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74LS191 from FUJITSU,Fujitsu Microelectronics

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74LS191

Manufacturer: FUJITSU

Synchronous 4-Bit Up/Down Counter with Mode Control

Partnumber Manufacturer Quantity Availability
74LS191 FUJITSU 38 In Stock

Description and Introduction

Synchronous 4-Bit Up/Down Counter with Mode Control The 74LS191 is a 4-bit synchronous up/down binary counter manufactured by Fujitsu. It features synchronous counting, parallel load, and up/down counting modes. The device operates with a typical power supply voltage of 5V and has a maximum clock frequency of 25 MHz. It is available in a 16-pin DIP (Dual In-line Package) and is designed for use in various digital counting applications. The 74LS191 is part of the 74LS series of logic ICs, which are known for their low power consumption and compatibility with TTL (Transistor-Transistor Logic) levels.
Partnumber Manufacturer Quantity Availability
74LS191 50 In Stock

Description and Introduction

Synchronous 4-Bit Up/Down Counter with Mode Control The 74LS191 is a 4-bit synchronous up/down binary counter manufactured by Texas Instruments. It features synchronous counting, asynchronous parallel load, and up/down counting modes. Key specifications include:

- **Supply Voltage (VCC):** 4.75V to 5.25V
- **Operating Temperature Range:** 0°C to 70°C
- **Maximum Clock Frequency:** 25 MHz
- **Power Dissipation:** 45 mW (typical)
- **Input High Voltage (VIH):** 2V (min)
- **Input Low Voltage (VIL):** 0.8V (max)
- **Output High Voltage (VOH):** 2.7V (min)
- **Output Low Voltage (VOL):** 0.5V (max)
- **Package Options:** 16-pin DIP, SOIC

It is commonly used in digital systems for counting and control applications.

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