SN74ACT238-Q1中文资料德州仪器数据手册PDF规格书

1 Features

• Operating voltage range of 4.5V to 5.5V

• TTL-compatible inputs

• Continuous ±24mA output drive at 5V

• Supports up to ±75mA output drive at 5V

in short bursts

• Drives 50Ω transmission lines

• Fast operation with delay of 10.9ns max

2 Applications

• Memory device selection with shared data bus

• Reduce required number of outputs for chip select

applications

• Route data

3 Description

The SN74ACT238 is a three to eight decoder with one

standard output strobe (G2) and two active low output

strobes (G 1 and G 0). When the channel strobe inputs

are all active, only the selected output is high while all

others are low. When any strobe input is inactive, the

outputs are all forced into the low state.