INTEGRAL IN74HC27AN, IN74HC27AD, IN74HC27A Datasheet
Triple 3-Input NOR Gate
The IN74HC27A is high-speed Si-gate CMOS device and are pin
compatible with low power Schottky TTL (LSTTL) . The device
provide Triple 3-input NOR function.
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 2.0 to 6.0 V
• Low Input Current: 1.0 µA
• High Noise Immunity Characteristic of CMOS Devices
LOGIC DIAGRAM
TECHNICAL DATA
IN74HC27A
ORDERING INFORMATION
IN74HC27AN Plastic
IN74HC27AD SOIC
IZ74HC27A Chip
T
= -55° to 125° C for all packages
A
A1
B1
C1
A2
B2
C2
A3
B3
C3
PIN 14 =V
PIN 7 = GND
CC
Y1
Y2
Y3
PIN ASSIGNMENT
A1
B1
A2
B2
C2
Y2
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
V
CC
C1
Y1
C3
B3
A3
Y3
FUNCTION TABLE
Inputs Output
ABC
LLL H
XXH L
XHX L
HXX L
CBAY ++=
INTEGRAL
X = don’t care
1
IN74HC27A
MAXIMUM RATINGS
*
Symbol Parameter Value Unit
V
CC
V
V
OUT
I
IN
I
OUT
I
CC
P
DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
DC Input Voltage (Referenced to GND) -1.5 to VCC +1.5 V
IN
DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V
DC Input Current, per Pin
DC Output Current, per Pin
DC Supply Current, VCC and GND Pins
Power Dissipation in Still Air, Plastic DIP**
D
SOIC Package**
±20
±25
±50
750
500
Tstg Storage Temperature -65 to +150
T
Lead Temperature, 1 mm from Case for 10 Seconds
L
260
(Plastic DIP or SOIC Package)
*Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
**Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C
SOIC Package: : - 7 mW/°C from 65° to 125°C
mA
mA
mA
mW
°C
°C
RECOMMENDED OPERATING CONDITIONS
Symbol Parameter Min Max Unit
V
CC
VIN, V
OUT
T
A
tr, t
f
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages
to this high-impedance circuit. For proper operation, V
)≤V
V
OUT
CC
Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V
outputs must be left open.
DC Supply Voltage (Referenced to GND) 2.0 6.0 V
DC Input Voltage, Output Voltage (Referenced to GND) 0 V
Operating Temperature, All Package Types -55 +125
Input Rise and Fall Time (Figure 1) VCC =2.0 V
V
=4.5 V
CC
V
=6.0 V
CC
and V
IN
should be constrained to the range GND≤(V
OUT
0
1000
0
0
.
CC
500
400
V
°C
ns
). Unused
CC
or
IN
INTEGRAL
2
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