Part # 74ACT257 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

Part Description: Quad 2 channel multiplexer (3-state)

Part Details:

74ACT257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) s HIGH SPEED: t PD = 5 ns (TYP.) at VCC = 5V s LOW POWER DISSIPATION:ICC = 4 µA(MAX.) at TA=25°C s COMPATIBLE WITH TTL OUTPUTSVIH = 2V (MIN.), VIL = 0.8V (MAX.) s 50 TRANSMISSION LINE DRIVING CAPABILITY DIP SOP TSSOP s SYMMETRICAL OUTPUT IMPEDANCE:|IOH| = IOL = 24mA (MIN) s BALANCED PROPAGATION DELAYS: ORDER CODES tPLH tPHL PACKAGE TUBE T & R s OPERATING VOLTAGE RANGE:V DIP 74ACT257B CC (OPR) = 4.5V to 5.5V SOP 74ACT257M 74ACT257MTR s PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257 TSSOP 74ACT257TTR s IMPROVED LATCH-UP IMMUNITY SELECT input is held LOW, "A" data is selected; DESCRIPTION when SELECT input is held HIGH, "B" data is The 74ACT257 is an advanced high-speed CMOS selected. QUAD 2-CHANNEL MULTIPLEXER (3-STATE) The device is designed to interface directly High fabricated with sub-micron silicon gate and Speed CMOS systems with TTL, NMOS and double-layer metal wiring C2MOS tecnology. CMOS output voltage levels. It is composed of an independent 2-channel All inputs and outputs are equipped with multiplexer with common SELECT and ENABLE protection circuits against static discharge, giving (OE)inputs. It is a non-inverting multiplexer. When them 2KV ESD immunity and transient excess

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74ACT257.pdf Datasheet