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24-SOIC
Integrated Circuits (ICs)

SN74ABT646DWR

Active
Texas Instruments

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

Deep-Dive with AI

Search across all available documentation for this part.

DocumentsImplications of Slow or Floating CMOS Inputs (Rev. E)Selecting the Right Level Translation Solution (Rev. A)+17
24-SOIC
Integrated Circuits (ICs)

SN74ABT646DWR

Active
Texas Instruments

OCTAL BUS TRANSCEIVERS AND REGISTERS WITH 3-STATE OUTPUTS

Deep-Dive with AI

DocumentsImplications of Slow or Floating CMOS Inputs (Rev. E)Selecting the Right Level Translation Solution (Rev. A)+17

Technical Specifications

Parameters and characteristics for this part

SpecificationSN74ABT646DWR
Current - Output High, Low [custom]64 mA
Current - Output High, Low [custom]32 mA
Mounting TypeSurface Mount
Number of Bits per Element8
Number of Elements1
Operating Temperature [Max]85 °C
Operating Temperature [Min]-40 °C
Output Type3-State
Package / Case24-SOIC
Package / Case [custom]7.5 mm
Package / Case [custom]0.295 in
Supplier Device Package24-SOIC
Voltage - Supply [Max]5.5 V
Voltage - Supply [Min]4.5 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTape & Reel (TR) 2000$ 0.82
6000$ 0.79
10000$ 0.76
Texas InstrumentsLARGE T&R 1$ 1.34
100$ 1.11
250$ 0.80
1000$ 0.60

Description

General part information

SN74ABT646A Series

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 can be performed with the ´ABT646.

Output-enable () and direction-control (DIR) inputs are provided to 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 direction control (DIR) determines which bus will receive data whenis low. In the isolation mode (high), A data may be stored in one register and/or B data may be stored in the other register.