器件名称: IZ74HC21A
功能描述: Dual 4-Input AND Gate
文件大小: 38.17KB 共5页
简 介:TECHNICAL DATA
IN74HC21A
Dual 4-Input AND Gate
The IN74HC21A 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 A High Noise Immunity Characteristic of CMOS Devices
ORDERING INFORMATION IN74HC21AN Plastic IN74HC21AD SOIC IZ74HC21A Chip TA = -55° to 125° C for all packages
LOGIC DIAGRAM PIN ASSIGNMENT
A1 1 2 3 C1 D1 4 5 6 7 14 13 12 11 10 9 8 B2 A2 Y2 V CC D2 C2
A1 B1 Y1 C1
B1
A2 B2 Y2 C2 D2
A L X PIN 14 =VCC PIN 7 = GND X X H X = don’t care B X L X X H
Y1 GND
FUNCTION TABLE
Inputs X X L X H D X X X L H Output Y L L L L H
INTEGRAL
1
IN74HC21A
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 Condi……
