74HCT40105D,118

Overview

The 74HCT40105D,118 is a first-in/first-out elastic storage register manufactured by Nexperia. It stores 16 words of 4-bit data and handles input/output at different shifting rates. The device operates with a supply voltage range of 4.5 V to 5.5 V. Static characteristics include an input leakage current maximum of ±1.0 µA and a supply current maximum of 160 µA. Dynamic performance at 4.5 V includes a propagation delay from MR to DIR/DOR of 35 ns (max) and a shift-in pulse width minimum of 16 ns.

Feature Summary

• Independent asynchronous inputs and outputs for flexible system integration
• Expandable in either direction to increase word length or capacity
• Reset capability with master-reset function to clear control functions
• Status indicators on inputs and outputs via DIR and DOR flags

Applications

• Buffering between asynchronous systems
• Data rate conversion applications
• Elastic storage registers in digital logic circuits

Procurement Notes

Verify the manufacturer designation as Nexperia B.V., consistent with the provided datasheet source. Confirm the package type is SO16 (SOT109-1). Ensure the ordering suffix matches the specific revision requirements. Check RoHS compliance status against current environmental declarations before finalizing procurement orders.

Selection Notes

Select this component when TTL-compatible input levels are required for CMOS FIFO applications. The HCT series ensures compatibility with standard TTL logic families while maintaining CMOS power consumption benefits. Verify that the operating temperature range meets the specific environmental constraints of the target application design.

Part Context

This part belongs to the 74HC/HCT40105 family of high-speed Si-gate CMOS devices. It is pin compatible with the 4010B series but offers improved switching speeds. The device complies with JEDEC standard JESD7A and features ESD protection exceeding 2000 V according to JESD22-A114F.

Replacement Considerations

The 74HC40105D serves as the HC-series equivalent with CMOS input levels. Other variants include the DB (SSOP16) and PW (TSSOP16) packages within the same functional family.