The SN74LS90DR is a 4-bit synchronous counter from Texas Instruments, operating at a maximum frequency of 42MHz. It is designed to work with a supply voltage of 5V and is packaged in a lead-free SOIC-14 package. The counter has a propagation delay of 50ns and is RoHS compliant. It is suitable for use in a temperature range of 0°C to 70°C.
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Texas Instruments SN74LS90DR technical specifications.
| Package/Case | SOIC |
| Clock Edge Trigger Type | Negative Edge |
| Direction | Up, Unidirectional |
| Frequency | 42MHz |
| Lead Free | Lead Free |
| Logic Function | Counter |
| Max Operating Temperature | 70°C |
| Min Operating Temperature | 0°C |
| Max Supply Voltage | 5.25V |
| Min Supply Voltage | 4.75V |
| Mount | Surface Mount |
| Number of Bits | 4 |
| Number of Bits per Element | 4 |
| Number of Elements | 1 |
| Operating Supply Voltage | 5V |
| Package Quantity | 2500 |
| Packaging | Tape and Reel |
| Propagation Delay | 50ns |
| Reset | Asynchronous |
| RoHS Compliant | Yes |
| Series | 74LS |
| Technology | BIPOLAR |
| Weight | 0.004564oz |
| RoHS | Compliant |
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