参数资料
型号: MC74HC139AN
厂商: MOTOROLA INC
元件分类: 通用总线功能
英文描述: Dual 1-of-4 Decoder/Demultiplexer
中文描述: HC/UH SERIES, OTHER DECODER/DRIVER, INVERTED OUTPUT, PDIP16
封装: PLASTIC, DIP-16
文件页数: 1/6页
文件大小: 182K
代理商: MC74HC139AN
SEMICONDUCTOR TECHNICAL DATA
1
REV 6
Motorola, Inc. 1995
10/95
High–Performance Silicon–Gate CMOS
The MC54/74HC139A is identical in pinout to the LS139. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
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.
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
μ
A
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 100 FETs or 25 Equivalent Gates
LOGIC DIAGRAM
A0a
A1a
SELECTa
A0b
A1b
1
SELECTb
Y0a
Y1a
Y2a
Y3a
Y0b
Y1b
Y2b
Y3b
ACTIVE–LOW
OUTPUTS
ADDRESS
INPUTS
PIN 16 = VCC
PIN 8 = GND
ACTIVE–LOW
OUTPUTS
3
2
ADDRESS
INPUTS
13
14
15
4
5
6
7
12
11
10
9
FUNCTION TABLE
PIN ASSIGNMENT
Inputs
A1
Outputs
Y1 Y2
Select
A0
Y0
Y3
H
L
L
L
L
X
L
L
H
H
X
L
H
L
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
H
H
H
H
H
L
X = don’t care
13
14
15
16
9
10
11
12
5
4
3
2
1
8
7
6
SELECTa
A1a
Y0a
Y1a
Y2a
A0a
GND
A1b
Y0b
A0b
SELECTb
VCC
Y3a
Y1b
Y2b
Y3b
D SUFFIX
SOIC PACKAGE
CASE 751B–05
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXAD
Ceramic
Plastic
SOIC
1
16
1
16
J SUFFIX
CERAMIC PACKAGE
CASE 620–10
1
16
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