74HCT245PW,118
Nexperia USA Inc.
Needs validationmedium risk
A functional alternative in the same package, but with a different logic family (HCT) requiring voltage and input level review.
Best Alternatives to 74HC245PW,118
The 74HC245PW,118 is a popular octal bus transceiver from Nexperia in a 20-TSSOP package. Finding a substitute requires careful matching of supply voltage, logic levels, and pinout.
AI replacement insight
Electrical riskhigh
Supply voltage and logic level differences require careful engineering review.
Package risklow
The 20-TSSOP package is standard for this function.
Can it be replaced directly?
No direct drop-in replacement exists that matches all parameters. All close alternatives belong to different logic families (HCT, LVC, AHCT) and have different voltage or input level specifications.
Best replacement path
For 5V systems, 74HCT245PW,118 is the most common alternative, but requires verification of input logic levels. For 3.3V systems, 74LVC245APW,118 is a possibility.
Main risk
The main risk is electrical incompatibility due to differences in supply voltage range and input logic levels (CMOS vs. TTL).
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | 74HC245PW,118 | 74HCT245PW,118 | 74LVC245APW,118 | 74AHCT245PW,118 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 20-TSSOP | 20-TSSOP | - | - | 20-TSSOP — Package matches. |
| Pinout | Standard 245 pinout | Likely identical | - | - | Likely identical — Function is identical, but pinout must be verified from datasheet. |
| Voltage | 2.0V to 6.0V | 4.5V to 5.5V | - | - | 4.5V to 5.5V — Narrower supply range; not suitable for <4.5V operation. |
| Interface | CMOS | TTL | - | - | TTL (Advanced High-Speed) — AHCT is faster and has TTL inputs; may cause timing issues. |
| Temperature | -40°C to +125°C | -40°C to +125°C | - | - | -40°C to +125°C — Operating temperature range matches. |
Application & sourcing insights
Questions & answers
The best alternative depends on your system's supply voltage. For 5V systems, 74HCT245PW,118 is a common choice but requires checking TTL input level compatibility. For 3.3V systems, 74LVC245APW,118 may work. Always verify the datasheet.