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SN65HVD22P
DIP-8 (300mil)
The SN65HVD22P from TI is a 3.3V RS-485/RS-422 transceiver with 12Mbps data rate, 1/4 unit load, and bus-pin ESD protection in DIP-8 through-hole package.
| Package | DIP-8 (300mil) |
The SN65HVD22P from TI is a 3.3V RS-485/RS-422 transceiver with 12Mbps data rate, 1/4 unit load, and bus-pin ESD protection in DIP-8 through-hole package.
The SN65HVD22P is a 3.3V RS-485/RS-422 transceiver from Texas Instruments in DIP-8, supporting data rates up to 12Mbps. It provides half-duplex communication with separate driver and receiver enable pins (DE and RE). The DIP-8 package makes it suitable for prototyping and through-hole assembly. The driver output differential voltage is 1.5V minimum into a 54-ohm load (standard RS-485 compliance), and the driver propagation delay is 8ns at 12Mbps. The receiver input impedance is 1/4 unit load (96k-ohm), allowing up to 128 devices on the bus. The receiver fail-safe ensures R is HIGH when the bus is open or idle. The device provides +/-16kV HBM ESD protection on the bus pins (Y and Z). The common-mode range is -7V to +12V, suitable for noisy industrial environments. The driver outputs (Y, Z) and receiver inputs are on separate pins (vs the combined A/B pins on many RS-485 transceivers), allowing full-duplex (4-wire) operation when used as an RS-422 transceiver. In RS-485 half-duplex mode, Y and Z are typically connected to the bus alongside A and B of another transceiver. The supply current is 11mA active and 1uA in shutdown (DE=LOW, RE=HIGH). The device is designed for PROFIBUS, RS-485 multidrop, and RS-422 point-to-point communication. The -P suffix specifies DIP-8 package. The SN65HVD22 is a popular choice for 3.3V Arduino and Raspberry Pi RS-485 shields.
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | R | Output | Receiver output (to MCU UART RX, HIGH when A-B > 200mV) |
| 2 | RE | Input | Receiver enable (active LOW, LOW=enable receiver) |
| 3 | DE | Input | Driver enable (active HIGH, HIGH=enable driver) |
| 4 | D | Input | Driver data input (from MCU UART TX) |
| 5 | GND | Power | Ground |
| 6 | Y | Output | Driver non-inverting output (connects to RS-485 bus A) |
| 7 | Z | Output | Driver inverting output (connects to RS-485 bus B) |
| 8 | VCC | Power | Supply (3.0-3.6V, typical 3.3V) |
| Manufacturer | Part Number | Package | Notes |
|---|---|---|---|
| Texas Instruments | SN65HVD22DR | SOIC-8 | Same device, SOIC package |
| Texas Instruments | SN65HVD72DR | SOIC-8 | 3.3V, 250kbps version, lower EMI |
| Maxim | MAX3485ECSA+T | SOIC-8 | 3.3V RS-485, 10Mbps, ESD protected |
| Analog Devices | ADM3485EARZ | SOIC-8 | 3.3V RS-485, 12Mbps, similar |
| Renesas | ISL83070EIBZA-T | SOIC-8 | 3.3V RS-485, 20Mbps, enhanced ESD |
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
Brand:
Package:
Cargo cycle: 3~7 Days
The minimum order is 1
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