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CD74HC27 Datasheet Preview

CD74HC27 Datasheet

Triple 3-Input NOR Gate

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Data sheet acquired from Harris Semiconductor
SCHS132C
August 1997 - Revised September 2003
CD54HC27, CD74HC27,
CD54HCT27, CD74HCT27
High-Speed CMOS Logic
Triple 3-Input NOR Gate
[ /Title
(CD74
HC27,
CD74
HCT27
)
/Sub-
ject
(High
Speed
CMOS
Logic
Features
Description
• Buffered Inputs
Typical Propagation Delay:
CL = 15pF, TA = 25oC
7ns
at
VCC
=
5V,
• Fanout (Over Temperature Range)
- Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads
- Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL
Logic ICs
• HC Types
- 2V to 6V Operation
- High Noise Immunity: NIL = 30%, NIH = 30% of VCC
at VCC = 5V
• HCT Types
- 4.5V to 5.5V Operation
- Direct LSTTL Input Logic Compatibility,
VIL= 0.8V (Max), VIH = 2V (Min)
- CMOS Input Compatibility, Il 1µA at VOL, VOH
The ’HC27 and ’HCT27 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.
Ordering Information
PART NUMBER
CD54HC27F3A
CD54HCT27F3A
CD74HC27E
CD74HC27M
CD74HC27MT
CD74HC27M96
CD74HCT27E
CD74HCT27M
CD74HCT27MT
TEMP. RANGE
(oC)
PACKAGE
-55 to 125
14 Ld CERDIP
-55 to 125
14 Ld CERDIP
-55 to 125
14 Ld PDIP
-55 to 125
14 Ld SOIC
-55 to 125
14 Ld SOIC
-55 to 125
14 Ld SOIC
-55 to 125
14 Ld PDIP
-55 to 125
14 Ld SOIC
-55 to 125
14 Ld SOIC
CD74HCT27M96
-55 to 125
14 Ld SOIC
NOTE: When ordering, use the entire part number. The suffix 96
denotes tape and reel. The suffix 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 VCC
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 © 2003, Texas Instruments Incorporated
1




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CD74HC27 Datasheet Preview

CD74HC27 Datasheet

Triple 3-Input NOR Gate

No Preview Available !

CD54HC27, CD74HC27, CD54HCT27, CD74HCT27
Functional Diagram
1
1A
2
1B
3
2A
4
2B
5
2C
6
2Y
7
GND
14
VCC
13
1C
12
1Y
11
3C
10
3B
9
3A
8
3Y
Logic Symbol
TRUTH TABLE
INPUTS
OUTPUT
nA nB nC nY
L L LH
L LHL
LHL L
HL L L
HHL L
L HH L
HLHL
HHH L
H = High Voltage Level, L = Low Voltage Level
nA
nB nY
nC
2


Part Number CD74HC27
Description Triple 3-Input NOR Gate
Maker etcTI
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CD74HC27 Datasheet PDF






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