Datasheet

Overview

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1 Overview

These devices have robust 3.3-V drivers and receivers in a small package for demanding industrial

applications. The bus pins are robust to ESD events, with high levels of protection to Human-Body Model

and IEC Contact Discharge specifications. These devices each combine a differential driver and a

differential receiver, which operate from a single 3.3-V power supply.The driver differential outputs and the

receiver differential inputs are connected internally to form a bus port suitable for half-duplex (two-wire

bus) communication. These devices all feature a wide common-mode voltage range making the devices

suitable for multi-point applications over long cable runs. These devices are characterized from -40°C to

125°C.

NOTE: The EVM board comes with the SN65HVD75 (20 Mbps) device soldered on the board. The EVM

kit comes with an IC sample pack that includes one SN65HVD72 (250 kbps) device and one SN65HVD78

(50 Mbps) device. Either device can be evaluated by replacing the SN65HVD75 with the desired speed

grade device.

2 EVM Setup and Precautions

Figure 1 shows the schematic of the EVM. The EVM board has headers labeled from JMP1 to JMP14

(JMP5 is omitted) and two 3-pin terminal blocks labeled TB1 and TB2. These headers support device

evaluation for a wide range of system configurations.

• Pin 1 (EARTH) is a second ground pin that allows applying an external voltage between GND and

EARTH to simulate common-mode voltage conditions.

• Pin 2 (GND) is connected to the negative output or ground terminal of the PSU. This pin represents the

ground potential of the device-under-test and the entire EVM. It also connects to various jumpers on

the board.

• Pin 3 (VCC) is connected to the positive output of a regulated 3.3-V power supply unit (PSU) as it

represents the positive supply voltage of the device-under-test and also connects to various jumpers

on the board.

SN65HVD7xEVM Evaluation Module SLLU162–March 2012

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