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ET7273C

QUAD DIFFERENTIAL LINE DRIVER IC WITH OPEN-COLLECTOR OUTPUTS AND ENABLE FUNCTION

These line drivers are similar in function to the ET7272, only in an open-collector format. The VCC pin powers the internal logic only. Output voltage is dependent on the customer supplied voltage, up to a maximum of 30V. There is essentially no difference in output swing or performance with VCC (LOGIC) values from 3.5V-30V. Internal clamp diodes allow trouble-free operation when driving cable lengths exceeding 100 meters. The outputs are protected by initiating shutdown when junciton temperatures exceed safe limits. This feature assures highly reliable operation in harsh environments. Heat sinking is aided by having pin 8 directly connected to the ASIC substrate inside the package. The rev ā€˜Cā€™ version reduced the high level enable current.