74FCT841BSC

Latches Overview

The National Semiconductor 74FCT841BSC is a 10-bit bus interface latch belonging to the FCT logic series. It features non-inverting outputs with three-state capability, designed for high-speed parallel data latching in systems requiring wide address or data paths. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports an operating temperature range from -40°C to +85°C. Key electrical characteristics include a propagation delay of 13 ns at 5 V, with output drive capabilities of 32 mA sink and -32 mA source current. It is housed in a QSOP-24 surface-mount package.

Latches Feature Summary

• Provides ten-bit parallel data storage with non-inverting functionality for bus interface applications.
• Features three-state outputs that remain glitch-free during power-up and power-down sequences.
• Utilizes buffered control inputs to minimize AC effects and reduce loading on driving circuits.

Latches Applications

• High-speed parallel latching in microprocessor-based systems
• Expanding data width for buses carrying parity information
• Interface buffering between MOS microprocessors and peripheral devices

Latches Procurement Notes

Verify the manufacturer designation, as Texas Instruments acquired National Semiconductor's logic products. Confirm the specific suffix 'BSC' corresponds to the QSOP-24 package and industrial temperature grade. Ensure compatibility with existing board layouts referencing the AMD AM29841 pinout, as this component is functionally compatible with that legacy series. Check for moisture sensitivity levels and reflow soldering profile requirements appropriate for the thin-shrink small-outline package.

Latches Selection Notes

Select this component when designing systems that require ten-bit data latching with high-speed performance and low input loading. It is suitable for applications needing extra data width for wider address/data paths or buses carrying parity. Consider the three-state output feature if bidirectional bus sharing is required. Verify that the supply voltage constraints and thermal operating ranges align with the system environment before integration.

Latches Part Context

This part belongs to the 74FCT841/74F841 family of 10-bit bus interface latches. These devices are functionally and pin-compatible with the AMD AM29841 series, facilitating migration from older technologies. The FCT series combines FAST CMOS speed with CMOS power consumption levels, making it ideal for modern digital systems requiring high fan-in and light loading characteristics.

Latches Replacement Considerations

Public confirmed substitute part numbers: N74F841N (NXP Semiconductors), CY74FCT841CTQCT (Texas Instruments).