SN54/74LS151 8-INPUT MULTIPLEXER The TTL / MSI SN54 / 74LS151 is a high speed 8-input Digital Multiplexer. It provides, in one package, the ability to select one bit of data from up to eight sources. The LS151 can be used as a universal function generator to generate any logic function of four variables. Both assertion and negation outputs are provided.
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8-INPUT MULTIPLEXER
Schottky Process for High Speed Multifunction Capability On-Chip Select Logic Decoding Fully Buffered Complementary Outputs Input Clamp Diodes Limit High Speed Termination Effects
LOW POWER SCHOTTKY
J SUFFIX CERAMIC CASE 620-09 16
CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16
I4 15
I5 14
I6 13
I7 12
S0 11
S1 10
1
S2 9 N SUFFIX PLASTIC CASE 648-08
16 1
1 I3
2 I2
3 I1
4 I0
5 Z
6 Z
7 E
8 GND
D SUFFIX SOIC CASE 751B-03
16 1
ORDERING INFORMATION
PIN NAMES S0 – S2 E I0 – I7 Z Z
SN54LSXXXJ SN74LSXXXN SN74LSXXXD
LOADING (Note a) Select Inputs Enable (Active LOW) Input Multiplexer Inputs Multiplexer Output (Note b) Complementary Multiplexer Output (Note b)
HIGH
LOW
0.5 U.L. 0.5 U.L. 0.5 U.L. 10 U.L. 10 U.L.
0.25 U.L. 0.25 U.L. 0.25 U.L. 5 (2.5) U.L. 5 (2.5) U.L.
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.
Ceramic Plastic SOIC
LOGIC SYMBOL 7 4 3 2 1 15 14 13 12
11 10 9
E I0 I1 I2 I3 I4 I5 I6 I7 S0 S1 S2 Z Z 6
5
VCC = PIN 16 GND = PIN 8
FAST AND LS TTL DATA 5-1