| 1588521 | U3665M-MFP | Baseband Delay Line 64 us (Improved Version) | TEMIC |
| 1588522 | U3666M | Baseband Delay Line o.o64 ms (Improved Version of U3665M) | TEMIC |
| 1588523 | U3741B | UHF ASK/FSK Receiver | TEMIC |
| 1588524 | U3741BM | UHF remote control receiver | Atmel |
| 1588525 | U3741BM-M2FL | UHF ASK receiver IC. | Atmel |
| 1588526 | U3741BM-M2FL | UHF ASK/FSK Receiver | TEMIC |
| 1588527 | U3741BM-M2FLG3 | UHF ASK receiver IC. | Atmel |
| 1588528 | U3741BM-M2FLG3 | UHF ASK/FSK Receiver | TEMIC |
| 1588529 | U3741BM-M3FL | UHF ASK receiver IC. | Atmel |
| 1588530 | U3741BM-M3FL | UHF ASK/FSK Receiver | TEMIC |
| 1588531 | U3741BM-M3FLG3 | UHF ASK receiver IC. | Atmel |
| 1588532 | U3741BM-M3FLG3 | UHF ASK/FSK Receiver | TEMIC |
| 1588533 | U3742BM | UHF remote control receiver | Atmel |
| 1588534 | U3742BM-M3FL | UHF ASK/FSK receiver. | Atmel |
| 1588535 | U3742BM-M3FLG3 | UHF ASK/FSK receiver. | Atmel |
| 1588536 | U3745BM | UHF ASK receiver | Atmel |
| 1588537 | U3745BM-MFL | UHF ASK RECEIVER IC | Atmel |
| 1588538 | U3745BM-MFLG3 | UHF ASK RECEIVER IC | Atmel |
| 1588539 | U3750BM | One Chip Telephone Circuit | TEMIC |
|
| 1588540 | U3760MB | Low-Voltage Standard Telephone Circuit | TEMIC |
| 1588541 | U3760MB-MFN | Low-Voltage Standard Telephone Circuit | TEMIC |
| 1588542 | U3760MB-MFNG3 | Low-Voltage Standard Telephone Circuit | TEMIC |
| 1588543 | U3760MB-MSD | Low-Voltage Standard Telephone Circuit | TEMIC |
| 1588544 | U3761MB | Low Voltage Standard Telephone Circuit with 13 Memories | TEMIC |
| 1588545 | U3761MB-AFN | Low Voltage Standard Telephone Circuit with 13 Memories | TEMIC |
| 1588546 | U3761MB-AFNG3 | Low Voltage Standard Telephone Circuit with 13 Memories | TEMIC |
| 1588547 | U3761MB-ASD | Low Voltage Standard Telephone Circuit with 13 Memories | TEMIC |
| 1588548 | U3761MB-T | One-chip telephone, low-voltage speech circuit, dialer 3 + 10 memories | Atmel |
| 1588549 | U3761MB-TFN | Universal Telephone IC - All Functions Integrated | Atmel |
| 1588550 | U3761MB-TFNG3 | Universal Telephone IC - All Functions Integrated | Atmel |
| 1588551 | U3761MBS | Universal Telephone IC | TEMIC |
| 1588552 | U3762MB | Universal Telephone IC - All Functions Integrated | TEMIC |
| 1588553 | U3770M | CT2 I/Q Modulator and Clock Circuitry | TEMIC |
| 1588554 | U3800 | Multi Standard Feature Phone Integrated Circuit | Vishay |
| 1588555 | U3800BM | Multi Standard Feature Phone Integrated Circuit | TEMIC |
| 1588556 | U3800BM-CP | Multi standard feature phone integrated circuit | Vishay |
| 1588557 | U3800BM-FN | Multi standard feature phone integrated circuit | Vishay |
| 1588558 | U3810BM | Multi-Standard Feature Phone IC | TEMIC |
| 1588559 | U3900BM | Programmable Telephone Audio Processor | TEMIC |
| 1588560 | U3900BM-AFN | Programmable Telephone Audio Processor | TEMIC |
