Hello.
I have a question.
How can I measure the 5kΩ internal termination resistor of the MAX232A?
Best regards.
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MAX232A
Production
The MAX220–MAX249 family of line drivers/receivers is intended for all EIA/TIA-232E and V.28/V.24 communications interfaces, particularly applications...
Datasheet
MAX232A on Analog.com
The MAX232A also has a 3kohm to 7kohm receiver input impedance (5k ohm typical) to ground. With the chip or board unpowered you can use an ohmeter feature in a standard DMM to measure this between the chip pin / pad and GND.
The MAX232A also has a 3kohm to 7kohm receiver input impedance (5k ohm typical) to ground. With the chip or board unpowered you can use an ohmeter feature in a standard DMM to measure this between the chip pin / pad and GND.