SN54HC20-SP中文资料德州仪器数据手册PDF规格书

1 Features

• Buffered inputs

• Wide operating voltage range: 2 V to 6 V

• Wide operating temperature range:

–40°C to +85°C

• Supports fanout up to 10 LSTTL loads

• Significant power reduction compared to LSTTL

logic ICs

2 Applications

• Alarm / tamper detect circuit

• S-R latch

3 Description

This device contains two independent 4-input NAND

gates. Each gate performs the Boolean function

Y = A ● B ● C ● D in positive logic.