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What is MC74HC42?

This electronic component, produced by the manufacturer "Motorola Semiconductors", performs the same function as "1-of-10 Decoder".


MC74HC42 Datasheet PDF - Motorola Semiconductors

Part Number MC74HC42
Description 1-of-10 Decoder
Manufacturers Motorola Semiconductors 
Logo Motorola Semiconductors Logo 


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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
1-of-10 Decoder
High–Performance Silicon–Gate CMOS
The MC74HC42 is identical in pinout to the LS42. The device inputs are
compatible with standard CMOS outputs; with pullup resistors, they are
compatible with LSTTL outputs.
The HC42 decodes a BCD Address to one–of–ten active low outputs. For
Address inputs with a hexadecimal equivalent greater than 9, all outputs,
Y0 – Y9, remain high (inactive).
Output Drive Capability: 10 LSTTL Loads
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2 to 6 V
Low Input Current: 1 µA
High Noise Immunity Characteristic of CMOS Devices
In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
Chip Complexity: 104 FETs or 26 Equivalent Gates
LOGIC DIAGRAM
15
A0
(LSB)
BCD
ADDRESS
INPUTS
14
A1
13
A2
12
A3
(MSB)
PIN 16 = VCC
PIN 8 = GND
1
Y0
2
Y1
3
Y2
4
Y3
5
Y4
6
Y5
7
Y6
9
Y7
10
Y8
11
Y9
ACTIVE LOW
OUTPUTS
MC74HC42
16
1
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
16
1
D SUFFIX
SOIC PACKAGE
CASE 751B–05
ORDERING INFORMATION
MC74HCXXN
MC74HCXXD
Plastic
SOIC
PIN ASSIGNMENT
Y0 1
Y1 2
Y2 3
Y3 4
Y4 5
Y5 6
Y6 7
GND 8
16 VCC
15 A0
14 A1
13 A2
12 A3
11 Y9
10 Y8
9 Y7
10/95
© Motorola, Inc. 1995
1 REV 6

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MC74HC42 equivalent
–A
16
1
H
G
OUTLINE DIMENSIONS
9
B
8
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
ISSUE R
FC
S
–T
SEATING
PLANE
K
J
D 16 PL
0.25 (0.010) M T A M
L
M
MC74HC42
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEADS WHEN
FORMED PARALLEL.
4. DIMENSION B DOES NOT INCLUDE MOLD FLASH.
5. ROUNDED CORNERS OPTIONAL.
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 0.740 0.770 18.80 19.55
B 0.250 0.270 6.35 6.85
C 0.145 0.175 3.69 4.44
D 0.015 0.021 0.39 0.53
F 0.040 0.070 1.02 1.77
G
0.100 BSC
2.54 BSC
H
0.050 BSC
1.27 BSC
J 0.008 0.015 0.21 0.38
K 0.110 0.130 2.80 3.30
L 0.295 0.305 7.50 7.74
M
0° 10°
0° 10°
S 0.020 0.040 0.51 1.01
–A
16
1
D SUFFIX
PLASTIC SOIC PACKAGE
CASE 751B–05
ISSUE J
9
–B
8
P 8 PL
0.25 (0.010) M
BM
–T
SEATING
PLANE
G
K
C
D 16 PL
0.25 (0.010) M T B S A S
M
R X 45°
F
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
MILLIMETERS
INCHES
DIM MIN MAX MIN MAX
A 9.80 10.00 0.386 0.393
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.054 0.068
D 0.35 0.49 0.014 0.019
F 0.40 1.25 0.016 0.049
G
1.27 BSC
0.050 BSC
J 0.19 0.25 0.008 0.009
K 0.10 0.25 0.004 0.009
M 0° 7° 0° 7°
P 5.80 6.20 0.229 0.244
R 0.25 0.50 0.010 0.019
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 “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does
not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in
systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of
the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such
unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless
against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death
associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part.
Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer.
How to reach us:
USA/EUROPE: Motorola Literature Distribution;
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447
JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, Toshikatsu Otsuki,
6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–3521–8315
MFAX: [email protected] –TOUCHTONE (602) 244–6609
INTERNET: http://Design–NET.com
HONG KONG: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
High–Speed CMOS Logic Data
DL129 — Rev 6
CODELINE
5
*MC74HC42/D*MC74HC42/D
MOTOROLA


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