U3761MB-AFN TEMIC Semiconductors, U3761MB-AFN Datasheet - Page 8

• Manufacturer Part Number: U3761MB-AFN
• Description: Low Voltage Standard Telephone Circuit with 13 Memories
• Manufacturer: TEMIC Semiconductors

U3761MB
8 (23)
SDIP40
30
31
32
33
34
35
36
SSO44
32
33
36
37
38
39
40
Symbol
MODE
Mask
OUT
VDD
HKS
BM
DP
VRING
MODE
VDD
Preliminary Information
OUT
B/M
HKS
DP
PD
PD
PD
Configuration
6V
30V
50V
PD
PD
6.5K
6V
Ê
DP
Ê
200
VL
Buzzer output
Supply output for dialer part
Hook switch input.
HKS = 1: On-hook state. Chip in
sleep mode, no operation.
HKS = 0: Off-hook state. Chip
enable for normal operation with a
pull-high resistor of about 4 M
If BM = floating pulse dialing with
3:2 B/M ratio
If BM is connected to ground pulse
dialing with a B/M ratio of 2:1
Pulling mode pin to V
dialer in tone mode. Pulling mode
pin to GND places the dialer in
DTMF with 140 ms inter-tone
pause. If the mode pin is left
floating, the dialer is in pulse mode
( 10 ppS)
N-channel open drain pulse dialing
output. Flash key will cause DP to
be active in either DTMF mode or
pulse mode.
Short mute during pulse dialing
TELEFUNKEN Semiconductors
Function
Rev. A2, 23-Apr-97
DD
places the
W
.