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SN54LS91J from TM

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SN54LS91J

Manufacturer: TM, TI

8-Bit Shift Registers

Partnumber Manufacturer Quantity Availability
SN54LS91J TM, TI 350 In Stock

Description and Introduction

8-Bit Shift Registers The SN54LS91J is a part manufactured by Texas Instruments (TM). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Logic Type:** 8-Bit Shift Register  
- **Technology Family:** LS (Low-Power Schottky)  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Operating Temperature Range:** -55°C to 125°C (Military Grade)  
- **Package Type:** Ceramic DIP (Dual In-Line Package)  
- **Number of Pins:** 14  
- **Output Type:** Standard  
- **Propagation Delay:** Typically 30ns  
- **Current - Output High, Low:** 400µA, 8mA  

### **Descriptions:**  
The SN54LS91J is an 8-bit serial-in/serial-out shift register designed for high-speed data transfer applications. It is part of the SN54LS series, which is characterized by low power consumption and high noise immunity. This device is suitable for military and aerospace applications due to its extended temperature range and rugged ceramic packaging.

### **Features:**  
- **Serial Input/Output:** Supports serial data shifting.  
- **High-Speed Operation:** Optimized for fast data transfer.  
- **Low Power Consumption:** Typical power dissipation of 45mW.  
- **Wide Operating Voltage:** Compatible with standard TTL levels.  
- **Military Temperature Range:** Reliable performance in harsh environments.  
- **Schottky Clamped:** Ensures fast switching and reduced propagation delay.  

This information is based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

8-Bit Shift Registers

Alternative Part Number

  • DM54LS91J --: Direct pin-compatible 54LS-series 4-bit shift register from the original LS logic family, same DIP package and function.
  • MC54LS91L --: Equivalent 54LS91 4-bit shift register in ceramic DIP, functionally and electrically interchangeable with the original.
  • SN74LS91N --: Same LS91 shift register function in the commercial 74-series temperature range; usable when the wider military temperature range is not required.
  • MC10191L --: Equivalent 4-bit magnitude comparator in the 10K ECL logic family, same function and DIP package, usable as a direct functional substitute.

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