SN54LS253

SN54/74LS253 DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS The LSTTL/ MSI SN54/ 74LS253 is a Dual 4-Input Multiplexer with 3-state outputs. It can select two bits of data from four sources using common select inputs. The outputs may be individually switched to a high impedance state with a HIGH on the respective Output Enable (E0) inputs, allowing the outputs to interface directly with bus oriented systems. It is fabricated with the Schottky barrier diode process for high speed and is completely compatible with all Motorola TTL families. DUAL 4-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS LOW POWER SCHOTTKY Schottky Process for High Speed Multifunction Capability Non-Inverting 3-State Outputs Input Clamp Diodes Limit High Speed Termination Effects 16 J SUFFIX CERAMIC CASE 620-09 1 CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 E0b 15 S0 14 I3b 13 I2b 12 I1b 11 I0b 10 Zb 9 NOTE: The Flatpak version has the same pinouts (Connection Diagram) as the Dual In-Line Package. 16 1 N SUFFIX PLASTIC CASE 648-08 1 E0a 2 S1 3 I3a 4 I2a 5 I1a 6 I0a 7 Za 8 GND 16 1 D SUFFIX SOIC CASE 751B-03 PIN NAMES LOADING (Note a) HIGH LOW 0.25 U.L. 0.25 U.L. 0.25 U.L. 15 (7.5) U.L. ORDERING INFORMATION SN54LSXXXJ SN74LSXXXN SN74LSXXXD Ceramic Plastic SOIC S0, S1 Multiplexer A E0a I0a – I3a Za Multiplexer B E0b I0b – I3b Zb Common Select Inputs Output Enable (Active LOW) Input Multiplexer Inputs Multiplexer Output (Note b) Output Enable (Active LOW) Input Multiplexer Inputs Multiplexer ...