規格
| 屬性 | 價值 |
| Supplier | Texas Instruments |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Type | Transceiver |
| Protocol | RS422, RS485 |
| Number of Drivers/Receivers | 1/1 |
| Duplex | Full |
| Receiver Hysteresis | 60 mV |
| Voltage - Supply | 4.75V ~ 5.25V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
概述
Description
The SN65ALS180DR is a Texas Instruments RS-485/RS-422 differential line transceiver (driver + receiver) in an 8-pin package. It enables two-wire, half‑duplex bus communication with separate driver enable (DE) and receiver enable (RE) controls and a tri‑state output. The receiver offers a fail‑safe RO output when the bus is idle or open. It is designed for multi-point industrial and building-automation networks and supports single-supply operation with differential A/B signaling. Data rates align with RS-485 standards (typically up to about 10 Mbps on suitable buses). The DR suffix denotes a specific packaging/variant from TI. For exact electrical specs (voltage range, data rate, propagation delay, enable timing, and pinout), consult the TI datasheet.
Equivalent
Direct cross-references for SN65ALS180DR (RS-485/RS-422 transceiver) vary by features. Closest equivalents:
- TI: SN65ALS180 (same device)
- TI close-refs: SN65HVD178, SN65HVD178A
- NXP: TJA1040, TJA1041
- Analog Devices: ADM2483, ADM2484
- Maxim: MAX485, MAX3485
- STMicro: SP3485, SP3486
Note: verify exact pinout, voltage, and speed in datasheets to ensure true drop-in replacement.
- TI: SN65ALS180 (same device)
- TI close-refs: SN65HVD178, SN65HVD178A
- NXP: TJA1040, TJA1041
- Analog Devices: ADM2483, ADM2484
- Maxim: MAX485, MAX3485
- STMicro: SP3485, SP3486
Note: verify exact pinout, voltage, and speed in datasheets to ensure true drop-in replacement.
Pinout
- Pin count: 28 pins (package suffix DR).
- Function: SN65ALS180DR is an 8-bit differential bus transceiver (RS-422/RS-485‑style) that interfaces between a CMOS/TTL input/output bus and a differential multi-wire bus, with bidirectional data and 3‑state outputs.
- Function: SN65ALS180DR is an 8-bit differential bus transceiver (RS-422/RS-485‑style) that interfaces between a CMOS/TTL input/output bus and a differential multi-wire bus, with bidirectional data and 3‑state outputs.
Manufacturer
- Manufacturer: Texas Instruments (TI).
- What kind of company: American multinational semiconductor company that designs and manufactures analog and embedded-processing integrated circuits.
- What kind of company: American multinational semiconductor company that designs and manufactures analog and embedded-processing integrated circuits.
Application
SN65ALS180DR is a differential RS-485/RS-422 transceiver. Typical application areas include:
- Industrial automation and process control networks (RS-485/RS-422 multi-point)
- Building automation (HVAC, lighting, security, smart meters)
- Data acquisition, instrumentation, and test equipment over twisted-pair cables
- Telecom/networking equipment requiring robust, long-distance serial links
- Any system needing noise-immune differential signaling and reliable multi-drop or point-to-point communication
- Industrial automation and process control networks (RS-485/RS-422 multi-point)
- Building automation (HVAC, lighting, security, smart meters)
- Data acquisition, instrumentation, and test equipment over twisted-pair cables
- Telecom/networking equipment requiring robust, long-distance serial links
- Any system needing noise-immune differential signaling and reliable multi-drop or point-to-point communication
Package
SOIC-20 package (20-pin small-outline, RoHS-compliant).
