MC74VHCT138A Series

3-to-8 Decoder/Demultiplexer

Catalog

3-to-8 Decoder/Demultiplexer

Part	Mounting Type	Circuit	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Voltage Supply Source	Supplier Device Package	Operating Temperature [Min]	Operating Temperature [Max]	Package / Case [x]	Package / Case	Package / Case [y]	Independent Circuits	Type	Package / Case	Package / Case
ON Semiconductor MC74VHCT138ADTR2	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-TSSOP	-55 °C	125 °C	0.173 in	16-TSSOP	4.4 mm	1	Decoder/Demultiplexer
ON Semiconductor MC74VHCT138ADR2G	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-SOIC	-55 °C	125 °C	0.154 in	16-SOIC	3.9 mm	1	Decoder/Demultiplexer
ON Semiconductor 74VHCT138AMTC	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-TSSOP	-40 °C	85 °C	0.173 in	16-TSSOP	4.4 mm	1	Decoder/Demultiplexer
ON Semiconductor 74VHCT138ASJX	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-SOP	-40 °C	85 °C		16-SOIC		1	Decoder/Demultiplexer	0.209 "	5.3 mm
ON Semiconductor MC74VHCT138ADTRG	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-TSSOP	-55 °C	125 °C	0.173 in	16-TSSOP	4.4 mm	1	Decoder/Demultiplexer
ON Semiconductor 74VHCT138ASJX	Surface Mount	1 x 3:8	8 mA	8 mA	4.5 V	5.5 V	Single Supply	16-SOP	-40 °C	85 °C		16-SOIC		1	Decoder/Demultiplexer	0.209 "	5.3 mm

Catalog

3-to-8 Decoder/Demultiplexer

Key Features

• High Speed: tPD= 7.6ns (Typ) at VCC= 5V

• Low Power Dissipation: ICC= 4mA (Max) at TA= 25°C

• TTL-Compatible Inputs: VIL= 0.8V; VIH= 2.0V

• Power Down Protection Provided on Inputs and Outputs

• Balanced Propagation Delays

• Designed for 4.5V to 5.5V Operating Range

• Pin and Function Compatible with Other Standard Logic Families

• Latchup Performance Exceeds 300mA

• ESD Performance: HBM > 2000V; Machine Model > 200V

• Chip Complexity: 122 FETs or 30.5 Equivalent Gates

• Pb-Free Packages are Available*

Description

The MC74VHCT138A is an advanced high speed CMOS 3-to-8 decoder fabricated with silicon gate CMOS technology. It achieves high speed operation similar to equivalent Bipolar Schottky TTL while maintaining CMOS low power dissipation.When the device is enabled, three Binary Select inputs (A0 - A2) determine which one of the outputs (Y0 - Y7) will go Low. When enable input E3 is held Low or either E2bar or E1bar is held High, decoding function is inhibited and all outputs go high. E3, E2bar, and E1bar inputs are provided to ease cascade connection and for use as an address decoder for memory systems.The VHCT inputs are compatible with TTL levels. This device can be used as a level converter for interfacing 3.3V to 5.0V, because they have full 5V CMOS level output swings.The VHCT138A input structures provide protection when voltages between 0V and 5.5V are applied, regardless of the supply voltage. The output structures also provide protection when VCC= 0V. These input and output structures help prevent device destruction caused by supply voltage - input/output voltage mismatch, battery backup, hot insertion, etc.