74ACT16651DLRG4

Buffers, Drivers, Receivers, Transceivers Overview

The Texas Instruments 74ACT16651DLRG4 is a 16-bit bus transceiver and register featuring 3-state outputs. It utilizes the Widebus family architecture with independent registers and enables for A and B buses, supporting multiplexed real-time and stored data transmission. The device operates on a single supply voltage ranging from 4.5 V to 5.5 V. It provides TTL-compatible inputs and CMOS output levels. Key electrical parameters include a propagation delay of up to 12.7 ns and an operating temperature range of -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Multiplexed Real-Time and Stored Data: Allows selection between direct bus transfer and internal register storage via select-control inputs.
• Independent Bus Control: Features separate enable and clock controls for A and B buses to manage data flow direction and storage.
• Glitch-Free Select Control: Circuitry eliminates decoding glitches during transitions between stored and real-time data modes.
• Widebus Shrink Package: Delivers high I/O pin count in a compact SSOP-56 package optimized for PCB layout.

Buffers, Drivers, Receivers, Transceivers Applications

• High-density bus management systems requiring simultaneous data buffering and routing
• Multiplexed data transmission interfaces between microprocessors and peripheral devices
• Memory buffer applications utilizing internal D-type flip-flops for data storage

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' indicates lead-free and RoHS compliance status as per manufacturer documentation. Confirm the DL package designation corresponds to the SSOP-56 physical footprint required for your printed circuit board design. Ensure compatibility with the specified 4.5 V to 5.5 V power supply range before integration into the target system architecture.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require 16-bit wide data paths with integrated storage capabilities. The ACT logic series offers speed suitable for high-frequency operations up to 90 MHz. Consider the SSOP-56 package dimensions if space constraints are critical. Verify that input voltage levels align with the TTL-compatible requirements of the driving signals in the application circuit.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments Widebus family, designed to provide increased functionality within standard small-outline packages. The 74ACT16651 combines transceiver and register functions, enabling complex bus arbitration tasks. It is part of the broader 74ACT logic line, which balances speed and power consumption for general-purpose digital applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for SN54ACT16651 variants for extended military temperature ranges. Verify functional equivalence with other 16-bit ACT transceivers if pinout compatibility is required. Review datasheet specifications for timing differences when substituting with similar bus interface components.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle data storage?

Data can be stored in internal D-type flip-flops triggered by low-to-high transitions on the CLKAB or CLKBA inputs, regardless of select-control or output-enable states.

What is the purpose of the select-control inputs?

The SAB and SBA inputs determine whether real-time data from the bus or stored data from the internal registers is transferred to the opposite bus.

Can the device operate as two separate 8-bit transceivers?

Yes, the 16-bit transceiver can be configured as two independent 8-bit transceivers using the separate A and B bus control lines.