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| Part Number | CD74HC191E | CD74HC191M | CD74HC192E | CD74HC193E | CD74AC191E | CD74HC161E | CD74HC190E |
|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Product Status | Active | Active | Active | Active | Active | Active | Active |
| Logic Type | Binary Counter | Binary Counter | Counter, Decade | Binary Counter | - | Binary Counter | Counter, Decade |
| Direction | Up, Down | Up, Down | Up, Down | Up, Down | - | Up | Up, Down |
| Number of Elements | 1 | 1 | 1 | 1 | - | 1 | 1 |
| Number of Bits per Element | 4 | 4 | 4 | 4 | - | 4 | 4 |
| Reset | - | - | Asynchronous | Asynchronous | - | Asynchronous | - |
| Timing | Synchronous | Synchronous | Synchronous | Synchronous | - | Synchronous | Synchronous |
| Count Rate | 35 MHz | 35 MHz | 24 MHz | 29 MHz | - | 24 MHz | 35 MHz |
| Trigger Type | Positive Edge | 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 | 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 | -55°C ~ 125°C |
| Mounting Type | Through Hole | Surface Mount | Through Hole | Through Hole | - | Through Hole | Through Hole |
| Package / Case | 16-DIP (0.300", 7.62mm) | 16-SOIC (0.154", 3.90mm Width) | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) | - | 16-DIP (0.300", 7.62mm) | 16-DIP (0.300", 7.62mm) |
| Supplier Device Package | 16-PDIP | 16-SOIC | 16-PDIP | 16-PDIP | - | 16-PDIP | 16-PDIP |
