SN74ABT841ADBRE4

Latches Overview

The SN74ABT841ADBRE4 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. It includes ESD protection exceeding 2000 V per MIL-STD-883 and latch-up performance exceeding 500 mA per JEDEC JESD-17. The component is housed in a 24-pin SSOP package.

Latches Feature Summary

• EPIC-IIB BiCMOS design significantly reduces power dissipation
• High-drive outputs support highly capacitive or low-impedance loads
• Outputs enter high-impedance state during power up and power down
• Buffered output-enable input isolates internal latch operations

Latches Applications

• Implementing buffer registers
• I/O port implementations
• Bidirectional bus drivers
• Working registers

Latches Procurement Notes

Verify the specific ordering suffix 'E4' corresponds to lead-free (NIPDAU) finish and RoHS compliance as indicated in the packaging data. Confirm the package type matches the DB drawing for SSOP-24 requirements. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Check that unused inputs are held high or low to prevent floating states.

Latches Selection Notes

Select this component when a 10-bit wide storage interface is required with high drive capability. The ABT series offers faster switching characteristics compared to standard TTL families. Consider the SSOP package dimensions if board space is constrained relative to larger SOIC or DIP options. Verify that the 4.5 V to 5.5 V supply voltage aligns with the system power architecture.

Latches Part Context

This part belongs to the SN74ABT841A family of 10-bit latches. It shares functional similarities with other ABT logic devices but is distinct in its 10-bit width and specific latch configuration. The 'DB' suffix denotes the Shrink Small-Outline Package, while 'E4' indicates environmental compliance. It serves as a bridge between microprocessors and external memory or peripheral buses.

Latches Replacement Considerations

SN74ABT841ADBR

Latches FAQ

How does the output-enable pin affect internal latch operations?

The OE pin places outputs in a high-impedance state but does not affect the internal operations of the latch. Previously stored data can be retained or new data entered while outputs are disabled.

What is the behavior of the device during power-up and power-down?

When VCC is between 0 and 2.1 V, the device enters a high-impedance state automatically. To ensure this state above 2.1 V, OE should be tied to VCC through a pullup resistor.