1 Features

? AEC-Q100 qualified for automotive applications:

– Device temperature grade 1: -40°C to +125°C

– Device HBM ESD classification level 2

– Device CDM ESD classification level C4B

? Available in wettable flank QFN package

? Wide operating range of 1.5V to 6V

? Inputs accept voltages up to 6V

? Continuous ±24mA output drive at 5V

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

in short bursts

? Drives 50Ω transmission lines

? Maximum tpd of 10.2ns at 5V, 50pF load

2 Applications

? Memory device selection with shared data bus

? Reduce required number of outputs for chip select

applications

? Route data

3 Description

The SN74AC138-Q1 contains a three to eight

decoder with one standard output strobe (G2) and two

active low output strobes (G 1 and G 0). When the

outputs are gated by any of the strobe inputs, they are

all forced into the high state. When the outputs are not

disabled by the strobe inputs, only the selected output

is low while all others are high.