MC54HC138AJ Motorola, MC54HC138AJ Datasheet

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MC54HC138AJ

Manufacturer Part Number
MC54HC138AJ
Description
1-of-8 decoder, demultiplexer
Manufacturer
Motorola
Datasheet

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MC54HC138AJ
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MC54HC138AJ
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1-of-8 Decoder/Demultiplexer
High–Performance Silicon–Gate CMOS
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
outputs. This device features three Chip Select inputs, two active–low and
one active–high to facilitate the demultiplexing, cascading, and chip–select-
ing functions. The demultiplexing function is accomplished by using the
Address inputs to select the desired device output; one of the Chip Selects is
used as a data input while the other Chip Selects are held in their active
states.
10/95
SELECT
ADDRESS
INPUTS
CHIP–
Motorola, Inc. 1995
INPUTS
The MC54/74HC138A is identical in pinout to the LS138. The device
The HC138A decodes a three–bit Address to one–of–eight active–low
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0 A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 100 FETs or 29 Equivalent Gates
CS1CS2 CS3 A2 A1 A0 Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7
H = high level (steady state); L = low level (steady state);
X = don’t care
H
H
H
H
H
H
H
H
CS1
CS2
CS3
X
X
L
A0
A1
A2
X
H
X
L
L
L
L
L
L
L
L
1
2
3
6
4
5
H
X
X
Inputs
L
L
L
L
L
L
L
L
X
X
X
H
H
H
H
L
L
L
L
LOGIC DIAGRAM
FUNCTION TABLE
X
X
X
H
H
H
H
L
L
L
L
H
H
H
H
X
X
X
L
L
L
L
H
H
H
H
H
H
H
H
H
H
L
PIN 16 = V CC
PIN 8 = GND
H
H
H
H
H
H
H
H
H
H
L
15
14
13
12
10
11
9
7
H
H
H
H
H
H
H
H
H
H
L
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Outputs
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
ACTIVE–LOW
OUTPUTS
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
L
1
H
H
H
H
H
H
H
H
H
H
L
REV 6
MC54/74HC138A
16
16
16
16
1
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXAD
MC74HCXXXADT
1
ORDERING INFORMATION
GND
1
CS2
CS3
CS1
1
A0
A1
A2
Y7
PIN ASSIGNMENT
1
2
3
4
5
6
7
8
CERAMIC PACKAGE
PLASTIC PACKAGE
TSSOP PACKAGE
SOIC PACKAGE
CASE 751B–05
CASE 948F–01
16
15
14
13
12
10
CASE 620–10
CASE 648–08
11
9
DT SUFFIX
N SUFFIX
D SUFFIX
J SUFFIX
Ceramic
Plastic
SOIC
TSSOP
V CC
Y0
Y1
Y2
Y3
Y4
Y5
Y6

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MC54HC138AJ Summary of contents

Page 1

... ADDRESS 2 A1 INPUTS CS1 CHIP– PIN SELECT CS2 PIN 8 = GND INPUTS 5 CS3 FUNCTION TABLE Inputs CS1CS2 CS3 high level (steady state low level (steady state don’t care 10/95 Motorola, Inc. 1995 ACTIVE–LOW Y3 11 OUTPUTS Outputs MC54/74HC138A J SUFFIX CERAMIC PACKAGE 16 CASE 620– ...

Page 2

... For high frequency or heavy load considerations, see Chapter 2 of the Motorola High–Speed CMOS Data Book (DL129/D). Î Î Î Î Î Î Î Î ...

Page 3

... NOTE: For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the Motorola High– Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...

Page 4

... CONTROL INPUTS CS1, CS2, CS3 (Pins Chip select inputs. For CS1 at a high level and CS2, CS3 at a low level, the chip is selected and the outputs follow the MOTOROLA SWITCHING WAVEFORMS V CC INPUT CS1 GND ...

Page 5

... CS3 4 CS2 6 CS1 High–Speed CMOS Logic Data DL129 — Rev 6 EXPANDED LOGIC DIAGRAM 5 MC54/74HC138A MOTOROLA ...

Page 6

... 0.25 (0.010) M –A – 0.25 (0.010) –A – –T – SEATING PLANE 0.25 (0.010 MOTOROLA OUTLINE DIMENSIONS J SUFFIX CERAMIC PACKAGE CASE 620–10 ISSUE V –B – 0.25 (0.010 SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE SEATING –T PLANE – SUFFIX PLASTIC SOIC PACKAGE CASE 751B– ...

Page 7

... Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “ ...

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