Interface and Isolation

Q&A How can I measure the 5kΩ internal termination resistor of the MAX232A?

Products Mentioned

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

Thread Details

State Not Answered
Replies 1 reply
Subscribers 34 subscribers
Views 290 views
Users 0 members are here

Options

How can I measure the 5kΩ internal termination resistor of the MAX232A?

miky

on Jun 12, 2024

Category: Hardware

Product Number: MAX232A

Hello.

I have a question.

How can I measure the 5kΩ internal termination resistor of the MAX232A?

Best regards.

hardware MAX232A product

seanl

on Jun 13, 2024 1:29 PM
0
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.
Cancel
Up 0 Down

Reply

Verify Answer

Cancel