Octal Bus Transceiver And Register With 3-State Outputs

The SN54LVC646A octal Bus Transceiver and Register is designed for 2.7-V to 3.6-V VCC operation, and the SN74LVC646A octal Bus Transceiver and Register is designed for 1.65-V to 3.6-V VCC operation.
These devices consist of bus-transceiver circuits, D-type Flip-Flops and control circuitry arranged for multiplexed transmission of data directly from the input bus or from the internal Registers Data on the A or B bus is clocked into the Registers on the low-to-high transition of the appropriate Clock (CLKAB or CLKBA) input. Figure 1 illustrates the four fundamental bus-management functions that are performed with the ?LVC646A devices.
Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver mode, data present at thehigh-impedance port is stored in either Register or in both.
The select-control (SAB and SBA) inputs CAN multiplex stored and real-time (transparent mode) data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high), A data is stored in one Register and B data CAN be stored in the other Register
When an output function is disabled, the input function is still enabled and CAN be used to store and transmit data. Only one of the two buses, A or B, CAN be driven at a time.
Inputs CAN be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators in a mixed 3.3-V/5-V system environment.
These devices are fully specified for partial-power-down applications using Ioff. The Ioff circuitry disables the outputs, preventing damaging current backflow through the device when it is powered down.
To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
SN74LVC646ANSRG4 Texas Instruments IC LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24, Bus Driver/Transceiver
SN74LVC646APW Texas Instruments Octal Bus Transceiver And Register With 3-State Outputs 24-TSSOP -40 to 85
SN74LVC646ADBR Texas Instruments Octal Bus Transceiver And Register With 3-State Outputs 24-SSOP -40 to 85
SN74LVC646ANSRE4 Texas Instruments LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24
SN74LVC646ANSR Texas Instruments LVC/LCX/Z SERIES, 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, SOP-24
SN74LVC646ADW Texas Instruments Octal Bus Transceiver And Register With 3-State Outputs 24-SOIC -40 to 85
SN74LVC646ADWG4 Texas Instruments Octal Bus Transceiver And Register With 3-State Outputs 24-SOIC -40 to 85
SN74LVC646APWR Texas Instruments Octal Bus Transceiver And Register With 3-State Outputs 24-TSSOP -40 to 85
SN74LVC646A 's PackagesSN74LVC646A 's pdf datasheet
SN74LVC646ADBLE SSOP
SN74LVC646ADBR SSOP
SN74LVC646ADBRE4 SSOP
SN74LVC646ADBRG4 SSOP
SN74LVC646ADW SOIC
SN74LVC646ADWE4 SOIC
SN74LVC646ADWG4 SOIC
SN74LVC646ADWR SOIC
SN74LVC646ADWRE4 SOIC
SN74LVC646ADWRG4 SOIC
SN74LVC646ANSR SO
SN74LVC646ANSRE4 SO
SN74LVC646ANSRG4 SO
SN74LVC646APW TSSOP
SN74LVC646APWE4 TSSOP
SN74LVC646APWG4 TSSOP
SN74LVC646APWLE TSSOP
SN74LVC646APWR TSSOP
SN74LVC646APWRE4 TSSOP
SN74LVC646APWRG4 TSSOP
SN74LVC646APWT TSSOP
SN74LVC646APWTE4 TSSOP
SN74LVC646APWTG4 TSSOP




SN74LVC646A Pinout, Pinouts
SN74LVC646A pinout,Pin out
This is one package pinout of SN74LVC646A,If you need more pinouts please download SN74LVC646A's pdf datasheet.

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