SN74LS251 8-Input Multiplexer with 3-State Outputs
The TTL/MSI SN74LS251 is a high speed 8-Input Digital Multiplexer. It...
SN74LS251 8-Input Multiplexer with 3-State Outputs
The TTL/MSI SN74LS251 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 LS251 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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Schottky Process for High Speed Multifunction Capability On-Chip Select Logic Decoding Inverting and Non-Inverting 3-State Outputs Input Clamp Diodes Limit High Speed Termination Effects
LOW POWER
SCHOTTKY
GUARANTEED OPERATING RANGES
Symbol VCC TA IOH IOL Parameter Supply Voltage Operating Ambient Temperature Range Output Current – High Output Current – Low Min 4.75 0 Typ 5.0 25 Max 5.25 70 – 2.6 24 Unit V °C mA mA
16 1
PLASTIC N SUFFIX CASE 648
16 1
SOIC D SUFFIX CASE 751B
ORDERING INFORMATION
Device SN74LS251N SN74LS251D Package 16 Pin DIP 16 Pin Shipping 2000 Units/Box 2500/Tape & Reel
© Semiconductor Components Industries, LLC, 1999
1
December, 1999 – Rev. 6
Publication Order Number: SN74LS251/D
SN74LS251
CONNECTION DIAGRAM DIP (TOP VIEW)
VCC 16 I4 15 I5 14 I6 13 I7 12 S0 11 S1 10 S2 9
1 I3
2 I2
3 I1
4 I0
5 Z
6 Z
7 E0
8 GND
LOADING (Note a) PIN NAMES S0 – S2 E0 I0 – I7 Z Z Select Inputs Output Enable (Active LOW) Inputs Multiplexer Inputs Multiplexer Output Complementary Multiplexer Output HIGH 0.5 U.L. 0.5 U.L. 0.5 U.L. 65 U.L. 65 U.L. LOW 0.25 U.L. 0.25 U.L. 0....
