Quad Differential Line Driver

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iC-HD7 is a robust line driver for industrial 5 V and 24 V applications with four complementary output channels.

For signal lines with a characteristic impedance of 30 to 140 the integrated line adapter, optimized to 75, minimizes ringing effects which arise when there is no line termination.

At a supply of 24 V the push-pull driver stages typically provide 200mA to discharge the line and also have a low saturation voltage (of typically 200mV with a 40mA low-side load). The outputs are current limited and short-circuit-proof, shutting down with excessive temperature.

For bus applications the driver stages can be switched to high impedance by a high at input NEN. The driver stage inputs have a Schmitt trigger characteristic and are compatible with CMOS and TTL levels.

For test purposes the temperature monitor can be deactivated by applying a voltage of greater than 12 V to input NEN.

The device contains internal ESD protection circuitry.

iC-Haus IC_HD7_001


• Line drivers for 24 V control engineering
• Linear scales and encoders
• Sensor systems

Symmetry Electronics (and its e-commerce division: SemiconductorStore.com) is an authorized iC-Haus distributor.


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Complementary short-circuit-proof push-pull driver stages for RS422 and 24 V applications up to 2MHz
Pin-compatible to 26LS31, xx7272
Integrated line adaptation for high signal quality at 24V
Moderate slew rate reduces EMI
High driving capability of typically 200mA at 24V
Output saturation of just 0.3 V at 40 mAdc
Tristate function for bus applications with excessive temperature shutdown
TTL-/CMOS-compatible Schmitt trigger inputs, voltage-proof to 40 V
4.5 to 35 V single supply operation with low static power dissipation
Operating temperature from -25 to 125 C (-40 C is optional)

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Quad Differential Line Driver
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Quad Differential Line Driver