Sony Ericsson GR47/GR48 Integrator's Manual page 53

LZT 123 7589 R1A
7. 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 3
4 5 6
RN1107
RN1107
RN1107
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