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Schematic for constructing a level converter for use with Winpep

WinpepLevelConverter.gif (9570 bytes)

 

ParallaxProgramerDiag.gif (3351 bytes)

U1
U2
C1 - C4
C6
C5
Max202
LM78L05
0.1uF / 16v
1uF / 15v
10uF / 6v

The following table show pin-outs for both 25 or 9 pin serial connectors

DB-25
2
3
4
5
6
7
8
20
22

DB-9
3
2
7
8
6
5
1
4
9

Description
TxD
RxD
RTS
CTS
DSR
GND
DCD
DTR
RI


 

Last Updated: July 30st, 1998