SN75175N - 4-Channel 10 Mbps RS-485 Receiver | Texas Instruments
料号： SN75175N ✓ 量产中SN75175N 概述
A differential line receiver is an interface IC that converts two complementary, low-voltage signals into one digital logic signal. In the broader electronics hierarchy, the SN75175N is a line receiver within the interface IC category and specifically belongs to the family of differential bus transceivers. Its differential input arrangement helps reject common-mode noise encountered when a bus cable passes through electrically noisy industrial, communications, or automation environments.
The SN75175N integrates four receivers and provides three-state outputs for shared-bus or multi-drop systems. According to the Texas Instruments datasheet, the receiver supports signaling rates up to 10 Mbps and is designed for multipoint bus transmission over long bus lines in noisy environments. These features make it a practical choice when one host must collect data from multiple compatible transmitters over a balanced bus.
The 16-PDIP package provides through-hole accessibility for industrial controllers, test equipment, legacy communication systems, and prototype boards. The 4.75 V to 5.25 V operating range supports conventional 5 V digital logic. Because the outputs can enter a high-impedance state, designers can use them in shared-bus architectures, although the complete system must control output enable signals correctly to prevent multiple drivers from simultaneously driving a line.
Typical uses include RS-485 industrial monitoring, factory automation equipment, instrumentation, data acquisition systems, and legacy peripheral interfaces. The four independent receiver channels can reduce the number of discrete receiver packages required when a board handles several low-speed or medium-speed differential links. In each case, cable length, topology, termination, grounding, and common-mode limits must be evaluated together because receiver specifications alone do not determine reliable system operation.
For a new PCB, place each receiver close to the connector or transceiver interface and keep sensitive differential traces away from switching nodes and high-current paths. Use a common reference-ground strategy appropriate to the connected equipment. For an existing 16-PDIP design, verify every output-enable connection and input threshold against the source device before substituting a functionally similar receiver.
This page combines the SN75175N electrical identity, standards-oriented application guidance, package details, drop-in alternatives, and practical bus-design considerations to support faster component selection and PCB integration.
直接替换替代料： SN75175N ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
SN75173N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
SN75175BP
✅ 直接替换📋 参考替代料（不在目录中）
SN75179BPE4
✅ 直接替换📋 参考替代料（不在目录中）
SN75178BP
✅ 直接替换📋 参考替代料（不在目录中）
SN75175N 规格参数
| Receiver Type | Quad differential line receiver |
| Number of Receiver Channels | 4 channels |
| Maximum Signaling Rate | 10 Mbit/s |
| 工作电源电压 | 4.75 V to 5.25 V |
| Nominal Supply Voltage | 5 V |
| Output State | Three-state output |
| Supported Interface | RS-485, RS-422, RS-423 |
| 封装 | 16-pin plastic DIP (16-PDIP) |
| 安装类型 | Through-hole |
SN75175N 16-pin plastic dip (16-pdip) 引脚配置指南
SN75175N（16-pin plastic dip (16-pdip) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： SN75175N.
请参阅 数据手册 以查看完整引脚配置。
典型应用
SN75175N 适用于 6 应用s: Industrial RS-485 Monitoring, Factory Automation Data Acquisition, Instrumentation and Test Equipment, Communications Network Interfaces, Building and HVAC Control, Legacy Peripheral and Data Ports.
Industrial RS-485 Monitoring
The SN75175N fits industrial monitoring equipment that must receive several balanced bus signals in a noisy factory environment. Its four differential receiver channels allow one 16-PDIP package to handle up to four incoming data pairs, while the documented 10 Mbit/s capability supports a broad range of legacy industrial and automation links. Each input should follow the receiver's recommended termination and common-mode arrangements, with the bus ground and shield strategy coordinated across connected equipment. The main benefit is four integrated channels in a conventional through-hole package, reducing the number of separate receiver packages while preserving differential noise rejection.
推荐
Factory Automation Data Acquisition
The SN75175N is suitable for data-acquisition and factory-automation controllers that gather signals from multiple distributed field devices. Its four differential inputs can reduce receiver count when sensors, counters, or remote I/O modules present complementary logic signals over balanced wiring. Signaling rates up to 10 Mbit/s allow the receiver to participate in both moderate-speed and faster legacy industrial links, subject to the distance and noise limitations of the bus standard. Designers should separate the differential route from motors and relay contacts, use appropriate bus termination, and verify that every remote device remains within the receiver's common-mode operating range.
推荐
Instrumentation and Test Equipment
The SN75175N can serve as the receiving element in laboratory and field-test equipment that accepts differential outputs from instruments, fixtures, or remote measurement modules. The 16-PDIP package is convenient for through-hole prototyping, while four channels provide economical multi-channel reception without requiring four separate receiver ICs. Its 4.75 V to 5.25 V supply range aligns with conventional 5 V logic in older test platforms. For dependable measurements, minimize loop area on the differential inputs, maintain a controlled reference potential between connected devices, and avoid long unprotected stubs that can reflect signals or magnify switching noise.
推荐
Communications Network Interfaces
The SN75175N is appropriate for communications equipment that interfaces several balanced receive channels to 5 V digital logic. Four independent differential receivers and three-state outputs support parallel links, multi-drop arrangements, and shared-bus designs where valid output-enable control is maintained. The device's 10 Mbit/s maximum signaling rate accommodates many legacy serial network protocols, although protocol timing and cable loss still require separate evaluation. In a multi-drop system, ensure that only one node drives the bus at a time, apply termination only where the topology requires it, and use the manufacturer's electrical limits to select compatible line drivers.
推荐
Building and HVAC Control
The SN75175N can support building automation, HVAC controllers, and environmental monitoring systems that use balanced wiring between distributed panels. Four channels make it possible to consolidate several differential status or sensor inputs into one receiver package. Its three-state outputs help support shared-bus communication when enable timing is controlled correctly, and the 10 Mbit/s capability is more than adequate for many low-speed building-control networks. Route receiver traces away from relay contacts, contactors, and switching power stages, and establish a consistent grounding method for panels connected through long cables to prevent ground-potential differences from exceeding the interface limits.
推荐
Legacy Peripheral and Data Ports
The SN75175N is useful when upgrading or maintaining legacy peripheral systems that expose four differential receive channels to a host controller. The through-hole 16-PDIP package supports repair boards and industrial replacement designs, while the 4.75 V to 5.25 V operating range accommodates established 5 V logic platforms. The receiver can handle links operating up to 10 Mbit/s, subject to cable length and topology. Before fitting the device, confirm the original board's pin functions, output-enable polarity, input logic levels, and supply arrangement. This verification is particularly important when the replacement depends on unused or no-connect pins having a defined electrical state.
推荐
推荐产品汇总
工程参考数据： SN75175N ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | SN75173N | SN75175BP | SN75179BPE4 | SN75178BP |
|---|---|---|---|---|---|
| Package | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP | 16-PDIP |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Mounting Style | Through-hole | Through-hole | Through-hole | Through-hole | Through-hole |
关键差异点
- Four differential receivers in one package （对比 SN75173N)
- Established 10 Mbit/s receiver positioning （对比 SN75179BPE4)
- Three-state outputs for shared-bus control （对比 SN75178BP)
设计说明
Route each differential pair as a tightly coupled pair from the connector or transceiver to the receiver inputs. Keep the pair away from motor traces, relay contacts, inductors, and switching-node copper. A smaller separation between the two conductors reduces susceptibility to externally induced differential noise, while maintaining ground and chassis-shield connections according to the overall communication interface design.
Do not assume that any SN7517x-family receiver is automatically pin compatible. Verify the output-enable polarity and truth table, input logic thresholds, common-mode range, propagation delay, and behavior of no-connect pins. The SN75175N provides four differential channels with three-state outputs, so incorrect enable sequencing can place multiple outputs on a shared bus and prevent reliable communication even when the power and signal levels appear correct.
The documented operating supply range is 4.75 V to 5.25 V. Place the device's local supply-decoupling network close to its supply pins and keep the return path continuous through the same ground reference used by the receiver interface. Confirm that the surrounding system does not exceed the receiver's absolute maximum ratings during startup, power loss, or bus faults. Use the manufacturer pin description table to identify the relevant supply and ground connections.
For a multipoint RS-485 bus, apply termination according to the physical topology rather than at every node, and avoid long unused stubs that can produce reflections. The SN75175N supports signaling rates up to 10 Mbit/s, but achievable distance also depends on cable loss, noise, baud rate, and grounding. Validate the complete network with an oscilloscope at the receiver to check differential amplitude, common-mode range, edge quality, and the response to bus enable and disable transitions.
合规信息
The device is a conventional integrated circuit rather than an AEC-Q100-qualified automotive product. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from the current manufacturer product or quality documentation.
