Texas Instruments · 74LS Series
Texas Instruments SN74LS645-1N, series 74LS, logic type Transceiver Non-Inverting, output 3-State, 8-bit, 1 element, supply 4.75V~5.25V, output current 15mA/48mA, through hole 20-DIP (0.300", 7.62mm), 20-PDIP, operating temperature 0°C~70°C, tube.
MOQ 1 · Tube · RoHS · EIA-481 · DAP/DDP · T/T
| Parameter / Attribute | Specification / Value |
|---|---|
| Series | 74LS |
| Logic type | Transceiver, Non-Inverting |
| Output type | 3-State |
| Mounting | Through Hole |
| Supply voltage | 4.75V ~ 5.25V |
| Current - output high, low | 15mA, 48mA |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tube |
| Case | 20-DIP (0.300\", 7.62mm) |
| Number of elements | 1 |
| Number of bits per element | 8 |
The 15mA high-level and 48mA low-level output currents are typical for 74LS transceivers. The asymmetric sink-to-source ratio means the part can drive a heavier load when pulling a line low — useful for bus architectures where the low state is the active drive. The 3-state outputs allow multiple transceivers to share a common data bus without contention, controlled by the output-enable pins.
Not specified for automotive or extended industrial use.
