Part # 74VHC257 datasheet

Part Manufacturer: ST Microelectronics

ST Microelectronics

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

Part Details:

74VHC257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) s HIGH SPEED: t PD = 3.7ns (TYP.) at VCC = 5V s LOW POWER DISSIPATION:ICC = 4 µA (MAX.) at TA=25°C s HIGH NOISE IMMUNITY:VNIH = VNIL = 28% VCC (MIN.) s POWER DOWN PROTECTION ON INPUTS SOP TSSOP s SYMMETRICAL OUTPUT IMPEDANCE:|IOH| = IOL = 8mA (MIN) s BALANCED PROPAGATION DELAYS: Table 1: Order Codes tPLH tPHL s OPERATING VOLTAGE RANGE: PACKAGE T & R VCC(OPR) = 2V to 5.5V SOP 74VHC257MTR s PIN AND FUNCTION COMPATIBLE WITH TSSOP 74VHC257TTR 74 SERIES 257 s IMPROVED LATCH-UP IMMUNITY "High", all outputs become in high impedance s LOW NOISE: VOLP = 0.8V (MAX.) state. If SELECT INPUT is held "Low", "A" data isselected, when SELECT INPUT is "High", "B" data DESCRIPTION is chosen. The 74VHC257 is an advanced high-speed Power down protection is provided on all inputs CMOS QUAD 2-CHANNEL MULTIPLEXER and 0 to 7V can be accepted on inputs with no (3-STATE) fabricated with sub-micron silicon gate regard to the supply voltage. This device can be and double-layer metal wiring C2MOS technology. used to interface 5V to 3V. It is composed of four independent 2-channel All inputs and outputs are equipped with multiplexers with common SELECT and ENABLE protection circuits against static discharge, giving (OE) INPUT. The VHC257 is a non-inverting them 2KV ESD immunity and transient excess multiplexer. When the ENABLE INPUT is held

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74VHC257.pdf Datasheet