SLS SL74HCT139D, SL74HCT139N Datasheet

SL74HCT139

Semiconductor

Dual 1-of-4 Decoder/Demultiplexer

High-Performance Silicon-Gate CMOS

The SL74HCT139A is identical in pinout to the LS/ALS139. The
SL74HCT139A may be used as a level converter for interfacing TTL or
NMOS outputs to High Speed CMOS inputs.

This device consists of two independent 1-of-4 decoders, each of
which decodes a two -bit Address to one-of-four active-low outputs.
Active-low Selects are provided to facilitate the demultiplexing and
cascading functions. The demultiplexing function is accomplished by
using the Address inputs to select the desired device output, and
utilizing the Select as a data input.

• TTL/NMOS Compatible Input Levels

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 4.5 to 5.5 V

• Low Input Current: 1.0 µA

TA = -55° to 125° C for all packages

ORDERING INFORMATION

SL74HCT139N Plastic

SL74HCT139D SOIC

LOGIC DIAGRAM

PIN 16 =VCC

PIN 8 = GND

PIN ASSIGNMENT

FUNCTION TABLE

Inputs Outputs

Select A1 A0 Y0 Y1 Y2 Y3

H X X H H H H

L L L L H H H
L L H H L H H
L H L H H L H
L H H H H H L

X = don’t care

System Logic

SLS

SL74HCT139

Semiconductor

MAXIMUM RATINGS*

Symbol Parameter Value Unit

VCC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
VIN DC Input Voltage (Referenced to GND) -1.5 to VCC +1.5 V

V

DC Output Voltage (Referenced to GND) -0.5 to VCC +0.5 V

OUT

IIN DC Input Current, per Pin ±20 mA

I

DC Output Current, per Pin ±25 mA

OUT

ICC DC Supply Current, VCC and GND Pins ±50 mA
PD Power Dissipation in Still Air, Plastic DIP+

SOIC Package+

750
500

Tstg Storage Temperature -65 to +150 °C

TL Lead Temperature, 1 mm from Case for 10 Seconds

260 °C

(Plastic DIP or SOIC Package)

*

Maximum Ratings are those values beyond which damage to the device may occur.

Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C

SOIC Package: : - 7 mW/°C from 65° to 125°C

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Max Unit

VCC DC Supply Voltage (Referenced to GND) 4.5 5.5 V

VIN, V

DC Input Voltage, Output Voltage (Referenced to GND) 0 VCC V

OUT

TA Operating Temperature, All Package Types -55 +125 °C

tr, tf Input Rise and Fall Time (Figure 1) 0 500 ns

mW

This device contains protection circuitr y to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and V
GND≤(VIN or V

OUT

)≤VCC.

should be constrained to the range

OUT

Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.

System Logic

SLS