| 1540481 | T54H52 | Exp. 2-2-2-3 input AND-OR gate | SGS-ATES |
| 1540482 | T54H52 | Exp. 2-2-2-3 input AND-OR gate | SGS-ATES |
| 1540483 | T54H53 | Exp. 2-2-2-3 input AND-OR-INVERT gate | SGS-ATES |
| 1540484 | T54H53 | Exp. 2-2-2-3 input AND-OR-INVERT gate | SGS-ATES |
| 1540485 | T54H54 | Dual 2-wide 2-input AND-OR-INVERT gate | SGS-ATES |
| 1540486 | T54H54 | Dual 2-wide 2-input AND-OR-INVERT gate | SGS-ATES |
| 1540487 | T54H60 | Dual 4-input expander | SGS-ATES |
| 1540488 | T54H61 | Triple 3-input expander | SGS-ATES |
| 1540489 | T54H61 | Triple 3-input expander | SGS-ATES |
| 1540490 | T54H62 | 3-2-2-3 input AND-OR expander | SGS-ATES |
| 1540491 | T54H62 | 3-2-2-3 input AND-OR expander | SGS-ATES |
| 1540492 | T54H71 | JK master-slave flip-flop | SGS-ATES |
| 1540493 | T54H71 | JK master-slave flip-flop | SGS-ATES |
| 1540494 | T54H72 | JK master-slave flip-flop | SGS-ATES |
| 1540495 | T54H72 | JK master-slave flip-flop | SGS-ATES |
| 1540496 | T54I | 50A 400V 50A/µs THYRISTOR, the anode is electrically connected to the metal case | IPRS Baneasa |
| 1540497 | T54J | 50A 400V 50A/µs THYRISTOR, the anode is electrically connected to the metal case | IPRS Baneasa |
| 1540498 | T54K | 50A 400V 50A/µs THYRISTOR, the anode is electrically connected to the metal case | IPRS Baneasa |
| 1540499 | T54LS166D2 | V(cc): -0.5 to +7V; 8-bit shift register | SGS Thomson Microelectronics |
|
| 1540500 | T54LS260 | DUAL 5 INPUT NOR GATE | etc |
| 1540501 | T54LS260D2 | DUAL 5 INPUT NOR GATE | etc |
| 1540502 | T55 | 50A Thyristor | IPRS Baneasa |
| 1540503 | T55 | 50A 500V 50A/µs THYRISTOR, the anode is electrically connected to the metal case | IPRS Baneasa |
| 1540504 | T5504-ML | Quad PCM codec with filters. Timing mode nondelayed. | Agere Systems |
| 1540505 | T5504-ML-TR | Quad PCM codec with filters. Timing mode nondelayed. Tape and reel. | Agere Systems |
| 1540506 | T55107A | Dual line receiver | SGS-ATES |
| 1540507 | T55108A | Dual line receiver, open collector output | SGS-ATES |
| 1540508 | T55109 | Dual line driver | SGS-ATES |
| 1540509 | T55110 | Dual line driver | SGS-ATES |
| 1540510 | T55207A | Dual MOS sense amplifier/line receiver | SGS-ATES |
| 1540511 | T55208A | Dual MOS sense amplifier/line receiver, open collector output | SGS-ATES |
| 1540512 | T5552 | Transponder module with 1-Kbit memory, includes the IDIC(TM) e5552 plus 425-pF capacitor | Atmel |
| 1540513 | T5554 | Standard R/W IDIC (264 Bit) with Integrated Capacitance | Atmel |
| 1540514 | T5557 | Read/write transponder IC for contactless RF identification with on-chip 75-pF capacitor | Atmel |
| 1540515 | T555701M01-DBW | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
| 1540516 | T555701M01-DDT | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
| 1540517 | T555701M01-DDW | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
| 1540518 | T555701M01-PAE | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
| 1540519 | T555701M01-PP | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
| 1540520 | T555701M01-TAS | Multifunctional 330-bit Read/Write RF-Identification IC | Atmel |
