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HC257 数据手册 ( 数据表 ) - STMicroelectronics

零件编号产品描述(功能)生產廠家
HC257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) ST-Microelectronics
STMicroelectronics ST-Microelectronics
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HC257 Datasheet PDF : HC257 pdf   
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DESCRIPTION
The 74VHC257 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.

■ HIGH SPEED: tPD = 3.7ns (TYP.) at VCC = 5V
■ LOW POWER DISSIPATION: ICC = 4 µA (MAX.) at TA=25°C
■ HIGH NOISE IMMUNITY: VNIH = VNIL = 28% VCC (MIN.)
■ POWER DOWN PROTECTION ON INPUTS
■ SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 8mA (MIN)
■ BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL
■ OPERATING VOLTAGE RANGE: VCC(OPR) = 2V to 5.5V
■ PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 257
■ IMPROVED LATCH-UP IMMUNITY
■ LOW NOISE: VOLP = 0.8V (MAX.)

 

HC257 有关数据资料列表

零件编号产品描述(功能)PDF生產廠家
74VHC257 QUAD 2 CHANNEL MULTIPLEXER (3-STATE) 74VHC257 View STMicroelectronics
M74HC257B1R QUAD 2 CHANNEL MULTIPLEXER (3-STATE) M74HC257B1R View STMicroelectronics
M74HC258 QUAD 2 CHANNEL MULTIPLEXER (3-STATE, INVERTING) M74HC258 View STMicroelectronics
TC74AC257P TC74AC257P/F/FN 2-Channel Multiplexer (3-state)/ TC74AC258P/F/FN 2-Channel Multiplexer (3-state,inverting) TC74AC257P View Toshiba
M54HC153 HC253 DUAL 4 CHANNEL MULTIPLEXER 3 STATE OUTPUT HC153 DUAL 4 CHANNEL MULTIPLEXER M54HC153 View STMicroelectronics
HC257 QUAD 2-CHANEL MULTIPLEXER (3-STATE) HC257 View Toshiba
74HC257 QUAD 2-CHANEL MULTIPLEXER (3-STATE) 74HC257 View Toshiba
54LS257 QUAD 2-INPUT MULTIPLEXER WITH 3-STATE OUTPUTS 54LS257 View Motorola => Freescale
MC74ACT258 Quad 2-Input Multiplexer with 3-State Outputs MC74ACT258 View Motorola => Freescale
DM74S257CW 3-STATE Quad 1-of-2 Data Selector/Multiplexer DM74S257CW View Fairchild Semiconductor

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