CD54HC27, CD74HC27,
CD54HCT27, CD74HCT27
Data sheet acquired from Harris Semiconductor
SCHS132C
August 1997 - Revised September 2003
High-Speed CMOS Logic
Triple 3-Input NOR Gate
Description
The 鈥橦C27 and 鈥橦CT27 logic gates utilize silicon gate CMOS
technology to achieve operating speeds similar to LSTTL
gates with the low power consumption of standard CMOS
integrated circuits. All devices have the ability to drive 10
LSTTL loads. The HCT logic family is functionally pin
compatible with the standard LS logic family.
Features
鈥?Buffered Inputs
[ /Title
(CD74
HC27,
CD74
HCT27
)
/Sub-
ject
(High
Speed
CMOS
Logic
鈥?Typical Propagation Delay: 7ns at V
CC
= 5V,
C
L
= 15pF, T
A
= 25
o
C
鈥?Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
鈥?Wide Operating Temperature Range . . . -55
o
C to 125
o
C
鈥?Balanced Propagation Delay and Transition Times
鈥?Signi鏗乧ant Power Reduction Compared to LSTTL
Logic ICs
鈥?HC Types
- 2V to 6V Operation
- High Noise Immunity: N
IL
= 30%, N
IH
= 30% of V
CC
at V
CC
= 5V
鈥?HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
V
IL
= 0.8V (Max), V
IH
= 2V (Min)
- CMOS Input Compatibility, I
l
鈮?/div>
1碌A(chǔ) at V
OL
, V
OH
Ordering Information
PART NUMBER
CD54HC27F3A
CD54HCT27F3A
CD74HC27E
CD74HC27M
CD74HC27MT
CD74HC27M96
CD74HCT27E
CD74HCT27M
CD74HCT27MT
CD74HCT27M96
TEMP. RANGE
(
o
C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
PACKAGE
14 Ld CERDIP
14 Ld CERDIP
14 Ld PDIP
14 Ld SOIC
14 Ld SOIC
14 Ld SOIC
14 Ld PDIP
14 Ld SOIC
14 Ld SOIC
14 Ld SOIC
NOTE: When ordering, use the entire part number. The suf鏗亁 96
denotes tape and reel. The suf鏗亁 T denotes a small-quantity reel
of 250.
Pinout
CD54HC27, CD54HCT27
(CERDIP)
CD74HC27, CD74HCT27
(PDIP, SOIC)
TOP VIEW
1A 1
1B 2
2A 3
2B 4
2C 5
2Y 6
GND 7
14 V
CC
13 1C
12 1Y
11 3C
10 3B
9 3A
8 3Y
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
漏
2003, Texas Instruments Incorporated
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