SGS Thomson Microelectronics 74VHCT139A Datasheet



DUAL 2 TO 4 DECODER/DEMULTIPLEXER

■ HIGHSPEED:t

■ LOW POWER DISSIPATION:

=4 µA (MAX.) at TA=25oC

I

CC

■ COMPATIBLEWITHTTLOUTPUTS:

=2V(MIN),VIL=0.8V(MAX)

V

IH

■ POWERDOWNPROTECTIONON INPUTS&

OUTPUTS

■ SYMMETRICALOUTPUTIMPEDANCE:

|I

|=IOL=8 mA(MIN)

OH

■ BALANCEDPROPAGATIONDELAYS:

t

≅ t

PLH

PHL

■ OPERATINGVOLTAGERANGE:

(OPR)= 4.5V to 5.5V

V

CC

■ PINANDFUNCTIONCOMPATIBLEWITH

74SERIES139

■ IMPROVEDLATCH-UPIMMUNITY

DESCRIPTION

The 74VHCT139A is an advanced high-speed
CMOS DUAL 2 TO 4 LINE DECODER/
DEMULTIPLEXER fabricated with sub-micron
silicon gate and double-layermetal wiring C
technology.

The active low enable input can be used for

=7.2ns (TYP.)at VCC=5V

PD

2

MOS

74VHCT139A

PRELIMINARY DATA

SOP TSSOP

ORDER CODES

PACKAGE TUBE T & R

SOP 74VHCT139AM 74VHCT139AMTR

TSSOP 74VHCT139ATTR

gating or as a data input for demultiplexing
applications. While the enable input is held high,
all four outputs are high independently of the
other inputs.

Power down protection is provided on all inputs
and outputs and 0 to 7V can be accepted on
inputs with no regard to the supply voltage. This
devicecan be usedto interface 5V to 3V.

All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.

PIN CONNECTION AND IEC LOGIC SYMBOLS

March 2000

1/8

74VHCT139A

INPUT EQUIVALENTCIRCUIT

PIN DESCRIPTION

PI N No SYM BO L NAM E AND FUNCT I O N

1, 15 1G, 2G Enable Inputs

2, 3 1A, 1B Address Inputs

4, 5, 6, 7 1Y0 to 1Y3 Outputs

12, 11, 10,92Y0 to 2Y3 Outputs

14, 13 2A, 2B Address Inputs

8 GND Ground (0V)

16 V

CC

Positive Supply Voltage

TRUTH TABLE

INPUTS OUTPUTS

ENABLE SELECT

G B A Y0Y1Y2Y3

HXXHHHH

LLLLHHH
LLHHLHH
LHLHHLH

X:Don’tCare

LHHHHHL

LOGICDIAGRAM

Thislogic diagram has notbe used to estimate propagation delays

2/8

74VHCT139A

ABSOLUTE MAXIMUM RATINGS

Symb o l Para met er Value U n i t

V

V
V
V

I

I

OK

I

or I

I

CC

T

T

AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamage tothedevicemayoccur. Functionaloperationunderthese condition isnotimplied.

1)V

=0

CC

2)HighorLowState

RECOMMENDEDOPERATINGCONDITIONS

Symb o l Para met er Value Unit

V

V
V
V

T

dt/dv

1)VCC=0

2)HighorLowState
from0.8Vto 2V

3)V

IN

Supply Voltage -0.5 to +7.0 V

CC

DC Input Voltage -0.5 to +7.0 V

I

DC Output Voltage (see note 1) -0.5 to +7.0 V

O

DC Output Voltage (see note 2) -0.5 to VCC+ 0.5 V

O

DC Input Diode Current - 20 mA

IK

DC Output Diode Current
DC Output Current

O

DC VCCor Ground Current ± 50 mA

GND

Storage Temperature -65 to +150

stg

Lead Temperature (10 sec) 300

L

Supply Voltage 4.5 to 5.5 V

CC

Input Voltage 0 to 5.5 V

I

Output Voltage (see note 1) 0 to 5.5 V

O

Output Voltage (see note 2) 0 to V

O

Operating Temperature -40 to +85

op

Input Rise and Fall Time (see note 3) (V

=5.0±0.5V)

CC

20 mA

±

25 mA

±

CC

0 to 20 ns/V

o

C

o

C

V

o

C

DC SPECIFICATIONS

Symb o l P ara met er Test C o n di ti o ns Val u e Uni t

T

=25oC -40 to 85oC

A

1.35 1.5 mA

µ

V

V

V

V

I

∆I

I

OPD

V

CC

High Level Input

IH

(V)

4.5 to 5.5 2 2 V

Min. Typ. Max. Min. Max.

Voltage
Low Level Input

IL

4.5 to 5.5 0.8 0.8 V

Voltage
High Level Output

OH

Voltage
Low Level Output

OL

Voltage
Input Leakage Current 0 to 5.5 VI= 5.5V or GND ±0.1 ±1.0 µA

I

I

Quiescent Supply

CC

4.5 IO=-50 µA 4.4 4.5 4.4

4.5 I

=-8 mA 3.94 3.8

O

4.5 IO=50 µ A 0.0 0.1 0.1

4.5 I

=8 mA 0.36 0.44

O

5.5 VI=VCCorGND 4 40

Current
Additional Worst Case

CC

Supply Current

5.5 One Input at 3.4V,
other input at V

CC

or

GND

Output Leakage

0V

= 5.5V 0.5 5.0 µA

OUT

Current

V

V

A

3/8