SN74AHCT139-Q1_V01中文资料德州仪器数据手册PDF规格书

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

• Operating range 4.5V to 5.5V VCC

• TTL-Compatible inputs

• Low delay, 9.6ns max (VCC = 5V, CL = 50pF

• Latch-up performance exceeds 250mA

per JESD 17

2 Applications

• Drive an indicator LED

• Level-shift using open-drain outputs

• Control a relay

3 Description

The SN74AHCT139-Q1 contains two 2-line to 4-line

decoders/demultiplexers. These devices are designed

to be used in high-performance memory-decoding

or data-routing applications requiring very short

propagation delay times. In high-performance memory

systems, these decoders can be used to minimize

the effects of system decoding. When used with highspeed

memories utilizing a fast enable circuit, the

delay times of these decoders and the enable time

of the memory usually are less than the typical access

time of the memory. This means that the effective

system delay introduced by the decoders is negligible.