| Manufacturer | Part # | Datasheet | Description |
 Gilway Technical Lamp |
HT912
|
108Kb/2P |
Commercial Grade Lampholders
|
 Holtek Semiconductor In... |
HT9170
|
124Kb/12P |
DTMF Receiver
December 20, 1999 |
|
HT9170B
|
124Kb/12P |
DTMF Receiver
December 20, 1999 |
|
HT9170B
|
187Kb/13P |
DTMF Receiver
September 24, 2002 |
|
HT9170B
|
187Kb/13P |
DTMF Receiver
September 24, 2002 |
|
HT9170B
|
136Kb/14P |
DTMF Receiver
|
|
HT9170D
|
124Kb/12P |
DTMF Receiver
December 20, 1999 |
|
HT9170D
|
187Kb/13P |
DTMF Receiver
September 24, 2002 |
|
HT9170D
|
136Kb/14P |
DTMF Receiver
|
|
HT9172
|
134Kb/13P |
DTMF Receiver
March 30, 2006 |
|
HT9172
|
138Kb/14P |
DTMF Receiver
|