CB-DB9-Y

Accessories and Extras

$10

DB-9 Y Cable

The CB-DB9-Y cable separates pins of the DB9 header so more than one UART can be connected at a time.

CB-DB9-Y Pin Out:

Below is a connection layout for the CB-DB9-Y, with the main female DB9-Y in the center and the split connectors A and B on either side. DB9-A is a straight through connection whereas DB9-B has pins 2 and 3 connected with 7 and 8 of DB9-Y and pins 7 and 8 not connected.

DB9-A     DB9-Y     DB9-B
1 ------- 1 ------- 1
2 ------- 2 ------- 8
3 ------- 3 ------- 7
4 ------- 4 ------- 4
5 ------- 5 ------- 5
6 ------- 6 ------- 6
7 ------- 7 ------- 3
8 ------- 8 ------- 2
9 ------- 9 ------- 9

Note: Typical PC NULL Modem cables will ground unused signals, which can interfere with the Rx and Tx signals on the opposite side of the Y cable (see pins in red above).

For more information, see the cb-db9-y.pdf datasheet.

Various DB9 Header Pin Functions:

 =============
1\\+ + + + +//5
6 \\+ + + +// 9
   =========
   DB9 HEADER

Pin #	TS-752	TS-7552 & TS-7553	TS-8200
1	485_X+	485_X+	485_X+
2	Console_RXD	UART1_RXD	DEBUG_RXD
3	Console_TXD	UART1_TXD	DEBUG_TXD
4	N/C	CAN_H	CAN_H
5	GND	GND	GND
6	485_X-	485_X-	485_X-
7	DIO5_TXD2	UART2_TXD	UART1_TXD
8	DIO6_RXD2	UART2_RXD	UART1_RXD
9	N/C	CAN_L	CAN_L