These devices contain four independent 2-input NAND buffer gates with open-collector outputs. The open-collector outputs require pull-up resistors to perform correctly. They may be connected to other open-collector outputs to implement active-low wired-OR or active-high wired-AND functions. Open-collector devices are often used to generate high VOH levels.
The SN5438, SN54LS38, and SN54S38 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN7438, SN74LS38, and SN74S38 are characterized for operation from 0°C to 70°C.
| Technology family | TTL |
| Supply voltage (min) (V) | 4.5 |
| Supply voltage (max) (V) | 5.5 |
| Number of channels | 4 |
| Inputs per channel | 2 |
| IOL (max) (mA) | 0 |
| IOH (max) (mA) | -48 |
| Input type | Bipolar |
| Output type | Open-collector |
| Features | High speed (tpd 10- 50ns) |
| Data rate (max) (Mbps) | 70 |
| Rating | Military |
| Operating temperature range (°C) | -55 to 125 |
| CDIP (J) | 14 | 130.4652 mm² 19.56 x 6.67 |
| CFP (W) | 14 | 58.023 mm² 9.21 x 6.3 |
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