74HC157 Datasheet PDF - Motorola Semiconductors
Part Number | 74HC157 | |
Description | Quad 2-Input Data Selectors/Multiplexers | |
Manufacturers | Motorola Semiconductors | |
Logo | ||
There is a preview and 74HC157 download ( pdf file ) link at the bottom of this page. Total 6 Pages |
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SEMICONDUCTOR TECHNICAL DATA
Quad 2-Input Data
Selectors/Multiplexers
High–Performance Silicon–Gate CMOS
The MC54/74HC157A is identical in pinout to the LS157. The device
inputs are compatible with standard CMOS outputs; with pullup resistors,
they are compatible with LSTTL outputs.
This device routes 2 nibbles (A or B) to a single port (Y) as determined by
the Select input. The data is presented at the outputs in noninverted form. A
high level on the Output Enable input sets all four Y outputs to a low level.
The HC157A is similar in function to the HC257 which has 3–state outputs.
• 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 µA
• High Noise Immunity Characteristic of CMOS Devices
• In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
• Chip Complexity: 82 FETs or 20.5 Equivalent Gates
LOGIC DIAGRAM
NIBBLE
A INPUTS
NIBBLE
B INPUTS
A0 2
A1 5
A2 11
A3 14
B0 3
B1 6
B2 10
B3 13
4 Y0
7 Y1
9 Y2
12 Y3
DATA
OUTPUTS
SELECT
OUTPUT
ENABLE
1
15
PIN 16 = VCC
PIN 8 = GND
MC54/74HC157A
16
1
J SUFFIX
CERAMIC PACKAGE
CASE 620–10
16
1
16
1
N SUFFIX
PLASTIC PACKAGE
CASE 648–08
D SUFFIX
SOIC PACKAGE
CASE 751B–05
16
1
DT SUFFIX
TSSOP PACKAGE
CASE 948F–01
ORDERING INFORMATION
MC54HCXXXAJ
MC74HCXXXAN
MC74HCXXXAD
MC74HCXXXADT
Ceramic
Plastic
SOIC
TSSOP
PIN ASSIGNMENT
SELECT
A0
B0
Y0
A1
B1
Y1
GND
1
2
3
4
5
6
7
8
16 VCC
15
OUTPUT
ENABLE
14 A3
13 B3
12 Y3
11 A2
10 B2
9 Y2
FUNCTION TABLE
Inputs
Output
Outputs
Enable Select Y0 – Y3
HX L
L L A0 – A3
L H B0 – B3
X = don’t care
A0 – A3, B0 – B3 = the levels
of the respective Data–Word
Inputs.
10/95
© Motorola, Inc. 1995
1 REV 6
|
|
MC54/74HC157A
–A
–
16
1
OUTLINE DIMENSIONS
J SUFFIX
CERAMIC PACKAGE
CASE 620–10
9 ISSUE V
–B
–
8
CL
–T
SEAT–ING
PLANE
F
NK
E
G
D 16 PL
0.25 (0.010) M T A S
M
J 16 PL
0.25 (0.010) M T B S
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: INCH.
3. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
4. DIM F MAY NARROW TO 0.76 (0.030) WHERE
THE LEAD ENTERS THE CERAMIC BODY.
INCHES
MILLIMETERS
DIM MIN MAX MIN MAX
A 0.750 0.785 19.05 19.93
B 0.240 0.295 6.10 7.49
C — 0.200 — 5.08
D 0.015 0.020 0.39 0.50
E 0.050 BSC 1.27 BSC
F 0.055 0.065 1.40 1.65
G 0.100 BSC
2.54 BSC
J 0.008 0.015 0.21 0.38
K 0.125 0.170 3.18 4.31
L 0.300 BSC 7.62 BSC
M 0° 15° 0° 15°
N 0.020 0.040 0.51 1.01
–A
–
16
1
H
G
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
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
SEAT–ING
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
High–Speed CMOS Logic Data
DL129 — Rev 6
5
MOTOROLA
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