74hct157a IK Semicon Co., Ltd, 74hct157a Datasheet

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74hct157a

Manufacturer Part Number
74hct157a
Description
Quad 2-input Data Selectors/multiplexer
Manufacturer
IK Semicon Co., Ltd
Datasheet
Quad 2-Input Data Selectors/Multiplexer
High-Performance Silicon-Gate CMOS
device may be used as a level converter for interfacing TTL or NMOS
outputs to High Speed CMOS inputs.
determined by the Select input. The data is presented at the outputs in
noninvertered form. A high level on the Output Enable input sets all four
Y outputs to a low level.
• TTL/NMOS Compatible Input Levels
• Outputs Directly Interface to CMOS, NMOS, and TTL
• Operating Voltage Range: 4.5 to 5.5 V
• Low Input Current: 1.0 µA
The IN74HCT157A is identical in pinout to the LS/ALS157. This
This device routes 2 nibbles (A or B) to a single port (Y) as
LOGIC DIAGRAM
PIN 8 = GND
PIN 16 =V
CC
X=don’t care
A0-A3,B0-B3=the levels of the respective
Data-Word Inputs
Output
Enable
T
H
L
L
A
ORDERING INFORMATION
FUNCTION TABLE
= -55° to 125° C for all packages
Inputs
IN74HCT157AN Plastic
PIN ASSIGNMENT
IN74HCT157AD SOIC
TECHNICAL DATA
IN74HCT157A
Select
X
H
L
Outputs
Y0-Y3
A0-A3
B0-B3
Rev. 00
L

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74hct157a Summary of contents

Page 1

... Quad 2-Input Data Selectors/Multiplexer High-Performance Silicon-Gate CMOS The IN74HCT157A is identical in pinout to the LS/ALS157. This device may be used as a level converter for interfacing TTL or NMOS outputs to High Speed CMOS inputs. This device routes 2 nibbles ( single port (Y) as determined by the Select input. The data is presented at the outputs in noninvertered form ...

Page 2

... CC Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or V outputs must be left open. Parameter and GND Pins CC SOIC Package+ Parameter and V should be constrained to the range GND≤(V IN OUT IN74HCT157A Value Unit -0.5 to +7 ± ...

Page 3

... ⎢I ⎢ ≤ 4.0 mA 4.5 OUT GND 5 GND 5 =0µA OUT V =2.4 V, Any One Input GND, Other IN CC Inputs 5.5 I =0µA OUT IN74HCT157A Guaranteed Limit 25 °C ≤85 ≤125 Unit °C °C to -55°C 2.0 2.0 2.0 V 2.0 2.0 2.0 0.8 0.8 0.8 V 0.8 0.8 0.8 4.4 4.4 4.4 V 5.4 5.4 5.4 3.98 3.84 3.7 0.1 0.1 0 ...

Page 4

... V f Figure 1. Switching Waveforms Figure 3. Switching Waveforms =5.0 V ± 10 °C Parameter -55° Typical @25°C Figure 2. Switching Waveforms IN74HCT157A =50pF,Input t =t =6.0 ns Guaranteed Limit ≤85°C ≤125°C Unit ...

Page 5

... EXPANDED LOGIC DIAGRAM IN74HCT157A Rev. 00 ...

Page 6

... Maximum mold flash or protrusion 0.15 mm (0.006) per side for A; for B ‑ 0.25 mm (0.010) per side. N SUFFIX PLASTIC DIP (MS - 001BB SEATING -T- PLANE SUFFIX SOIC (MS - 012AC SEATING PLANE IN74HCT157A Dimension, mm Symbol MIN MAX A 18.67 19.69 B 6.1 7.11 5. 0.36 0.56 F 1.14 1.78 2. 7.62 J 0° 10° 2.92 3 ...

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