| Part Number | SN74LS191N | SN74LS191D |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Category | Logic - Counters, Dividers | Logic - Counters, Dividers |
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| Product Status | Active | Active |
| Logic Type | Binary Counter | Binary Counter |
| Direction | Up, Down | Up, Down |
| Number of Elements | 1 | 1 |
| Number of Bits per Element | 4 | 4 |
| Reset | - | - |
| Timing | Synchronous | Synchronous |
| Count Rate | 25 MHz | 25 MHz |
| Trigger Type | Positive Edge | Positive Edge |
| Voltage - Supply | 4.75 V ~ 5.25 V | 4.75 V ~ 5.25 V |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Through Hole | Surface Mount |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) |
| Supplier Device Package | 16-PDIP | 16-SOIC |