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| Part Number | CD74HC191M | CD74HC193M | CD74HC191MT | CD74HC161M | CD74HC191E |
|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Harris Corporation | Texas Instruments | Harris Corporation | Texas Instruments |
| Product Status | Active | Obsolete | Active | Obsolete | Active |
| Logic Type | Binary Counter | Binary Counter | Binary Counter | Binary Counter | Binary Counter |
| Direction | Up, Down | Up, Down | Up, Down | Up | Up, Down |
| Number of Elements | 1 | 1 | 1 | 1 | 1 |
| Number of Bits per Element | 4 | 4 | 4 | 4 | 4 |
| Reset | - | Asynchronous | - | Asynchronous | - |
| Timing | Synchronous | Synchronous | Synchronous | Synchronous | Synchronous |
| Count Rate | 35 MHz | 29 MHz | 35 MHz | 24 MHz | 35 MHz |
| Trigger Type | Positive Edge | Positive Edge | Positive Edge | Negative Edge | Positive Edge |
| Voltage - Supply | 2 V ~ 6 V | 2 V ~ 6 V | 2 V ~ 6 V | 2 V ~ 6 V | 2 V ~ 6 V |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Through Hole |
| Package / Case | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-SOIC | 16-SOIC | 16-SOIC | 16-SOIC | 16-PDIP |
