MC54HC138AJ Freescale Semiconductor, Inc, MC54HC138AJ Datasheet
MC54HC138AJ
Manufacturer Part Number
MC54HC138AJ
Description
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC54HC138AJ.pdf
(7 pages)
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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
MOTOROLA SEMICONDUCTOR TECHNICAL DATA 1-of-8 Decoder/Demultiplexer High–Performance Silicon–Gate CMOS The MC54/74HC138A is identical in pinout to the LS138. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. The HC138A decodes a ...
Page 2
MC54/74HC138A Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î Î ...
Page 3
DC ...
Page 4
MC54/74HC138A VALID VALID INPUT A 50% t PLH OUTPUT Y 50% Figure 90% INPUT 50% 10% CS2, CS3 t PHL 90% 50% OUTPUT Y 10% t THL Figure 3. ADDRESS INPUTS A0, A1, A2 (Pins 1, 2, ...
Page 5
CS3 4 CS2 6 CS1 High–Speed CMOS Logic Data DL129 — Rev 6 EXPANDED LOGIC DIAGRAM 5 MC54/74HC138A ...
Page 6
MC54/74HC138A –A – –T – SEATING PLANE 0.25 (0.010) M –A – 0.25 (0.010) –A – ...
Page 7
K 16X REF 0.10 (0.004) 0.15 (0.006 L PIN 1 IDENT. 1 0.15 (0.006 –V– C 0.10 (0.004) –T– SEATING D PLANE Motorola reserves the right to make changes without ...