CD74HC02,
[ /Title
(CD74H
C02,
CD74H
CT02)
Subject
(High
Speed
CMOS
Logic
Quad
Two-
Data sheet acquired from Harris Semiconductor
SCHS125
March 1998
Features
• Buffered Inputs
• Typical Propagation Delay: 7ns at V
C
= 15pF, TA = 25oC
L
• Fanout (Over Temperature Range)
- Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: N
= 30%, NIH = 30% of V
IL
CC
= 5V,
o
C to 125oC
CC
CD74HCT02
High Speed CMOS Logic
Quad Two-Input NOR Gate
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
= 0.8V (Max), VIH = 2V (Min)
IL
- CMOS Input Compatibility, I
• Related Literature
- CD54HC02F3A and CD54HCT02F3A Military
Data Sheet, Document Number 3754
Description
The Harris CD74HC02, CH74HCT02 logic gates utilize
silicon-gate CMOS technology to achieve operating speeds
similar to LSTTL gates with the low power consumption of
standard CMOSintegrated circuits.All deviceshave theability
to drive 10 LSTTL loads. The 74HCT logic family is
≤ 1µA at VOL, V
l
OH
Pinout
CD74HC02, CD74HCT02
(PDIP, SOIC)
TOP VIEW
1Y
1
2
1A
1B
3
2Y
4
2A
5
2B
6
GND
7
V
14
CC
4Y
13
4B
12
4A
11
3Y
10
3B
9
3A
8
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
© Harris Corporation 1998
1
File Number 1647.1
Functional Diagram
CD74HC02, CD74HCT02
1Y
1A
1B
2Y
2A
2B
GND
1
2
3
4
5
6
7
14
V
CC
13
4Y
12
4B
11
4A
10
3Y
9
3B
8
3A
TRUTH TABLE
INPUTS OUTPUT
nA nB nY
LLH
LHL
HLL
HHL
Logic Diagram
NOTE: H = High Voltage Level, L = Low Voltage Level
nA
nB
2