74VHC139 STMicroelectronics, 74VHC139 Datasheet

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74VHC139

Manufacturer Part Number
74VHC139
Description
DUAL 2 TO 4 DECODER/DEMULTIPLEXER
Manufacturer
STMicroelectronics
Datasheet

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DESCRIPTION
The 74VHC138 is an advanced high-speed
CMOS 3 TO 8 LINE DECODER (INVERTING)
fabricated with sub-micron silicon gate and
double-layer metal wiring C
If the device is enabled, 3 binary select inputs (A,
B and C) determine which one of the outputs will
go low. If enable input G1 is held low or either
PIN CONNECTION AND IEC LOGIC SYMBOLS
June 1999
HIGH SPEED: t
LOW POWER DISSIPATION:
I
HIGH NOISE IMMUNITY:
V
POWER DOWN PROTECTION ON INPUTS
SYMMETRICAL OUTPUT IMPEDANCE:
|I
BALANCED PROPAGATION DELAYS:
t
OPERATING VOLTAGE RANGE:
V
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 138
IMPROVED LATCH-UP IMMUNITY
CC
PLH
OH
NIH
CC
= 4 A (MAX.) at T
| = I
(OPR) = 2V to 5.5V
= V
t
PHL
OL
NIL
= 8 mA (MIN)
= 28% V
PD
=5.7 ns (TYP.) at V
CC
A
(MIN.)
= 25
2
MOS technology.
o
C
3 TO 8 LINE DECODER (INVERTING)
CC
= 5V
G2A or G2B is held high, the decoding function is
inhibited and all the 8 outputs go to high.
Three enable inputs are provided to ease
cascade connection and application of address
decoders for memory systems.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to 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.
(Micro Package)
74VHC138M
M1
ORDER CODES :
74VHC138
(TSSOP Package)
74VHC138T
T
1/8

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74VHC139 Summary of contents

Page 1

HIGH SPEED: t =5.7 ns (TYP LOW POWER DISSIPATION (MAX HIGH NOISE IMMUNITY 28% V (MIN.) NIH NIL CC POWER DOWN ...

Page 2

INPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUT S ENABL E SELECT G2B G2A ...

Page 3

ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Supply Voltage Input Voltage I DC Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 4

AC ELECTRICAL CHARACTERISTICS (Input t Symb ol Parameter V (V) t Propagation Delay 3.3 PLH t Time PHL 3 5.0 5.0 t Propagation Delay 3.3 PLH t Time 3.3 PHL 5.0 ...

Page 5

WAVEFORM 1: PROPAGATION DELAYS FOR INVERTING OUTPUTS (f=1MHz; 50% duty cycle) WAVEFORM 2: PROPAGATION DELAYS FOR NON-INVERTING OUTPUTS (f=1MHz; 50% duty cycle) 74VHC138 5/8 ...

Page 6

SO-16 MECHANICAL DATA mm DIM. MIN. TYP 0 0. 9.8 E 5.8 e 1.27 e3 8.89 F 3.8 G 4 6/8 MAX. MIN. 1.75 0.2 0.004 ...

Page 7

TSSOP16 MECHANICAL DATA mm DIM. MIN. TYP 0.05 0.10 A2 0.85 0.9 b 0.19 c 0. 6.25 6.4 E1 4.3 4.4 e 0.65 BSC 0.50 0. ...

Page 8

... STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a trademark of STMicroelectronics 1999 STMicroelectronics – ...

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