74VHCT20A Datasheet PDF | STMicroelectronics

STMicroelectronics 74VHCT20A

The 74VHCT20A is an advanced high-speed CMOS DUAL 4-INPUT NAND GATE fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. The internal circuit is composed of 3 stages including buffer output, which provide high noise immunity and stable output. This device can be used to interface 5V to 3V.

Part No.	74VHCT20A
Datasheet	74VHCT20A Download
Manufacturer	STMicroelectronics
Description	DUAL 4-INPUT NAND GATE
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DESCRIPTION

Power down protection is provided on all inputs and outputs and 0 to 7V can be accepted on inputs with no regard to the supply voltage. This device can be used to interface 5V to 3V. 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 February 2000 1/7 74VHCT20A INPUT EQUIVALENT CIRCUIT PIN

DESCRIPTION

PIN No 1, 9 2, 10 3, 11 4, 12 5, 13 6, 8 7 14 SYMBOL 1A to 2A 1B to 2B N.C. 1C to 2C 1D to 2D 1Y to 2Y GND VCC NAME AND FUNCT ION Data Inputs Data Inputs Not Connected Data Inputs Data Inputs Data Outputs Ground (0V) Positive Supply Voltage TRUTH TABLE A L X X X H X: ”H” or ”L” 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 VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage (see note 1) DC Output Voltage (see note 2) DC Input Diode Current DC Output Diode Current DC Output Current Sto...