16-BIT BUS TRANSCEIVER AND REGISTER WITH 3-STATE OUTPUTSThis 16-bit Bus Transceiver and Register is
designed for low-voltage (3.3-V) VCC operation.
The SN74LVC16646 CAN be used as two 8-bit
transceivers or one 16-bit transceiver. The device
consists 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 CAN be performed with the
SN74LVC16646.
Output-enable (OE) and direction-control (DIR) inputs control the transceiver functions. In the transceiver
mode, data present at the high-impedance port may be stored in either Register or in both. The select-control
(SAB and SBA) inputs CAN multiplex stored and real-time (transparent mode) data. The circuitry used for select
control eliminates the typical decoding glitch that occurs in a multiplexer during the transition between stored
and real-time data. DIR determines which bus receives data when OE is low. In the isolation mode (OE high),
A data may be stored in one Register and/or B data may 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, may be driven at a time.
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.
Active bus-hold circuitry holds unused or floating data inputs at a valid Logic level. By Texas Instruments
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Part | Manufacturer | Description | Datasheet | Samples | |
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SN74LVC16646DL | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85 | |||
SN74LVC16646ADLR | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85 | |||
SN74LVC16646ADL | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85 | |||
SN74LVC16646ADGGR | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-TSSOP -40 to 85 | |||
SN74LVC16646ADGVR | Texas Instruments | LVC/LCX/Z SERIES, DUAL 8-BIT REGISTERED TRANSCEIVER, TRUE OUTPUT, PDSO56, GREEN, PLASTIC, TVSOP-56 | |||
SN74LVC16646DLR | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85 | |||
SN74LVC16646ADLRG4 | Texas Instruments | 16-Bit Bus Transceiver And Register With 3-State Outputs 56-SSOP -40 to 85 |
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SN74LVC16646 Pb-Free | SN74LVC16646 Cross Reference | SN74LVC16646 Schematic | SN74LVC16646 Distributor |
SN74LVC16646 Application Notes | SN74LVC16646 RoHS | SN74LVC16646 Circuits | SN74LVC16646 footprint |