Marking of electronic components, SMD Codes HB540, HB540**. SN74AHCT540DBR, SN74AHCT540DGVR, SN74AHCT540PW, ic marking code.
| PartNumber | Marking code | Manufacturer | Package |
|---|---|---|---|
| SN74AHCT540DBR | HB540 | SSOP-20 | |
| SN74AHCT540DGVR | HB540 | TVSOP-20 | |
| SN74AHCT540PW | HB540 | TSSOP-20 |