SN74ABT841ANSR

Latches Overview

The SN74ABT841ANSR is a 10-bit bus-interface D-type latch with 3-state outputs manufactured by Texas Instruments. It utilizes EPIC-IIB BiCMOS design for reduced power dissipation and features high-drive outputs capable of -32-mA IOH and 64-mA IOL. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range from -40°C to +85°C. Propagation delays are typically 4.1 ns (D to Q) and 4.1 ns (LE to Q).

Latches Feature Summary

• Designed specifically for driving highly capacitive or relatively low-impedance loads.
• Provides a high-impedance state during power up and power down to prevent bus loading.
• Buffered output-enable input allows retention or entry of data while outputs are disabled.

Latches Applications

• Implementing buffer registers.
• Configuring I/O ports.
• Bidirectional bus drivers.
• Working registers.

Latches Procurement Notes

Verify the package type matches the required PCB footprint, as the SN74ABT841A series is available in multiple packages including SOIC (DW), SSOP (DB), and TSSOP (PW). Confirm that the specific suffix corresponds to the desired packaging format and ensure compatibility with the intended operating temperature range before finalizing procurement.

Latches Selection Notes

Select this component when ten parallel latching channels with high drive capability are required. The ABT logic family offers faster switching speeds compared to standard TTL or CMOS alternatives. Ensure the application environment stays within the specified 4.5 V to 5.5 V supply voltage limits to maintain electrical characteristics and timing performance.

Latches Part Context

This part belongs to the SN74ABT841A family of 10-bit bus-interface D-type latches. It is part of Texas Instruments' broader ABT logic portfolio, which combines the speed of Schottky TTL with the low power consumption of advanced CMOS technologies. The 'A' suffix indicates the specific revision optimized for commercial temperature ranges.

Latches Replacement Considerations

SN74ABT841ADBR

Latches FAQ

How does the device behave during power-up?

The device enters a high-impedance state when VCC is between 0 and 2.1 V, preventing it from loading the bus lines significantly during power transitions.

Can data be entered while outputs are disabled?

Yes, the output-enable (OE) signal does not affect internal latch operations. Previously stored data can be retained or new data can be entered while the outputs remain in the high-impedance state.