74HCT20DB,112

Overview

The NXP USA Inc. 74HCT20DB,112 is a dual 4-input NAND gate from the 74HCT logic family, housed in a 14-lead SSOP plastic shrink small outline package (SOT337-1). It operates within a supply voltage range of 4.5 V to 5.5 V and supports an ambient temperature range from -40 °C to +125 °C. The device features TTL-compatible input levels and includes input clamp diodes for interfacing with voltages exceeding VCC. Static characteristics specify low leakage current and defined output drive capabilities under recommended operating conditions.

Feature Summary

• Dual 4-input NAND logic function
• TTL-compatible input levels
• Input clamp diodes for overvoltage protection
• High ESD protection performance

Applications

• General digital logic processing
• Signal gating and switching
• Interface circuits requiring TTL-to-CMOS compatibility

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when a dual 4-input NAND function is required with TTL-compatible inputs. Ensure the design accommodates the 4.5 V to 5.5 V supply voltage range and the thermal derating requirements for the SSOP14 package above 60 °C. Confirm that the 14-lead SSOP footprint matches the PCB layout constraints.

Part Context

This part belongs to the 74HCT series of high-speed Si-gate CMOS devices, which are pin-compatible with low power Schottky TTL (LSTTL). The 74HCT20 variant specifically provides two independent 4-input NAND gates. The 'DB' designation indicates the SSOP14 package option, while the ',112' suffix typically denotes tape and reel packaging, though verification against official documentation is necessary.

Replacement Considerations

Public confirmed substitute part numbers: None identified.