| Part Number | SN74LS641N | SN74LS642N | 
|---|---|---|
| Manufacturer | onsemi | Texas Instruments | 
| Category | Logic - Buffers, Drivers, Receivers, Transceivers | Logic - Buffers, Drivers, Receivers, Transceivers | 
|   |   | |
| Product Status | Obsolete | Active | 
| Logic Type | Transceiver, Non-Inverting | Transceiver, Inverting | 
| Number of Elements | 1 | 1 | 
| Number of Bits per Element | 8 | 8 | 
| Input Type | - | - | 
| Output Type | Open Collector | Open Collector | 
| Current - Output High, Low | -, 24mA | -, 24mA | 
| Voltage - Supply | 4.75V ~ 5.25V | 4.75V ~ 5.25V | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | 20-DIP (0.300", 7.62mm) | 20-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 20-PDIP | 20-PDIP |