HC5503PRI Datasheet, PDF (4/8 Pages) Intersil Corporation – Low Cost SLIC For Large Telecom Switches

HC5503PRI
Electrical Specifications
PARAMETER
Unless Otherwise Specified, V_B- = -48V, V_B+ = 5V, AG = BG = DG = 0V, R_P = 50Ω, R_S = 100Ω, Typical
Parameters. T_A = 25°C. Min-Max Parameters are Over Operating Temperature Range (Continued)
CONDITIONS
MIN
TYP MAX UNITS
UNCOMMITTED OP AMP SPECIFICATIONS
Input Offset Voltage
-
±5
-
mV
Input Offset Current
-
±10
-
nA
Input Bias Current
-
20
-
nA
Differential Input Resistance
(Note 4)
-
1
-
MΩ
Output Voltage Swing
Output Resistance
Small Signal GBW
R_L = 10K, V_B+ = 5V
A_VCL = 1 (Note 4)
(Note 4)
-
±3
-
V_PEAK
-
10
-
Ω
-
1
-
MHz
NOTES:
3. I_LONG = Longitudinal Current.
4. These parameters are controlled by design or process parameters and are not directly tested. These parameters are characterized upon initial
design release, upon design changes which would affect these characteristics, and at intervals to assure product quality and specification
compliance.
Pin Descriptions
24 PIN
DIP/SOIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SYMBOL
DESCRIPTION
TIP
An analog input connected to the TIP (more positive) side of the subscriber loop through a sense resistor (R_S) and a
ring relay contact. Functions with the Ring terminal to receive voice signals from the telephone and for loop monitoring
purposes.
RING
An analog input connected to the RING (more negative) side of the subscriber loop through a sense resistor (R_S) and
a ring relay contact. Functions with the Tip terminal to receive voice signals from the telephone and for loop monitoring
purposes.
RFS
Senses ring side of loop for ground key and ring trip detection. During ringing, the ring signal is inserted into the line
at this node and RF is isolated from RFS via a relay.
V_B+ Positive Voltage Source - Most positive supply. V_B+ is typically.
C₁
Capacitor #1 - An external capacitor to be connected between this terminal and analog ground. Required for proper
operation of the loop current limiting function, and for filtering V_B-. Typical value is 0.3µF, 30V.
DG Digital Ground - To be connected to zero potential and serves as a reference for all digital inputs and outputs on the
SLIC microcircuit.
RS Ring Synchronization Input - A TTL - compatible clock input. The clock should be arranged such that a positive pulse
transition occurs on the zero crossing of the ring voltage source, as it appears at the RFS terminal. For Tip side injected
systems, the RS pulse should occur on the negative going zero crossing and for Ring injected systems, on the positive
going zero crossing. This ensures that the ring relay activates and deactivates when the instantaneous ring voltage is
near zero. If synchronization is not required, the pin should be tied to 5V.
RD Relay Driver - A low active open collector logic output. When enabled, the external ring relay is energized.
TF
Tip Feed - A low impedance analog output connected to the TIP terminal through a sense resistor (R_S). Functions with
the RF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current.
RF
Ring Feed - A low impedance analog output connected to the RING terminal through a sense resistor (R_S). Functions
with the TF terminal to provide loop current, feed voice signals to the telephone set, and sink longitudinal current.
V_B- Negative Voltage Source - Most negative supply. V_B- is typically -48V with an operational range of -42V to -58V.
Frequently referred to as “battery”.
BG Battery Ground - To be connected to zero potential. All loop current and some quiescent current flows into this ground
terminal.
SHD
Switch Hook Detection - A low active LS TTL - compatible logic output. This output is enabled for loop currents
exceeding the switch hook threshold.
NC Used during production test. Leave disconnected.
4
FN6101.0