| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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220 pcs
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220 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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The CD74HCT191M from Texas Instruments is a high-speed CMOS logic counter. This 4-bit binary counter is asynchronously presettable and operates synchronously with the clock's low-to-high transition. It supports both up and down counting modes, controlled by the D/U input.
Key electrical characteristics include an operating voltage range of 4.5V to 5.5V and a maximum count rate of 30 MHz. The device is designed for a wide operating temperature range of -55°C to 125°C. Standard outputs can drive up to 15 LS-TTL loads, offering significant power reduction compared to LS-TTL logic.
Packaged in a 16-SOIC (Surface Mount) configuration, the CD74HCT191M is suitable for various digital logic applications. Its design allows for n-bit cascading using the MAX/MIN and RCO outputs for high-speed counting.
This counter is ideal for applications requiring precise counting sequences and synchronous operation. The asynchronous parallel load input allows for quick presetting of the counter to a desired number.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.38 | $0.38 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
4.5 V to 5.5 V for the HCT version.
16-SOIC (0.154", 3.90mm Width) surface mount package.
-55°C to 125°C.
30 MHz.
Yes, it can count in both up and down directions.
Positive edge triggered.
Synchronous.