Datasheet

ManualsBrandsFAIRCHILD SEMICONDUCTOR ManualsLogic ICsLogic IC - Demultiplexer, decoder Decoder/demultiplexer Single supply TSSOP 16

November 1992

Revised April 1999

74VHC139 Dual 2-to-4 Decoder/Demultiplexer

74VHC139

Dual 2-to-4 Decoder/Demultiplexer

General Description

The VHC139 is an advanced high speed CMOS Dual 2-to-

4 Decoder/Demultiplexer fabricated with silicon gate

CMOS technology. It achieves the high speed operation

similar to equivalent Bipolar Schottky TTL while maintain-

ing the CMOS low power dissipation.

The active LOW enable input can be used for gating or it

can be used as a data input for demultiplexing applications.

When the enable input is held HIGH, all four outputs are

fixed at a HIGH logic level independent of the other inputs.

An input protection circuit ensures that 0V to 7V can be

applied to the input pins without regard to the supply volt-

age. This device can be used to interface 5V to 3V systems

and two supply systems such as battery back up. This cir-

cuit prevents device destruction due to mismatched supply

and input voltages.

Features

■ High Speed: t

= 5.0 ns (typ) at T

= 25°C

■ Low power dissipation: I

= 4 µA (Max.) at T

= 25°C

■ High noise immunity: V

NIH

= V

NIL

= 28% V

(Min.)

■ Power down protection is provided on all inputs

■ Pin and function compatible with 74HC139

Ordering Code:

Surface mount packages are also available on Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.

Connection Diagram Pin Description

Truth Table

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Order Number Package Number Package Description

74VHC139M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow

74VHC139SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74VHC139MTC MTC16 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide

74VHC139N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide

Pin Names Description

, A

Address Inputs

Enable Inputs

–O

Outputs

Inputs Outputs

HXXHHHH

LLLLHHH

LHLHLHH

LLHHHLH

LHHHHHL

Summary of content (6 pages)

PAGE 1
Revised April 1999 74VHC139 Dual 2-to-4 Decoder/Demultiplexer General Description The VHC139 is an advanced high speed CMOS Dual 2-to4 Decoder/Demultiplexer fabricated with silicon gate CMOS technology. It achieves the high speed operation similar to equivalent Bipolar Schottky TTL while maintaining the CMOS low power dissipation. The active LOW enable input can be used for gating or it can be used as a data input for demultiplexing applications.
PAGE 2
74VHC139 Logic Symbols Functional Description The VHC139 is a high-speed dual 2-to-4 decoder/demultiplexer. The device has two independent decoders, each of which accepts two binary weighted inputs (A0–A1) and provides four mutually exclusive active-LOW outputs (O0–O3). Each decoder has an active-LOW enable (E). When E is HIGH all outputs are forced HIGH. The enable can be used as the data input for a 4-output demultiplexer application. Each half of the VHC139 generates all four minterms of two variables.
PAGE 3
Supply Voltage (VCC) −0.5V to +7.0V DC Input Voltage (VIN) −0.5V to +7.0V Recommended Operating Conditions (Note 2) 2.0V to +5.5V Supply Voltage (VCC) −0.5V to VCC + 0.5V DC Output Voltage (VOUT) 0V to +5.5V Input Voltage (VIN) Input Diode Current (IIK) −20 mA Output Voltage (VOUT) Output Diode Current (IOK) ±20 mA Operating Temperature (TOPR) DC Output Current (IOUT) ±25 mA Input Rise and Fall Time (tr, tf) DC VCC/GND Current (ICC) ±75 mA VCC = 3.3V ± 0.
PAGE 4
74VHC139 Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150” Narrow Package Number M16A 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M16D www.fairchildsemi.
PAGE 5
74VHC139 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC16 5 www.fairchildsemi.
PAGE 6
74VHC139 Dual 2-to-4 Decoder/Demultiplexer Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300” Wide Package Number N16E LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1.