ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：MAGNITUDE COMPARATOR
- Series：*
- Mfr：Texas Instruments
- Package：Bulk
- Type：-
- Number of Bits：-
- Output：-
- Output Function：-
- Voltage - Supply：-
- Current - Output High, Low：-
- Max Propagation Delay @ V, Max CL：-
- Current - Quiescent (Iq)：-
- Operating Temperature：-
- Package / Case：-
- Supplier Device Package：-
- Mounting Type：-
- Grade：-
- Qualification：-
Download product information
Overview
The SN74LS685N is an 8-bit magnitude and identity comparator manufactured by Texas Instruments. It operates within a standard voltage range of 4.75 V to 5.25 V and supports through-hole mounting in a 20-pin PDIP package. The device features four independent outputs: Greater Than (A>B), Less Than (A<B), Equal (A=B), and Cascading Outputs (AGB, ALB). Designed for the LS logic family, it provides high-speed digital comparison capabilities suitable for arithmetic logic units and data processing systems.
Feature Summary
- Performs simultaneous 8-bit magnitude and identity comparisons between two binary words
- Provides dedicated outputs for greater than, less than, and equal conditions
- Includes cascading inputs and outputs to facilitate expansion beyond 8 bits
Applications
- Digital arithmetic logic units requiring magnitude evaluation
- Data processing systems performing equality checks
- Control circuits utilizing binary word comparison
Procurement Notes
Verify the specific suffix 'N' confirms the 20-pin PDIP package variant. Confirm the manufacturer is Texas Instruments to ensure compatibility with LS logic specifications. Check for active production status as legacy components may have limited availability or obsolescence notices from the supplier.
Selection Notes
Select this component when an 8-bit parallel comparison is required without external wiring complexity. Ensure the system operates at 5V logic levels compatible with the LS series. Consider pin count and package size constraints against available PCB real estate for the 20-pin DIP form factor.
Part Context
This part belongs to the Texas Instruments 74LS series of bipolar logic devices. It functions specifically as a magnitude comparator, distinguishing itself from basic gates by handling multi-bit binary inputs. The SN74LS685N is designed for industrial and commercial temperature ranges, offering reliable performance in standard digital environments.
Replacement Considerations
Check for equivalent parts such as the SN74LS685DW for surface mount requirements. Verify pinout compatibility before substituting with other 8-bit comparators from different manufacturers.
