參數(shù)資料
型號: HC55131
廠商: Intersil Corporation
英文描述: Low Power Universal SLIC Family
中文描述: 低功耗通用用戶接口家庭
文件頁數(shù): 30/35頁
文件大?。?/td> 382K
代理商: HC55131
4-30
-
16
-
C4
Activates Test Relay TRLY1.
15
17
16
C3
TTL Compatible Logic Input. The logic states of C1, C2 and C3 determine the operating states of the
SLIC. Reference Table 1 for details.
16
18
17
C2
TTL Compatible Logic Input. The logic states of C1, C2 and C3 determine the operating states of the
SLIC. Reference Table 1 for details.
17
19
18
C1
TTL Compatible Logic Input. The logic states of C1, C2 and C3 determine the operating states of the
SLIC. Reference Table 1 for details.
18
20
19
SHD
Switch Hook Detect - Active during off hook, ground key and loopback. Reference Table 1 for details.
19
21
15
GKD_LVM
Ground Key Detector and Line Voltage Measurement - Reference Table 1 for details.
20
22
20
V
CC
5V Supply.
21
23
21
RD
Loop Current Threshold Programming Pin - A resistor between this pin and ground will determine the
trigger level for the loop current detect circuit. See Equation 7.
22
24
22
ROH
Off Hook Overload Setting Resistor - Used to set combined overhead for voice and pulse metering
signals. See Equation 10.
23
25
23
ILIM
Current Limit Programming Pin - A resistor between this pin and ground will determine the constant
current limit of the feed curve. See Equation 11.
24
26
24
RSYNC_REV
Ring Synchronization Input and Reversal Time Setting. A resistor between this pin and GND
determines the polarity reversal time. Synchronization of the closing of the relay at zero voltage is
achieved via a ring sync pulse (5V to 0V) synchronized to the ring signal zero voltage crossing
(Reference Figure 18).
25
27
28
AGND
Analog ground
26
28
25
VRX
Receive Input - Ground referenced 4-wire side.
27
29
26
SPM
Pulse Metering Signal Input. If pulse metering is not used, then this pin should be grounded as close
to the device pin as possible.
28
30
27
VTX
Transmit Output - Ground referenced 4-wire side.
-
31
-
TRLY2
Test Relay Driver 2.
-
32
-
TRLY1
Test Relay Driver 1.
Pin Descriptions
(Continued)
28
PIN
PLCC
32
PIN
PLCC
28
PIN
SOIC
SYMBOL
DESCRIPTION
HC55120, HC55121, HC55130, HC55131, HC55140, HC55141, HC55142, HC55143, HC55150, HC55151
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