Dual 4-Input AND Gate - KODENSHI KOREA
Description
TECHNICAL DATA
KK74HC21A
Dual 4-Input AND Gate
The KK74HC21A is high-speed Si-gate CMOS device and is pin compatible with pullup resistors with low power Schottky TTL (LSTTL).
The device provide the Dual 4-input AND 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
ORDERING INFORMATION KK74HC21AN Plastic KK74HC21AD SOIC TA = -55° to 125° C for all packages
LOGIC DIAGRAM PIN ASSIGNMENT
A1
B1 Y1
A1 B1
C1 D1
1 2 3 4 5 6 7
14 13 12 11 10 9 8
V CC
D2 C2
C1
B2 A2 Y2
A2 B2 Y2 C2 D2
Y1 GND
FUNCTION TABLE
Inputs
A
L
X
X
X
H
X = don’t care
Output
С
X
X
L
X
H
B
X
L
X
X
H
D
X
X
X
L
H
Y
L
L
L
L
H
PIN 14 =VCC PIN 7 = GND
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KK74HC21A
MAXIMUM RATINGS*
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP** SOIC Package** Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package) Value -0.
5 to +7.
0 -1.
5 to VCC +1.
5 -0.
5 to VCC +0.
5 ±20 ±25 ±50 750 500 -65 to +150 260 Unit V V V mA mA mA mW °C °C
*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
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VIN, VOUT TA tr, tf Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Operating Temperature, All Package Types Input Rise and Fall Time (Figure 1) VCC =2.
0 V VCC =4.
5 V VCC =6.
0 V Min 2.
0 0 -55 0 0 0 Max 6.
0 VCC +125 1000 500 400 Unit V V °C ns
This device contains protection circuitry to...
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