Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20
| Parameter Name | Attribute value |
| Is it Rohs certified? | incompatible |
| Maker | Signetics |
| package instruction | SOP, SOP20,.4 |
| Reach Compliance Code | unknown |
| Other features | WITH DIRECTION CONTROL |
| Control type | COMMON CONTROL |
| Counting direction | BIDIRECTIONAL |
| series | LS |
| JESD-30 code | R-PDSO-G20 |
| JESD-609 code | e0 |
| Logic integrated circuit type | BUS TRANSCEIVER |
| MaximumI(ol) | 0.024 A |
| Number of digits | 8 |
| Number of functions | 1 |
| Number of ports | 2 |
| Number of terminals | 20 |
| Maximum operating temperature | 70 °C |
| Minimum operating temperature | |
| Output characteristics | 3-STATE |
| Output polarity | TRUE |
| Package body material | PLASTIC/EPOXY |
| encapsulated code | SOP |
| Encapsulate equivalent code | SOP20,.4 |
| Package shape | RECTANGULAR |
| Package form | SMALL OUTLINE |
| power supply | 5 V |
| Prop。Delay @ Nom-Sup | 15 ns |
| propagation delay (tpd) | 15 ns |
| Certification status | Not Qualified |
| Maximum supply voltage (Vsup) | 5.25 V |
| Minimum supply voltage (Vsup) | 4.75 V |
| Nominal supply voltage (Vsup) | 5 V |
| surface mount | YES |
| technology | TTL |
| Temperature level | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) |
| Terminal form | GULL WING |
| Terminal pitch | 1.27 mm |
| Terminal location | DUAL |
| translate | N/A |





| N74LS645D | N74LS645-1D | N74LS645-1N | N74LS645N | |
|---|---|---|---|---|
| Description | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDSO20 | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDIP20 | Bus Transceiver, LS Series, 1-Func, 8-Bit, True Output, TTL, PDIP20 |
| Is it Rohs certified? | incompatible | incompatible | incompatible | incompatible |
| Maker | Signetics | Signetics | Signetics | Signetics |
| Reach Compliance Code | unknown | unknown | unknown | unknown |
| Other features | WITH DIRECTION CONTROL | WITH DIRECTION CONTROL | WITH DIRECTION CONTROL | WITH DIRECTION CONTROL |
| Control type | COMMON CONTROL | COMMON CONTROL | COMMON CONTROL | COMMON CONTROL |
| Counting direction | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL | BIDIRECTIONAL |
| series | LS | LS | LS | LS |
| JESD-30 code | R-PDSO-G20 | R-PDSO-G20 | R-PDIP-T20 | R-PDIP-T20 |
| JESD-609 code | e0 | e0 | e0 | e0 |
| Logic integrated circuit type | BUS TRANSCEIVER | BUS TRANSCEIVER | BUS TRANSCEIVER | BUS TRANSCEIVER |
| MaximumI(ol) | 0.024 A | 0.048 A | 0.048 A | 0.024 A |
| Number of digits | 8 | 8 | 8 | 8 |
| Number of functions | 1 | 1 | 1 | 1 |
| Number of ports | 2 | 2 | 2 | 2 |
| Number of terminals | 20 | 20 | 20 | 20 |
| Maximum operating temperature | 70 °C | 70 °C | 70 °C | 70 °C |
| Output characteristics | 3-STATE | 3-STATE | 3-STATE | 3-STATE |
| Output polarity | TRUE | TRUE | TRUE | TRUE |
| Package body material | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY | PLASTIC/EPOXY |
| encapsulated code | SOP | SOP | DIP | DIP |
| Encapsulate equivalent code | SOP20,.4 | SOP20,.4 | DIP20,.3 | DIP20,.3 |
| Package shape | RECTANGULAR | RECTANGULAR | RECTANGULAR | RECTANGULAR |
| Package form | SMALL OUTLINE | SMALL OUTLINE | IN-LINE | IN-LINE |
| power supply | 5 V | 5 V | 5 V | 5 V |
| Prop。Delay @ Nom-Sup | 15 ns | 15 ns | 15 ns | 15 ns |
| propagation delay (tpd) | 15 ns | 15 ns | 15 ns | 15 ns |
| Certification status | Not Qualified | Not Qualified | Not Qualified | Not Qualified |
| Maximum supply voltage (Vsup) | 5.25 V | 5.25 V | 5.25 V | 5.25 V |
| Minimum supply voltage (Vsup) | 4.75 V | 4.75 V | 4.75 V | 4.75 V |
| Nominal supply voltage (Vsup) | 5 V | 5 V | 5 V | 5 V |
| surface mount | YES | YES | NO | NO |
| technology | TTL | TTL | TTL | TTL |
| Temperature level | COMMERCIAL | COMMERCIAL | COMMERCIAL | COMMERCIAL |
| Terminal surface | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) | Tin/Lead (Sn/Pb) |
| Terminal form | GULL WING | GULL WING | THROUGH-HOLE | THROUGH-HOLE |
| Terminal pitch | 1.27 mm | 1.27 mm | 2.54 mm | 2.54 mm |
| Terminal location | DUAL | DUAL | DUAL | DUAL |
| translate | N/A | N/A | N/A | N/A |
| package instruction | SOP, SOP20,.4 | SOP, SOP20,.4 | DIP, DIP20,.3 | - |