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MT8972BE bảng dữ liệu(PDF) 3 Page - Mitel Networks Corporation

tên linh kiện MT8972BE
Giải thích chi tiết về linh kiện  ISO2-CMOS ST-BUS??FAMILY Digital Subscriber Interface Circuit Digital Network Interface Circuit
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nhà sản xuất  MITEL [Mitel Networks Corporation]
Trang chủ  http://www.mitel.com
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MT8972BE bảng dữ liệu(HTML) 3 Page - Mitel Networks Corporation

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MT8971B/72B
9-109
Figure 3 - DV Port - 80 kbit/s (Modes 2, 3, 6)
Figure 4 - DV Port - 160 kbit/s (Modes 2, 3, 6)
17
22
OSC1
Oscillator Input. CMOS Input. D.C. couple signals to this pin. Refer to D.C. Electrical
Characteristics for OSC1 input requirements.
18
23
Precan
Precanceller Disable. When held to Logic ’1’, the internal path from LOUT to the
precanceller is forced to VBias thus bypassing the precanceller section. When logic ’0’, the
LOUT to the precanceller path is enabled and functions normally. An internal pulldown (50
k
Ω) is provided on this pin.
1,6,
11,
18,
20,
25
NC
No Connection. Leave open circuit.
19
24
LOUT DIS LOUT Disable. When held to logic “1”, LOUT is disabled (i.e., output = VBias). When logic
“0”, LOUT functions normally. An internal pulldown (50 kΩ) is provided on this pin.
20
26
TEST
Test Pin.
Connect to VSS for normal operation.
21
27
LIN
Receive Signal input (Analog).
22
28
VDD
Positive Power Supply (+5V) input.
Pin Description (continued)
Pin #
Name
Description
DIP PLCC
F0
C4
DSTi
DSTo
F0o
B17
B16
B15
B14
B13
B12
B11
B10
B17
B16
B15
B14
B13
B12
B11
B10
B17
B17
Channel Time 0
F0
C4
DSTi
DSTo
F0o
B17 B16 B15 B14 B13 B12 B11 B10
B17
B17
Channel Time 0
B17 B16 B15 B14 B13 B12 B11 B10
B27 B26 B25 B24 B23 B22 B21 B20
B27 B26 B25 B24 B23 B22 B21 B20
Channel Time 16



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