Datasheet4U Logo Datasheet4U.com

74ACT257 - QUAD 2 CHANNEL MULTIPLEXER

General Description

The ACT257 is an advanced high-speed CMOS QUAD 2 CHANNEL MULTIPLEXER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology.

It is ideal for low power applications mantaining high speed operation similar to equivalent Bipolar Schottky TTL.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
74ACT257 Quad 2-Input Multiplexer Fairchild Semiconductor
74ACT251 8-Input Multiplexer Fairchild Semiconductor
74ACT253 Dual 4-Input Multiplexer National Semiconductor
74ACT253 Dual 4-Input Multiplexer Fairchild Semiconductor
74ACT258 Quad 2-Input Multiplexer Fairchild Semiconductor

Other Datasheets by STMicroelectronics

Part Number Description
74ACT20 DUAL 4-INPUT NAND GATE
74ACT240 OCTAL BUS BUFFER
74ACT244 OCTAL BUS BUFFER
74ACT245 OCTAL BUS TRANSCEIVER
74ACT273 OCTAL D-TYPE FLIP-FLOP

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
74ACT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) s s s s s s s s s HIGH SPEED: tPD =5 ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 8 µA (MAX.) at TA = 25 oC COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN), VIL = 0.8V (MAX) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24 mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257 IMPROVED LATCH-UP IMMUNITY B M (Plastic Package) (Micro Package) ORDER CODES : 74ACT257B 74ACT257M ENABLE INPUT. The AC257 is a non inverting multiplexer. When the ENABLE INPUT is held ”High” outputs of both IC’s become high impedance state.