74ACT20 Datasheet PDF | STMicroelectronics

STMicroelectronics 74ACT20

The 74ACT20 is an advanced high-speed CMOS DUAL 4-INPUT NAND GATE fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS tecnology. The internal circuit is composed of 3 stages including buffer output, which enables high noise immunity and stable output. The device is designed to interface directly High Speed CMOS systems with TTL, NMOS and CMOS output voltage levels.

Part No.	74ACT20
Datasheet	74ACT20 Download
Manufacturer	STMicroelectronics
Description	DUAL 4-INPUT NAND GATE
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DESCRIPTION

All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage. PIN CONNECTION AND IEC LOGIC SYMBOLS April 2001 1/8 74ACT20 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN

DESCRIPTION

PIN No 1, 9 2, 10 3, 11 5, 13 6, 8 7 14 SYMBOL 1A to 2A 1B to 2B 1C to 2C 1C to 2D 1Y to 2Y GND VCC NAME AND FUNCTION Data Inputs Data Inputs Data Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage TRUTH TABLE A L X X X H X : Don’t Care B X L X X H C X X L X H D X X X L H Y H H H H L

ABSOLUTE MAXIMUM RATINGS

Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter² Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 ± 20 ± 20 ± 50 ± 100 -65 to +150 300 Unit V V V mA mA mA mA °C °C ICC or IGND DC VCC or Ground Current Tstg Storage Temperature TL Lead Temperature (10 sec)

ABSOLUTE MAXIMUM RATINGS

are those values beyond which damage to the device may occur.