EM91710 Datasheet, PDF (1/19 Pages) ELAN Microelectronics Corp – TONE/PULSE SWITCHABLE DIALER

EME9M197117010AA//BB
TONE/TPOUNLES/PEUSLWESISTWCIHTCAHBALBELEDDIAIALLEERR
GENERAL DESCRIPTION
The EM91710A/B are Tone/Pulse switchable dialer which are fabricated in CMOS technology with wide
operating voltage for both tone and pulse mode, and consumes very low memory retention current in ON-HOOK
state.
FEATURES
• Tone/pulse switchable dialer.
• One 32-digit last number redial memory.
• Pulse to tone (P→T) is provided for PBX operation.
• Flash key is available.
• Minimum tone duration is 98ms or 83ms.
• Minimum intertone pause is 98ms or 83ms.
• Uses 3.579545 MHz crystal or ceramic resonator.
• Many options can be selected.
Mode (10 PPS ; 20 PPS ; Tone)
M/B ratio (40 : 60 ; 33 : 66)
Pause time (3.6s)
• Flash function (RESET)
P→T pause time (3.6s)
Flash time (600ms; 300ms; 100ms; or 80ms).
• Mixed dialing.
• Handfree function is provided for speaker phone application.
• Power on reset circuit is provided.
• Package in DIP18 or DIP16.
PIN ASSIGNMENTS
EM91710A
C2 1
C3 2
C4 3
C1 4
OSCI 5
OSCO 6
XMUTE 7
V_SS 8
16 R3
15 R2
14 R1
13 R4
12 TONE
11 PO
10 HKS
9 VDD
EM91710B
C2 1
C3 2
C4 3
C1 4
OSCI 5
OSCO 6
XMUTE 7
V_{SS 8}
HFI 9
18 R3
17 R2
16 R1
15 R4
14 TONE
13 PO
12 HKS
11 VDD
10 HFO
* This specification are subject to be changed without notice.
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