參數(shù)資料
型號(hào): 75T204-IL
廠商: Electronic Theatre Controls, Inc.
英文描述: 5V Low-Power Subscriber DTMF Receiver
中文描述: 5V的低功耗用戶的DTMF接收器
文件頁(yè)數(shù): 4/9頁(yè)
文件大小: 63K
代理商: 75T204-IL
75T204
5V Low-Power Subscriber
DTMF Receiver
4
DTMF DIALING MATRIX
See Figure 3. Please note that column 3 is for special applications and is not normally used in telephone dialing.
FIGURE 3: DTMF Dialing Matrix
FIGURE 4: Timing Diagram
Col 0
Col 1
Col 2
Col 3
Row 1
Row 2
Row 3
1
4
7
*
2
5
8
0
3
6
9
#
A
B
C
D
Row 0
Tone burst 2
Pause
ton
tD
tR
tS
tH
Analog
Input
D1, D2,
D4, D8
DV
Tone burst 1
toff
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