Plug-In Replacement for SN75107A and

SN75107B With Improved Characteristics

±10-mV Input Sensitivity

TTL-Compatible Circuitry

Standard Supply Voltages . . . ±5 V

Differential Input Common-Mode Voltage

Range of ±3 V

Strobe Inputs for Channel Selection

Totem-Pole Outputs

SN75207B Has Diode-Protected Input Stage

for Power-Off Condition

Sense Amplifier for MOS Memories

Dual Comparator

High-Sensitivity Line Receiver

description

The SN75207B is a terminal-for-terminal replacement for the SN75107B. The improved input sensitivity makes

it more suitable for MOS memory sense amplifiers and can result in faster memory cycles. Improved sensitivity

also makes it more useful in line-receiver applications by allowing use of longer transmission line lengths. The

SN75207B features a TTL-compatible, active-pullup output.

Input protection diodes are in series with the collectors of the differential-input transistors of the SN75207B.

These diodes are useful in certain party-line systems that may have multiple VCC+ power supplies and may be

operated with some of the VCC+ supplies turned off. In such a system, if a supply is turned off and allowed to

go to ground, the equivalent input circuit connected to that supply would be as follows:

This would be a problem in specific systems that might have the transmission lines biased to some potential

greater than 1.4 V.

This device is characterized for operation from 0°C to 70°C.