0 V - - 43 ns
tTHL, tTLH output transition time see Figure 5
VCC = 2.0 V - - 90 ns
VCC = 4.5 V - - 18 ns
VCC = 6.0 V - - 15 ns
Table 8: Dynamic characteristics
…continued
GND = 0 V; t
r
=t
f
= 6 ns; C
L
= 50 pF; R
L
= 1000
; see Figure 8.
Symbol Parameter Conditions Min Typ Max Unit
., ‘ . + v ‘ AL
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 10 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
12. Waveforms
VM= 0.5 ×VI.
Fig 5. Waveforms showing the input (An and Bn) to output (Bn and An) propagation
delays and the output transition times
VM= 0.5 ×VI.
Fig 6. Waveforms showing the 3-state enable and disable times for input OEA
001aab955
An, Bn
input
Bn, An
output
VM
tPHL
tTHL tTLH
tPLH
VM
VM
OEA input
output
LOW to OFF
OFF to LOW
output
HIGH to OFF
OFF to HIGH
VM
001aab959
tf
tr
90 %
10 %
tPLZ
VM
tPZL
tPHZ tPZH
10 %
90 %
outputs
disabled outputs
enabled
outputs
enabled
+4 T
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 11 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
VM= 0.5 ×VI.
Fig 7. Waveforms showing the 3-state enable and disable times for input OEB
Test data is given in Table 9.
Definitions for test circuit:
RL = Load resistor.
CL = Load capacitance including jig and probe capacitance.
RT = Termination resistance should be equal to the output impedance Zo of the pulse
generator.
Fig 8. Load circuitry for switching times
Table 9: Test data
Supply Input Load S1
VCC VItr = tfCLRLtPZL, tPLZ tPZH, tPHZ tPHL, tPLH
2.0 V VCC 6 ns 50 pF 1 kVCC GND open
4.5 V VCC 6 ns 50 pF 1 kVCC GND open
6.0 V VCC 6 ns 50 pF 1 kVCC GND open
5.0 V VCC 6 ns 15 pF 1 kVCC GND open
VM
OEB input
output
LOW to OFF
OFF to LOW
output
HIGH to OFF
OFF to HIGH
VM
001aab956
tf
tr
90 %
10 %
tPLZ
VM
tPZL
tPHZ tPZH
10 %
90 %
outputs
disabled outputs
enabled
outputs
enabled
open
GND
VCC
VCC
VIVO
mna232
D.U.T.
CL
RT
RL =
1000
PULSE
GENERATOR
S1
i umwwuwm
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 12 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
13. Package outline
Fig 9. Package outline SOT27-1 (DIP14)
UNIT A
max. 1 2 (1) (1)
b1cD (1)
Z
Ee M
H
L
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
SOT27-1 99-12-27
03-02-13
A
min. A
max. bmax.
w
ME
e1
1.73
1.13 0.53
0.38 0.36
0.23 19.50
18.55 6.48
6.20 3.60
3.05 0.2542.54 7.62 8.25
7.80 10.0
8.3 2.24.2 0.51 3.2
0.068
0.044 0.021
0.015 0.77
0.73
0.014
0.009 0.26
0.24 0.14
0.12 0.010.1 0.3 0.32
0.31 0.39
0.33 0.0870.17 0.02 0.13
050G04 MO-001 SC-501-14
MH
c
(e )
1
ME
A
L
seating plane
A1
wM
b1
e
D
A2
Z
14
1
8
7
b
E
pin 1 index
0 5 10 mm
scale
Note
1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.
DIP14: plastic dual in-line package; 14 leads (300 mil) SOT27-1
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 13 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
Fig 10. Package outline SOT108-1 (SO14)
UNIT A
max. A1A2A3bpcD
(1) E(1) (1)
eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm
inches
1.75 0.25
0.10 1.45
1.25 0.25 0.49
0.36 0.25
0.19 8.75
8.55 4.0
3.8 1.27 6.2
5.8 0.7
0.6 0.7
0.3 8
0
o
o
0.25 0.1
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
Note
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.
1.0
0.4
SOT108-1
X
wM
θ
A
A1
A2
bp
D
HE
Lp
Q
detail X
E
Z
e
c
L
vMA
(A )
3
A
7
8
1
14
y
076E06 MS-012
pin 1 index
0.069 0.010
0.004 0.057
0.049 0.01 0.019
0.014 0.0100
0.0075 0.35
0.34 0.16
0.15 0.05
1.05
0.041
0.244
0.228 0.028
0.024 0.028
0.012
0.01
0.25
0.01 0.004
0.039
0.016
99-12-27
03-02-19
0 2.5 5 mm
scale
SO14: plastic small outline package; 14 leads; body width 3.9 mm SOT108-1
S@ W
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 14 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
Fig 11. Package outline SOT337-1 (SSOP14)
UNIT A1A2A3bpcD
(1) E(1) eH
ELL
pQZywv θ
REFERENCES
OUTLINE
VERSION EUROPEAN
PROJECTION ISSUE DATE
IEC JEDEC JEITA
mm 0.21
0.05 1.80
1.65 0.25 0.38
0.25 0.20
0.09 6.4
6.0 5.4
5.2 0.65 1.25 0.2
7.9
7.6 1.03
0.63 0.9
0.7 1.4
0.9 8
0
o
o
0.13 0.1
DIMENSIONS (mm are the original dimensions)
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
SOT337-1 99-12-27
03-02-19
(1)
wM
bp
D
HE
E
Z
e
c
vMA
X
A
y
17
14 8
θ
A
A1
A2
Lp
Q
detail X
L
(A )
3
MO-150
pin 1 index
0 2.5 5 mm
scale
SSOP14: plastic shrink small outline package; 14 leads; body width 5.3 mm SOT337-1
A
max.
2
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 15 of 17
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
14. Revision history
Table 10: Revision history
Document ID Release
date Data sheet status Change notice Doc. number Supersedes
74HC243_3 20041112 Product data sheet - 9397 750 13808 74HC_HCT243_CNV_2
Modifications: The format of this data sheet has been redesigned to comply with the current presentation
and information standard of Philips Semiconductors.
Removed type number 74HCT243.
Inserted family specification.
74HC_HCT243_CNV_2 19970828 Product specification - - 74HC_HCT243_1
74HC_HCT243_1 19901201 Product specification - - -
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
9397 750 13808 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet Rev. 03 — 12 November 2004 16 of 17
15. Data sheet status
[1] Please consult the most recently issued data sheet before initiating or completing a design.
[2] The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at
URL http://www.semiconductors.philips.com.
[3] For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.
16. Definitions
Short-form specification — The data in a short-form specification is
extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.
Limiting values definition — Limiting values given are in accordance with
the Absolute Maximum Rating System (IEC 60134). Stress above one or
more of the limiting values may cause permanent damage to the device.
These are stress ratings only and operation of the device at these or at any
other conditions above those given in the Characteristics sections of the
specification is not implied. Exposure to limiting values for extended periods
may affect device reliability.
Application information — Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
make no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.
17. Disclaimers
Life support — These products are not designed for use in life support
appliances, devices, or systems where malfunction of these products can
reasonably be expected to result in personal injury. Philips Semiconductors
customers using or selling these products for use in such applications do so
at their own risk and agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.
Right to make changes — Philips Semiconductors reserves the right to
make changes in the products - including circuits, standard cells, and/or
software - described or contained herein in order to improve design and/or
performance. When the product is in full production (status ‘Production’),
relevant changes will be communicated via a Customer Product/Process
Change Notification (CPCN). Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no
license or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products are
free from patent, copyright, or mask work right infringement, unless otherwise
specified.
18. Contact information
For additional information, please visit: http://www.semiconductors.philips.com
For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com
Level Data sheet status [1] Product status[2] [3] Definition
I Objective data Development This data sheet contains data from the objective specification for product development. Philips
Semiconductors reserves the right to change the specification in any manner without notice.
II Preliminary data Qualification This data sheet contains data from the preliminary specification. Supplementary data will be published
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in
order to improve the design and supply the best possible product.
III Product data Production This data sheet contains data from the product specification. Philips Semiconductors reserves the
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant
changes will be communicated via a Customer Product/Process Change Notification (CPCN).
© Koninklijke Philips Electronics N.V. 2004
All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may
be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under
patent- or other industrial or intellectual property rights.
Date of release: 12 November 2004
Document number: 9397 750 13808
Published in The Netherlands
Philips Semiconductors 74HC243
Quad bus transceiver; 3-state
19. Contents
1 General description . . . . . . . . . . . . . . . . . . . . . . 1
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
3 Quick reference data . . . . . . . . . . . . . . . . . . . . . 2
4 Ordering information. . . . . . . . . . . . . . . . . . . . . 2
5 Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3
6 Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
7 Functional description . . . . . . . . . . . . . . . . . . . 5
7.1 Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5
9 Recommended operating conditions. . . . . . . . 6
10 Static characteristics. . . . . . . . . . . . . . . . . . . . . 6
11 Dynamic characteristics . . . . . . . . . . . . . . . . . . 8
12 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
13 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 12
14 Revision history. . . . . . . . . . . . . . . . . . . . . . . . 15
15 Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 16
16 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
17 Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
18 Contact information . . . . . . . . . . . . . . . . . . . . 16

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