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參數(shù)資料
| 型號： | HM9270C |
| 廠商： | ELAN Microelctronics Corp . |
| 英文描述： | DTMF Receiver(集成了濾波器和數(shù)字譯碼器功能的雙音多頻（DTMF）接收器) |
| 中文描述： | 雙音多頻接收器（集成了濾波器和數(shù)字譯碼器功能的雙音多頻（DTMF）的接收器） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 57K |
| 代理商： | HM9270C |
DTMF RECEIVER
HM 9270C/D
— 1 —
General Description
The HM 9270C/D is a complete DTMF receiver integrating both the bandsplit filter and digital
decoder functions. The filter section uses switched capacitor techniques for high- and low-group
filters and dial-tone rejection. Digital counting techniques are employed in the decoder to detect and
decode all 16 DTMF tone-pairs into a 4-bit code. External component count is minimized by on-
chip provision of a differential input amplifier, clock-oscillator and latched 3-state bus interface.
Features
* Complete receiver in an 18-pin package.
* Excellent performance.
* CMOS, single 5 volt operation.
* Minimum board area.
* Central office quality.
* Low power consumption.
* Power-Down mode (HM9270D only).
* Inhibit-mode (HM9270D only).
Pin Configurations
* Connect to V
SS
HM9270C
IN+
IN
GS
IC*
IC*
OSC1
OSC2
V
SS
V
DD
St/GT
V
REF
ESt
StD
Q4
Q3
Q2
Q1
TOE
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
HM9270D
IN+
IN
GS
INH
PWDN
OSC1
OSC2
V
SS
V
DD
St/GT
V
REF
ESt
StD
Q4
Q3
Q2
Q1
TOE
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HM9270D | 制造商:EMC 制造商全稱:ELAN Microelectronics Corp 功能描述:DTMF RECEIVER |
| HM92M | 制造商:HSMC 制造商全稱:HSMC 功能描述:PNP EPITAXIAL PLANAR TRANSISTOR |
| HM94 | 制造商:HSMC 制造商全稱:HSMC 功能描述:PNP EPITAXIAL PLANAR TRANSISTOR |
| HM965 | 制造商:HSMC 制造商全稱:HSMC 功能描述:NPN EPITAXIAL PLANAR TRANSISTOR |
| HM9-6516BB6129 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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