IC Phoenix logo

Home ›  S  › S46 > SN54LS669J

SN54LS669J from TI,Texas Instruments

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

SN54LS669J

Manufacturer: TI, TM

SYNCHRONOUS 4-BIT UP/DOWN COUNTER
Partnumber Manufacturer Quantity Availability
SN54LS669J TI, TM 150 In Stock

Description and Introduction

SYNCHRONOUS 4-BIT UP/DOWN COUNTER The SN54LS669J is a synchronous 4-bit up/down counter manufactured by Texas Instruments (TM).  

### **Specifications:**  
- **Logic Family:** LS (Low-Power Schottky)  
- **Package Type:** Ceramic DIP (Dual In-line Package)  
- **Operating Temperature Range:** -55°C to +125°C (Military-grade)  
- **Supply Voltage Range:** 4.5V to 5.5V  
- **Counting Modes:** Up or Down (selectable)  
- **Clock Input:** Synchronous (positive-edge triggered)  
- **Maximum Clock Frequency:** 25 MHz (typical)  
- **Output Type:** Standard TTL (Totem-Pole)  
- **Number of Bits:** 4  
- **Load Capability:** 10 LS-TTL Loads  

### **Descriptions and Features:**  
- **Synchronous Operation:** All flip-flops are clocked simultaneously.  
- **Parallel Load Capability:** Allows presetting the counter to a desired value.  
- **Carry Lookahead:** Provides fast carry propagation for high-speed counting.  
- **Up/Down Control:** A single input determines counting direction.  
- **Ripple Clock Output:** Enables cascading multiple counters.  
- **Military-Grade Reliability:** Designed for harsh environments.  

This device is commonly used in digital systems for frequency division, event counting, and timing applications.

Application Scenarios & Design Considerations

SYNCHRONOUS 4-BIT UP/DOWN COUNTER

Alternative Part Number

  • CD74HC669E --: Same 8-bit magnitude comparator function in the 74-series family, CMOS version with similar pinout and logic, suitable drop-in for many designs.
  • MC74HC669N --: Second-source 8-bit identity comparator with equivalent function and pin configuration, widely available alternative to the LS669.
  • 74F669PC --: Faster bipolar 8-bit comparator from the 74F series, functionally compatible with the LS669 and usable where higher speed is acceptable.
  • M38510/37101BEA --: MIL-PRF-38510 qualified 4-bit up/down counter, functionally equivalent to the 54LS669 and available in a J-lead ceramic DIP package.
  • 5962-8686101EA --: SMD-standard equivalent of the 54LS669 counter, same LS TTL logic family and pinout, suitable as a direct drop-in replacement.
  • MC54LS669J --: Second-source 54LS669 counter from Motorola with identical function and pinout, usable as a cross-manufacturer alternative.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips