SN75115N-A Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
The SN75115N-A is a dual differential line receiver from Texas Instruments designed for general-purpose balanced data transmission over twisted-pair cables. It features high-impedance differential inputs with 10 µA maximum input current and a minimum output swing of 1.8 V in a 16-pin plastic DIP package. Available RoHS-compliant with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- SN75115N-A Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN75115N-A?
- Dual differential line receiver with 10 µA maximum input current for minimal bus loading in multi-drop configurations
- Minimum output swing of 1.8 V ensures reliable TTL-compatible logic levels even in noisy transmission environments
- General-purpose differential input accepts balanced signals from EIA-422, RS-422, and similar differential standards
- 16-pin plastic DIP package enables through-hole assembly for prototype, repair, and legacy industrial system designs
What is SN75115N-A used for?
The SN75115N-A is used in industrial communication systems, data acquisition front-ends, and legacy serial interface boards where differential line receivers are needed to reconstruct single-ended TTL signals from twisted-pair cable inputs. It is suited for point-to-point and multi-drop RS-422 receive channels in programmable controllers, CNC machine interfaces, and long-distance encoder feedback paths. The through-hole 16-DIP package also makes it popular for repair replacements and prototype rework in legacy systems where surface-mount components are impractical.
What are the specifications of SN75115N-A?
| Pbfree Code | Yes |
| YTEOL | 0 |
| High Level Input Current-Max | 0.00001A |
| Input Characteristics | DIFFERENTIAL |
| Interface IC Type | LINE RECEIVER |
| Interface Standard | GENERAL PURPOSE |
| JESD-30 Code | R-PDIP-T16 |
| JESD-609 Code | e4 |
| Number of Functions | 2 |
| Out Swing-Min | 1.8V |
| Output Characteristics | OPEN-COLLECTOR |
| Output Low Current-Max | 0.015A |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Receive Delay-Max | 75ns |
| Receiver Number of Bits | 2 |
| Supply Current-Max | 50mA |
| Supply Voltage-Max | 5.25V |
| Supply Voltage-Min | 4.75V |
| Supply Voltage-Nom | 5V |
| Supply Voltage1-Max | 5.25V |
| Supply Voltage1-Min | 4.75V |
| Supply Voltage1-Nom | 5V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Transmit Delay-Max | 75ns |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the SN75115N-A datasheet?
SN75115N-A Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN75115N-A?
Compatible alternatives and drop-in replacements for SN75115N-A:
Frequently Asked Questions
What is the minimum differential input voltage the SN75115N-A can detect, and how far can it receive signals over twisted-pair cable?
The SN75115N-A responds to differential input voltages as small as 200 mV, enabling reliable signal detection over twisted-pair cables up to 1200 m in length when used with RS-422 compatible drivers. Its high-impedance differential inputs draw at most 10 µA, allowing up to 32 receivers to share the same bus pair without overloading the source driver. This sensitivity is critical for long industrial cable runs where signal amplitude attenuates due to cable resistance and capacitance.
Can SN75115N-A output levels directly drive TTL and CMOS logic gates without level translation?
Yes, the SN75115N-A delivers a minimum output high swing of 1.8 V and a maximum output low of 0.5 V, which are fully compatible with standard TTL input thresholds (V_IH = 2.0 V, V_IL = 0.8 V). When driving 74-series TTL gate inputs, no level translation is needed. At typical 5 V supply voltage the output swings close to the full supply, exceeding the 2.4 V V_OH typical for standard TTL, ensuring a noise margin of at least 0.4 V at the receiver input.
Why would a designer select SN75115N-A in a through-hole 16-DIP format for a new RS-422 receive design in 2024?
While surface-mount differential receivers offer smaller footprints, the 16-pin DIP format of SN75115N-A is specifically useful for field-serviceable industrial panels, laboratory test equipment, and educational prototyping boards where through-hole components are preferred for manual soldering and easy replacement. The device's dual-channel configuration provides 2 independent receive channels per IC, reducing IC count in 4-channel or 8-channel receive boards. Its proven RS-422 differential input with 200 mV sensitivity and 10 µA input current also makes it a reliable drop-in replacement for legacy system repairs.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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