Datasheet > KK91531N

KK91531N

更新时间： 2024-01-09 07:07:03

品牌	Logo	应用领域
可天士 - KODENSHI		脉冲输入元件栅
页数	文件大小	规格书
8页	478K
描述
PARALLEL INPUT TONE/PULSE DIALER High-Performance Silicon-Gate CMOS

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KK91531N 技术参数

TECHNICAL DATA

KK91531

PARALLEL INPUT TONE/PULSE DIALER

High-Performance Silicon-Gate CMOS

The KK91531 provides a 4-bit data input and a handshaking signal to

serve as microcomputer interfaces. Under microcomputer control the

KK91531 generates both a DTMF signal and a pulse output for telephone

dialing. All necessary dual-tone frequencies and dial pulse outputs are

derived from the widely used TV crystal standard, providing high accuracy

and stability. The required sinusoidal waveform for individual tones is

digitally synthesized on the chip, resulting in a waveform with very low

total harmonic distortion.

•

4-bit parallel data input from microcomputer

TTL compatible inputs and outputs

Uses TV crystal standard (3.58 MHz) to derive all frequencies,

providing high accuracy and stability

Operating voltage: 2.5 to 5.5 Volts

Selectable M/B ratio

10 PPS dial rate

DTMF signaling of digits 0 9, *, #, A, B, C, and D

Pulse signaling of 0 ∼ 9, *, #, and A

High group tone pre-emphasis: 2 dB

ORDERING INFORMATION

KK91531N

T_A= -10° to 70° C

•

Low total harmonic distortion in DTMF signaling

PIN ASSIGNMENT

LOGIC DIAGRAM

PIN 10 = GND

PIN 16 = V_CC

12 3 4 5 6 7 8

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