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M74HCT646B1R Datasheet

Part NameDescriptionManufacturer
M74HCT646B1R HCT648 OCTAL BUS TRANSCEIVER/REGISTER (3-STATE, INV.) HCT646 OCTAL BUS TRANSCEIVER/REGISTER (3-STATE) STMICROELECTRONICS
STMicroelectronics STMICROELECTRONICS
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DESCRIPTION
The M74HCT646/648 are high speed CMOS OCTAL BUS TRANSCEIVERS AND REGISTERS, (3-STATE) fabricated in silicon gate C2MOS technology. They have the same high speed performance of LSTTL combined with true CMOS low power consumption. These devices consist of bus transceiver circuits with 3-state output, D-type flip-flops, and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal registers.

■ HIGH SPEED fMAX = 60 MHz (TYP.) AT VCC = 5 V
■ LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 25 °C
■ COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.) VIL = 0.8V (MAX)
■ OUTPUT DRIVE CAPABILITY 15 LSTTL LOADS
■ SYMMETRICAL OUTPUT IMPEDANCE |IOH| = IOL = 6 mA (MIN.)
■ BALANCED PROPAGATION DELAYS tPLH = tPHL
■ PIN AND FUNCTION COMPATIBLE WITH 54/74LS646/648

 

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