74F191PC
- Mfr.Part #
- 74F191PC
- Manufacturer
- National Semiconductor
- Package / Case
- 16-DIP (0.300, 7.62mm)
- Datasheet
- Download
- Description
- IC COUNTER DECADE UP/DOWN 16-DIP
- Stock
- 16,235
- In Stock :
- 16,235
Request A Quote(RFQ)
- * Fullname:
- * Company:
- * E-Mail:
- Phone:
- Comment:
- * Quantity:
- Manufacturer :
- National Semiconductor
- Product Category :
- Counters, Dividers
- Propagation Delay :
- 11 ns
- Lead Free :
- Lead Free
- Number of Output Lines :
- 4
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Min Supply Voltage :
- 4.5V
- Count Rate :
- 100MHz
- Number of Input Lines :
- 4
- Frequency :
- 125MHz
- Base Part Number :
- 74F191
- Mounting Type :
- Through Hole
- Series :
- 74F
- RoHS Status :
- RoHS Compliant
- Max Supply Voltage :
- 5.5V
- Direction :
- Up, Down
- Clock Edge Trigger Type :
- POSITIVE EDGE
- Number of Circuits :
- 1
- Voltage - Supply :
- 4.5V~5.5V
- Trigger Type :
- POSITIVE EDGE
- Packaging :
- Tube
- Sync/Async :
- SYNCHRONOUS
- Number of Bits :
- 4
- REACH SVHC :
- Unknown
- Logic Type :
- BINARY COUNTER
- Package / Case :
- 16-DIP (0.300, 7.62mm)
- Number of Pins :
- 16
- Turn On Delay Time :
- 22 ns
- Operating Temperature :
- 0°C~70°C
- Mount :
- Through Hole
- Published :
- 2007
- Number of Elements :
- 1
- Timing :
- SYNCHRONOUS
- Number of Bits per Element :
- 4
- Logic Function :
- Counter
- Supplier Device Package :
- 16-PDIP
- Min Operating Temperature :
- 0°C
- Max Operating Temperature :
- 70°C
- Datasheets
- 74F191PC

Counters, Dividers National Semiconductor 74F191PC Overview
The National Semiconductor 74F191PC is a high-performance, up/down decade counter, encapsulated in a 16-pin dual inline package (DIP). Designed for precision counting applications, this integrated circuit (IC) from National Semiconductor offers robust versatility in digital logic circuits. The ability to count both up and down allows for a wide range of applications, from simple counting solutions to more complex computing systems. Engineered with the needs of modern digital systems in mind, the 74F191PC provides a reliable foundation for designing advanced counting mechanisms, making it an essential component for businesses requiring bulk purchasing of dependable and flexible counting solutions.
74F191PC Features
The 74F191PC counter features dual counting modes, enabling it to count both upwards and downwards efficiently. It includes a built-in carry look-ahead for cascading counters together in high-speed computing environments, thus allowing for extended counting ranges with minimal delay. The device operates over a standard voltage range and is compatible with TTL (Transistor-Transistor Logic) levels, making it highly adaptable in various technological setups.
74F191PC Applications
- Digital clocks: Integrates into digital clock systems to manage timekeeping and alarm functionalities.
- Event counters: Utilized in devices that count occurrences of events, such as ticketing machines or attendance systems.
- Frequency counters: Essential in frequency measurement instruments used in communications and lab equipment.
- Data processing systems: Plays a critical role in data systems requiring precise operations count for processing and computations.
- Manufacturing systems: Aids in tracking production counts in automated manufacturing lines, ensuring accuracy and efficiency.
You may place an order without registering to Chip IC. We strongly recommend that you log in before purchasing as you can track your order at any time.
RFQ (Request for Quotations)It is recommended to send RFQ to get the latest prices and stock availability about the part.Our sales will reply to your inquiry within 24 hours.
Payment MethodFor your convenience, we accept multiple payment methods in USD, Such as:PayPal, Credit Card, and wire transfer.
IMPORTANT NOTICEYou may place an order without registering to 1. You'll receive an order confirmations by e-mail soon . (Please remember to check the spam box if you didn't hear from us). 2. Since stock availability and prices may change at any time, the sales will reconfirm the order details and update you at soonest time.
Most of our products are shipped via FEDEX,DHL,UPS and SF EXPRESS...
Shipping CostShipping Cost starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).If customer have shipping account, we can make shipment under customer’s shipping account with freight collect directly.
The basic freight (for package ≤0.5 KG ) depends on the time zones and countries
Once the goods are shipped, estimated delivery time depends on the shipping methods you chose. You can track it by the tracking no.
















