Sony Ericsson GR47 Integrator's Manual page 55

Note!
LZT 123 7589 R2B
KEYBOARD INTERFACE
The method of connection is shown below.
GR47
Figure 7.1 Keyboard matrix connections
This matrix pattern may be repeated up to 5 columns and 4
rows (one column will use a ground connection as a virtual
column driver).
Examples of suitable transistors are:
Brand Part Number
Toshiba RN1107 (as shown)
On SEMI DTC114YET1
Philips PDTC114YE
ROHM DTC114YETL
1 2
4 5
RN1107
3
6
RN1107
RN1107
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