Overview
The SN75HVD12D, produced by Texas Instruments, is a 3.3-V differential transceiver designed for balanced transmission lines. It operates in compliance with ANSI standard TIA/EIA-485-A and ISO 8482:1993, making it suitable for multipoint bus-transmission lines. This device combines a 3-state differential line driver and a differential input line receiver, enabling bidirectional data communication. It features a single 3.3-V power supply and is available in an SOIC package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage | –0.3 to 6 | V |
| Signaling Rate | 1 Mbps | |
| Unit Load | 1/8 | |
| Operating Temperature Range | –0°C to 70°C | °C |
| Junction Temperature | 145 | °C |
| Bus-Pin ESD Protection | 16 kV HBM | |
| Bus-Pin Short-Circuit Protection | –7 V to 12 V | V |
| Standby Supply Current | 1 µA (typical) | A |
| Differential Load Resistance | 54 to 60 | Ω |
| Differential Load Capacitance | 50 | pF |
Key Features
- Operates with a single 3.3-V power supply
- Bus-pin ESD protection exceeds 16-kV HBM
- 1/8 Unit-load option available (up to 256 nodes on the bus)
- Optional driver output transition times for signaling rates of 1 Mbps, 10 Mbps, and 32 Mbps
- Meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993
- Bus-pin short-circuit protection from –7 V to 12 V
- Low-current standby mode: 1 µA, typical
- Open-circuit, idle-bus, and shorted-bus fail-safe receiver
- Thermal shutdown protection
- Glitch-free power-up and power-down protection for hot-plugging applications
Applications
- Digital motor control
- Utility meters
- Chassis-to-chassis interconnects
- Electronic security stations
- Industrial process control
- Building automation
- Point-of-sale (POS) terminals and networks
Q & A
- What is the operating voltage of the SN75HVD12D?
The SN75HVD12D operates with a single 3.3-V power supply. - What is the signaling rate of the SN75HVD12D?
The signaling rate of the SN75HVD12D is 1 Mbps. - What is the unit load of the SN75HVD12D?
The unit load of the SN75HVD12D is 1/8. - What is the operating temperature range of the SN75HVD12D?
The operating temperature range of the SN75HVD12D is –0°C to 70°C. - Does the SN75HVD12D have ESD protection?
Yes, the SN75HVD12D has bus-pin ESD protection that exceeds 16-kV HBM. - What kind of short-circuit protection does the SN75HVD12D have?
The SN75HVD12D has bus-pin short-circuit protection from –7 V to 12 V. - What is the standby supply current of the SN75HVD12D?
The standby supply current of the SN75HVD12D is 1 µA (typical). - Does the SN75HVD12D support hot-plugging?
Yes, the SN75HVD12D has glitch-free power-up and power-down protection for hot-plugging applications. - What standards does the SN75HVD12D comply with?
The SN75HVD12D meets or exceeds the requirements of ANSI TIA/EIA-485-A and ISO 8482:1993. - What are some common applications of the SN75HVD12D?
Common applications include digital motor control, utility meters, chassis-to-chassis interconnects, electronic security stations, industrial process control, building automation, and point-of-sale (POS) terminals and networks.
