HC9P5504B-5 Intersil, HC9P5504B-5 Datasheet - Page 6

• Manufacturer Part Number: HC9P5504B-5
• Description: IC,SLIC,2-4 CONVERSION,BIPOLAR,SOP,24PIN,PLASTIC
• Manufacturer: Intersil

Specifications of HC9P5504B-5

• Rohs Compliant: NO

Pin Descriptions
NOTE:
Functional Diagram
1, 8, 15, 22
5. All grounds (AG, BG, and DG) must be applied before V
28 PIN
PLCC
to run separate grounds off a line card, the AG must be applied first.
24
25
26
27
28
2 WIRE
VOLTAGE
LOOP
RING
TIP
RING
DIP/SOIC
24 PIN
V
B
20
21
22
23
24
-
V
1/2 RING
B
RELAY
-
PROTECTION
SECONDARY
1/2 RING
RELAY
(Continued)
RING COMMAND
SYMBOL
POWER DENIAL
(Note 5)
150
+IN
AG
NC
RX
TX
C
150
56
RING SYNC
4
RFS
The non-inverting analog input of the spare operational amplifier.
Receive Input, 4-Wire Side - A high impedance analog input which is internally biased. Capacitive coupling
to this input is required. AC signals appearing at this input differentially drive the Tip feed and Ring feed
terminals, which in turn drive tip and ring through 300 of feed resistance on each side of the line.
Capacitor #4 - An external capacitor to be connected between this terminal and analog ground. This ca-
pacitor prevents false ground key indication and false ring trip detection from occurring when longitudinal
currents are induced onto the subscriber loop from near by power lines and other noise sources. This ca-
pacitor is also required for the proper operation of ring trip detection. Typical value is 0.5 F, to 1.0 F, 20V.
This capacitor should be nonpolarized.
Analog Ground - To be connected to zero potential and serves as a reference for the transmit output (TX)
and receive input (RX) terminals.
Transmit Output, 4-Wire Side - A low impedance analog output which represents the differential voltage
across Tip and Ring. Transhybrid balancing must be performed (using the SLIC microcircuit’s spare op
amp) beyond this output to completely implement two to four wire conversion. This output is unbalanced
and referenced to analog ground. Since the DC level of this output varies with loop current, capacitive cou-
pling to the next stage is essential.
No internal connection.
150
150
RING
PD
TIP
V
RC
RD
BG
RS
RF
TF
B
-
B
+ or V
SLIC MICROCIRCUIT
HC-5504B
CURRENT
BATTERY
CONTROL
LIMITER
LOOP
FEED
B
RING
-. Failure to do so may result in premature failure of the part. If a user wishes
RING
TRIP
DRIVERS
DESCRIPTION
LINE
+1
-1
MONITORING
LOOP
AMP
OP
+
-
+
-
DIFF
AMP
SHD
OUT
+IN
-IN
GKD
RX
TX
SWITCH HOOK
DETECTION
GROUND KEY
DETECTION
RECEIVE
INPUT
TRANSMIT
OUTPUT