SN74LS191DE4
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- Mfr.Part #
- SN74LS191DE4
- Manufacturer
- Texas Instruments
- Package / Case
- 16-SOIC (0.154, 3.90mm Width)
- Datasheet
- Download
- Description
- IC SYNC 4-BIT UP/DN CNTR 16-SOIC
- Stock
- 2,653
- In Stock ：
- 2,653
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- Manufacturer :
- Texas Instruments
- Product Category :
- Counters, Dividers
- Logic Type :
- BINARY COUNTER
- Weight :
- 141.690917mg
- Number of Elements :
- 1
- Logic Function :
- Counter
- JESD-609 Code :
- e4
- Terminal Form :
- Gull wing
- Trigger Type :
- POSITIVE EDGE
- Pbfree Code :
- yes
- Additional Feature :
- TCO OUTPUT
- Lead Free :
- Contains Lead
- Operating Supply Voltage :
- 5.25V
- Family :
- LS
- Base Part Number :
- 74LS191
- Timing :
- SYNCHRONOUS
- Width :
- 3.91mm
- Number of Functions :
- 1
- RoHS Status :
- ROHS3 Compliant
- Number of Terminations :
- 16
- Prop. Delay@Nom-Sup :
- 52 ns
- Voltage - Supply :
- 4.75V~5.25V
- Factory Lead Time :
- 6 Weeks
- Length :
- 9.9mm
- Power Supplies :
- 5V
- Direction :
- Up, Down
- Thickness :
- 1.58mm
- Supply Voltage :
- 5V
- Propagation Delay (tpd) :
- 36 ns
- Mounting Type :
- Surface Mount
- Time@Peak Reflow Temperature-Max (s) :
- NOT SPECIFIED
- Terminal Position :
- Dual
- Qualification Status :
- Not Qualified
- Series :
- 74LS
- Moisture Sensitivity Level (MSL) :
- 1 (Unlimited)
- Peak Reflow Temperature (Cel) :
- 260
- Number of Pins :
- 16
- Height :
- 1.75mm
- Lifecycle Status :
- ACTIVE (Last Updated: 2 days ago)
- Load/Preset Input :
- yes
- fmax-Min :
- 20 MHz
- Operating Temperature :
- 0°C~70°C
- Packaging :
- Tube
- Package / Case :
- 16-SOIC (0.154, 3.90mm Width)
- Frequency :
- 25MHz
- Number of Bits per Element :
- 4
- Pin Count :
- 16
- Clock Edge Trigger Type :
- POSITIVE EDGE
- Terminal Finish :
- Nickel/Palladium/Gold (Ni/Pd/Au)
- Mount :
- Surface Mount
- Datasheets
- SN74LS191DE4
Counters, Dividers Texas Instruments SN74LS191DE4 Overview
The SN74LS191DE4 from Texas Instruments is a high-performance integrated circuit specifically designed for synchronous 4-bit up/down counting applications. This device is part of the LS logic family, renowned for its low power consumption and high reliability. The SN74LS191DE4 is housed in a 16-pin SOIC package, offering a compact solution for embedded systems. Ideal for demanding environments, this counter can operate across a wide range of temperatures and power conditions, making it an essential component for precision counting applications in industrial and commercial settings. The versatility and robustness of the SN74LS191DE4 make it a preferred choice for engineers looking to enhance system efficiency and reliability.
SN74LS191DE4 Features
The SN74LS191DE4 offers several key features that make it highly suitable for a wide range of applications. It includes features such as a fully synchronous system for up/down counting, outputs that can change state directly in response to its inputs, and a built-in lookahead carry capability. These features enable the device to perform high-speed counting operations reliably and efficiently. Additionally, its mode control allows for selectable up or down counting, which adds to its flexibility in deployment within different types of circuit configurations.
SN74LS191DE4 Applications
- Digital Clocks: Utilized in the timekeeping logic to manage hours, minutes, and seconds incrementation or decrementation.
- Frequency Counters: Applied to accurately count the number of occurrences of a particular event per unit of time in measurement devices.
- Event Counters: Employed in various scenarios to count events, such as the number of items produced on an assembly line.
- Process Controllers: Used to control operational sequences in automated processes, ensuring accurate task execution in accordance with the programmed order.
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