The maximum operating frequency of the SN75C189NSR is 100 MHz, but it can be operated at higher frequencies with reduced voltage swing and increased power consumption.
To ensure reliable operation in high-temperature environments, it is recommended to derate the power consumption and voltage swing of the device, and to use a heat sink or thermal management system to keep the junction temperature below 150°C.
The recommended termination scheme for the SN75C189NSR is a 50-ohm resistive termination to VCC or GND, depending on the application. This helps to reduce reflections and improve signal integrity.
Yes, the SN75C189NSR can be used in differential signaling applications, but it requires a external differential amplifier or receiver to convert the single-ended output to a differential signal.
The SN75C189NSR has built-in ESD protection, but it is still recommended to use external ESD protection devices, such as TVS diodes or ESD arrays, to protect the device from electrostatic discharge.
SN75C189NSR datasheet
by Texas Instruments
