參數(shù)資料
型號(hào)： LV737212M
文件頁(yè)數(shù)： 10/27頁(yè)
文件大?。?/td> 308K
代理商： LV737212M
SP-CTL
This pin provides the speaker reception control output. This output is set on during the on-hook dialing, monitor, and
hold states. This is a complementary output.
DTMF
The DTMF output pin. This is an npn emitter-follower output.
MUTE2
The DTMF muting output. This output is turned on in synchronization with the DTMF output. This is an n-channel
open-drain output. The wired OR with the MUTE1 output can be taken.
MUTE1
The DP and K-TONE muting output. This output is turned on in synchronization with the dialing pulse and K-TONE
outputs. This is an n-channel open-drain output. The wired OR with the MUTE2 output can be taken.
S-OUT
The serial data output. This pin is used to output the internal status of the LC737212/M and the keypad data. This is an
n-channel open-drain output.
DP
The dialing pulse output. This is an n-channel open-drain output.
K-TONE
This pin outputs the key input confirmation tone (1036 Hz, 31 ms) and the memory store confirmation tone (2073 Hz,
279 ms). This is a complementary output.
HOOK-CTL
The circuit control output. A high level is output when the circuit is connected. This is a complementary output.
HOLD-OUT
The hold control output. A high level is output during a hold. This is a complementary output.
XIN and XOUT
The oscillator connection pins. Connect a 3.579545-MHz oscillator element. No other external components are
required if a crystal oscillator element with built-in feedback resistor and capacitor components is used. Two 30-pF
capacitors are required if a ceramic resonator is used.
R1 to R5 and C1 to C8
The keypad connections.
V
DD
and V
SS
The power supply connections.
No. 5203-10/27
LC737212, 737212M
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