ONE-OF-TEN DECODER
SN54/74LS42 ONE-OF-TEN DECODER
The LSTTL / MSI SN54 / 74LS42 is a Multipurpose Decoder designed to accept four BCD input...
Description
SN54/74LS42 ONE-OF-TEN DECODER
The LSTTL / MSI SN54 / 74LS42 is a Multipurpose Decoder designed to accept four BCD inputs and provide ten mutually exclusive outputs. The LS42 is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families.
ONE-OF-TEN DECODER
LOW POWER SCHOTTKY
Multifunction Capability Mutually Exclusive Outputs Demultiplexing Capability Input Clamp Diodes Limit High Speed Termination Effects
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC 16 A0 15 A1 14 A2 13 A3 12 9 11 8 10 7 9
NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 16 1
J SUFFIX CERAMIC CASE 620-09
1 0
2 1
3 2
4 3
5 4
6 5
7 6
8 GND
16 1
N SUFFIX PLASTIC CASE 648-08
PIN NAMES
LOADING (Note a) HIGH LOW 0.25 U.L. 5(2.5) U.L.
16 1
A0 – A3 0 to 9
Address Inputs Outputs, Active LOW (Note b)
0.5 U.L. 10 U.L.
D SUFFIX SOIC CASE 751B-03
NOTES: a) 1 TTL Unit Load (U.L.) = 40 µA HIGH/1.6 mA LOW. b) The Output LOW drive factor is 2.5 U.L. for Military (54) and 5 U.L. for Commercial (74) Temperature Ranges.
ORDERING INFORMATION
SN54LSXXJ SN74LSXXN SN74LSXXD Ceramic Plastic SOIC
LOGIC DIAGRAM
A0
15
A1
14
A2
13
A3
12
LOGIC SYMBOL
15 14 13 12
A0
A1
A2
A3
0 1 2 3 4 5 6 7 8 9
1
2
3
4
5
6
7
9
10
11
1 2 3 4 5 6 7 9 10 11 VCC = PIN 16 GND = PIN 8
0
1
2
3
4
5
6
7
8
9
VCC = PIN 16 GND = PIN 8 = PIN NUMBERS
FAST AND LS TTL DATA 5-53
SN54/74LS42
FUNCTIONAL ...
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