74HC/HCT646 Octal Bus Transceiver/register; 3-state

The 74HC/HCT646 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT646 consist of Bus Transceiver circuits with 3-state outputs, D-type Flip-Flops and control circuitry arranged for multiplexed transmission of data directly from the internal Registers Data on the 'A' or 'B' bus will be clocked into the Registers as the appropriate Clock (CPAB and CPBA) goes to a HIGH Logic level. Output enable (OE) and direction (DIR) inputs are provided to control the transceiver function. In the transceiver mode, data present at the high-impedance port may be stored in either the 'A' or 'B' Register or in both. The select source inputs (SAB and SBA) CAN multiplex stored and real-time (transparent mode) data. The direction (DIR) input determines which bus will receive data when OE is active (LOW). In the isolation mode (OE = HIGH), 'A' data may be stored in the 'B' Register and/or 'B' data may be stored in the 'A' Register When an output function is disabled, the input function is still enabled and may be used to store and transmit data. Only one of the two buses, A or B, may be driven at a time. The '646' is functionally identical to the '648', but has non-inverting data paths.
By NXP Semiconductors
Part Manufacturer Description Datasheet Samples
CD74HCT646M96 Texas Instruments High Speed CMOS Logic Octal Bus Transceivers/Registers with 3-State Outputs 24-SOIC -55 to 125
SN74HCT646NT3 Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-PDIP -40 to 85
SN74HCT646NT-00 Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24
CD74HCT646M Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, PLASTIC, SOIC-24
CD74HCT646M96E4 Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24
SN74HCT646NTE4 Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-PDIP -40 to 85
SN74HCT646NT Texas Instruments Octal Bus Transceivers And Registers With 3-State Outputs 24-PDIP -40 to 85
CD74HCT646EN Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDIP24, PLASTIC, DIP-24
CD74HCT646H Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, UUC24, DIE
CD74HCT646M96G4 Texas Instruments HCT SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOIC-24
74HCT646 's Packages74HCT646 's pdf datasheet
74HC646D SO
74HC646DB SSOP
74HC646N DIP
74HCT646D SO
74HCT646DB SSOP
74HCT646N DIP




74HCT646 Pinout, Pinouts
74HCT646 pinout,Pin out
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