MC74VHC138 Series

3-to-8 Line Decoder

Catalog

3-to-8 Line Decoder

Part	Voltage - Supply [Max]	Voltage - Supply [Min]	Operating Temperature [Min]	Operating Temperature [Max]	Circuit	Voltage Supply Source	Package / Case	Package / Case [x]	Package / Case [y]	Type	Independent Circuits	Supplier Device Package	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]	Package / Case	Package / Case
ON Semiconductor MC74VHC138DR2G	5.5 V	2 V	-55 °C	125 °C	1 x 3:8	Single Supply	16-SOIC	0.154 in	3.9 mm	Decoder/Demultiplexer	1	16-SOIC	Surface Mount	8 mA	8 mA
ON Semiconductor 74VHC138MTCX	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-TSSOP	0.173 in	4.4 mm	Decoder/Demultiplexer	1	16-TSSOP	Surface Mount	8 mA	8 mA
ON Semiconductor 74VHC138N	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-DIP			Decoder/Demultiplexer	1	16-PDIP	Through Hole	8 mA	8 mA	0.3 in	7.62 mm
ON Semiconductor 74VHC138N	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-DIP			Decoder/Demultiplexer	1	16-PDIP	Through Hole	8 mA	8 mA	0.3 in	7.62 mm
ON Semiconductor 74VHC138SJX	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-SOIC			Decoder/Demultiplexer	1	16-SOP	Surface Mount	8 mA	8 mA	0.209 "	5.3 mm
ON Semiconductor 74VHC138SJ	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-SOIC			Decoder/Demultiplexer	1	16-SOP	Surface Mount	8 mA	8 mA	0.209 "	5.3 mm
ON Semiconductor MC74VHC138DR2	5.5 V	2 V	-55 °C	125 °C	1 x 3:8	Single Supply	16-SOIC	0.154 in	3.9 mm	Decoder/Demultiplexer	1	16-SOIC	Surface Mount	8 mA	8 mA
ON Semiconductor 74VHC138MX	5.5 V	2 V	-40 °C	85 °C	1 x 3:8	Single Supply	16-SOIC	0.154 in	3.9 mm	Decoder/Demultiplexer	1	16-SOIC	Surface Mount	8 mA	8 mA
ON Semiconductor MC74VHC138DTR2	5.5 V	2 V	-55 °C	125 °C	1 x 3:8	Single Supply	16-TSSOP	0.173 in	4.4 mm	Decoder/Demultiplexer	1	16-TSSOP	Surface Mount	8 mA	8 mA
ON Semiconductor MC74VHC138D	5.5 V	2 V	-55 °C	125 °C	1 x 3:8	Single Supply	16-SOIC	0.154 in	3.9 mm	Decoder/Demultiplexer	1	16-SOIC	Surface Mount	8 mA	8 mA

Catalog

3-to-8 Line Decoder

Key Features

• High Speed: tPD= 5.7ns (Typ) at VCC= 5V

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

• High Noise Immunity: VNIH= VNIL= 28% VCC

• Power Down Protection Provided on Inputs

• Balanced Propagation Delays

• Designed for 2V to 5.5V Operating Range

• Low Noise: VOLP= 0.8 V (Max)

• 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

• These devices are available in Pb-free package(s). Specifications herein apply to both standard and Pb-free devices. Please see our website at www.onsemi.com for specific Pb-free orderable part numbers, or contact your local ON Semiconductor sales office or representative.

Description

The MC74VHC138 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 internal circuit is composed of three stages, including a buffer output which provides high noise immunity and stable output. The inputs tolerate voltages up to 7V, allowing the interface of 5V systems to 3V systems.