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SN74ALS243AN from TI,Texas Instruments

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SN74ALS243AN

Manufacturer: TI

Quadruple Bus Transceivers With 3-State Outputs

Partnumber Manufacturer Quantity Availability
SN74ALS243AN TI 1020 In Stock

Description and Introduction

Quadruple Bus Transceivers With 3-State Outputs The SN74ALS243AN is a quad bus transceiver manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Logic Family:** ALS (Advanced Low-Power Schottky)  
- **Function:** Quad Bus Transceiver  
- **Number of Channels:** 4  
- **Supply Voltage (VCC):** 4.5V to 5.5V  
- **Operating Temperature Range:** 0°C to 70°C  
- **Package Type:** PDIP (Plastic Dual In-Line Package)  
- **Pin Count:** 20  
- **Output Type:** 3-State  
- **Propagation Delay:** Typically 9 ns (max 15 ns)  
- **Input/Output Compatibility:** TTL  

### **Descriptions:**  
The SN74ALS243AN is a bidirectional bus transceiver designed for asynchronous communication between data buses. It allows data to flow in both directions between two buses with separate enable controls for each direction.  

### **Features:**  
- **Bidirectional Data Flow:** Independent control pins for transmit and receive directions.  
- **3-State Outputs:** Allows multiple devices to share a common bus.  
- **High-Speed Operation:** Optimized for low-power, high-performance applications.  
- **TTL-Compatible Inputs/Outputs:** Ensures compatibility with standard TTL logic levels.  
- **ESD Protection:** Improved reliability with built-in electrostatic discharge protection.  

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

Application Scenarios & Design Considerations

Quadruple Bus Transceivers With 3-State Outputs

Alternative Part Number

  • 74ALS243APC --: Same 74ALS243A quad bus transceiver function with identical pinout and ALS logic family, from an alternate vendor.
  • MC74ALS243AN --: Direct functional equivalent quad bus transceiver in the ALS family with matching pin configuration.
  • DM74ALS243AN --: Pin-compatible ALS quad bus transceiver offering the same electrical characteristics as the original.
  • 74ALS243AN --: Same 74ALS243A quad bus transceiver function and pinout from an alternate vendor, drop-in compatible.
  • SN74ALS245AN --: Octal bus transceiver in the same ALS family and DIP package; widely available and functionally similar for bus interface use.
  • 74HC243 --: Quad bus transceiver with equivalent logic function; CMOS version offers lower power though timing and drive differ slightly.

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