CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES:
1. Absolute maximum ratings are limiting values, applied individually, beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied.
2.
θ
JA
is measured with the component mounted on an evaluation PC board in free air.
3.
θ
JA
for the QFN package is measured in free air with the component mounted on a high effective thermal conductivity test board with direct
attach features including conductive thermal vias. See Tech Brief TB379 and TB389 for additional information and board layout consideration
Electrical Specifications
PARAMETER
On Hook Power Dissipation
Off Hook Power Dissipation
On Hook I
B
+
Off Hook I
B
+
On Hook I
B
-
Off Hook I
B
-
Off Hook Loop Current
Off Hook Loop Current
Fault Currents
TIP to Ground
RING to Ground
TIP to RING
TIP and RING to Ground
Ring Relay Drive V
OL
Ring Relay Driver Off Leakage
DC Ring Trip Threshold
Switch Hook Detection Threshold
Loop Current During Power Denial
Dial Pulse Distortion
Receive Input Impedance
Transmit Output Impedance
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 5V, AG = BG = DG = 0V, R
P
= 50
Ω
, R
S
= 100
Ω
, Typical
Parameters. T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
CONDITIONS
I
LONG
= 0 (Note 4)
R
L
= 600Ω, I
LONG
= 0 (Notes 3, 4)
R
L
=
∞,
I
LONG
= 0
R
L
= 600Ω, I
LONG
= 0
R
L
=
∞,
I
LONG
= 0
R
L
= 600Ω, I
LONG
= 0
R
L
= 1800Ω (I
LOOP
= 0)
R
L
= 200Ω, I
LONG
= 0 (Note 3)
MIN
-
-
-
-
-
-
18
25
TYP
113
750
1.4
2.8
2.2
31
-
30
MAX
-
-
-
-
-
-
-
35
UNITS
mW
mW
mA
mA
mA
mA
mA
mA
-
-
-
-
I
OL
= 62mA
V
RD
= 12V, RC = 1 = HIGH, T
A
= 25
o
C
-
-
8.1
5.0
R
L
= 200Ω
(Note 4)
(Note 4)
(Note 4)
-
0
-
-
27
55
30
69
0.2
-
10.8
7.5
3.2
-
110
10
-
-
-
-
0.5
100
13.5
10
-
0.5
-
20
mA
mA
mA
mA
V
µA
mA
mA
mA
ms
kΩ
Ω
2
HC5503PRC
Electrical Specifications
PARAMETER
2-Wire Return Loss
SR
L
LO
ER
L
SR
L
HI
Longitudinal Balance
2-Wire Off Hook (Note 4)
2-Wire On Hook (Note 4)
4-Wire Off Hook
Insertion Loss
2-Wire to 4-Wire, 4-Wire to 2-Wire
Frequency Response
Idle Channel Noise
2-Wire to 4-Wire, 4-Wire to 2-Wire
At 1kHz, 0dBm Input Level, Referenced 600Ω,
R
P
= R
S
= 150Ω
200 - 3400Hz Referenced to Absolute Loss at 1kHz and
0dBm Signal Level, R
P
= R
S
= 150Ω (Note 4)
R
P
= R
S
= 150Ω (Note 4)
-
-
Absolute Delay
2-Wire to 4-Wire, 4-Wire to 2-Wire
Trans Hybrid Loss
Overload Level
2-Wire to 4-Wire, 4-Wire to 2-Wire
Level Linearity
2-Wire to 4-Wire, 4-Wire to 2-Wire (Note 4)
At 1kHz, (Note 4) Referenced to 0dBm Level,
R
P
= R
S
= 150Ω
+3 to -40dBm
-40 to -50dBm
-50 to -55dBm
Power Supply Rejection Ratio
V
B
+ to 2-Wire
V
B
+ to Transmit
V
B
- to 2-Wire
V
B
- to Transmit
V
B
+ to 2-Wire
V
B
+ to Transmit
V
B
- to 2-Wire
V
B
- to Transmit
Logic Input Current (RS, RC, PD)
Logic Inputs
Logic ‘0’ V
IL
Logic ‘1’ V
IH
Logic Outputs
Logic ‘0’ V
OL
Logic ‘1’ V
OH
I
LOAD
800µA, V
B
+ = 5V
I
LOAD
40µA, V
B
+ = 5V
-
2.7
0.1
-
0.5
5.0
V
V
-
2.0
-
-
0.8
5.5
V
V
0V
≤
V
IN
≤
5V
200 - 16kHz, R
L
= 600Ω, R
P
= R
S
= 150Ω
R
P
= R
S
= 150Ω (Note 4)
30 - 60Hz, R
L
= 600Ω
-
-
-
-
-
-
±0.05
±0.1
±0.3
dB
dB
dB
Balance Network Set Up for 600Ω Termination at 1kHz,
R
P
= R
S
= 150Ω (Note 4)
V
B
+ = +5V, R
P
= R
S
= 150Ω (Note 4)
1.5
-
-
V
PEAK
R
P
= R
S
= 150Ω (Note 4)
-
30
-
40
2
-
µs
dB
1
-89
5
-85
dBrnC
dBm0p
1V
RMS
200Hz - 3400Hz, (Note 4) IEEE Method
0
o
C
≤
T
A
≤
75
o
C, R
P
= R
S
= 150Ω
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 5V, AG = BG = DG = 0V, R
P
= 50
Ω
, R
S
= 100
Ω
, Typical
Parameters. T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
(Continued)
CONDITIONS
(Referenced to 600Ω + 2.16µF), R
P
= R
S
= 150Ω
(Note 4)
MIN
TYP
MAX
UNITS
-
-
-
15.5
24
31
-
-
-
dB
dB
dB
53
53
50
58
58
58
±0.05
±0.02
-
-
-
±0.2
±0.05
dB
dB
dB
-
-
dB
dB
15
15
15
15
30
30
30
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
±100
dB
dB
dB
dB
dB
dB
dB
dB
µA
3
HC5503PRC
Electrical Specifications
PARAMETER
UNCOMMITTED OP AMP SPECIFICATIONS
Input Offset Voltage
Input Offset Current
Input Bias Current
Differential Input Resistance
Output Voltage Swing
Output Resistance
Small Signal GBW
NOTES:
4. I
LONG
= Longitudinal Current.
5. 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.
(Note 4)
R
L
= 10K, V
B
+ = 5V
A
VCL
= 1 (Note 4)
(Note 4)
-
-
-
-
-
-
-
±5
±10
20
1
±3
10
1
-
-
-
-
-
-
-
mV
nA
nA
MΩ
V
PEAK
Ω
MHz
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 5V, AG = BG = DG = 0V, R
P
= 50
Ω
, R
S
= 100
Ω
, Typical
Parameters. T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
(Continued)
CONDITIONS
MIN
TYP
MAX
UNITS
Pin Descriptions
28 PIN
PLCC
2
24 PIN
DIP/SOIC
1
7x7
QFN
28
SYMBOL
TIP
DESCRIPTION
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.
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.
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.
Positive Voltage Source - Most positive supply. V
B
+ is typically.
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.
Digital Ground - To be connected to zero potential and serves as a reference for all digital inputs
and outputs on the SLIC microcircuit.
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.
Relay Driver - A low active open collector logic output. When enabled, the external ring relay is
energized.
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.
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.
Negative Voltage Source - Most negative supply. V
B
- is typically -48V with an operational range
of -42V to -58V. Frequently referred to as “battery”.
Battery Ground - To be connected to zero potential. All loop current and some quiescent current
flows into this ground terminal.
3
2
31
RING
4
5
6
3
4
5
32
1
3
RFS
V
B
+
C
1
7
9
6
7
4
5
DG
RS
10
11
8
9
6
7, 8
RD
TF
12
10
9, 10
RF
13
14
11
12
11
12
V
B
-
BG
4
HC5503PRC
Pin Descriptions
28 PIN
PLCC
16
17
18
24 PIN
DIP/SOIC
13
14
15
(Continued)
7x7
QFN
13
14,19
15
SYMBOL
SHD
NC
PD
DESCRIPTION
Switch Hook Detection - A low active LS TTL - compatible logic output. This output is enabled
for loop currents exceeding the switch hook threshold.
Used during production test. Leave disconnected.
Power Denial - A low active TTL - Compatible logic input. When enabled, the ring feed voltage
collapses to the tip feed voltage (~4V). The DC feed is disabled, but the AC transmission is
maintained. The switch hook detect (SHD) is not necessarily valid, and the relay driver (RD)
output is disabled.
Ring Command - A low active TTL - Compatible logic input. When enabled, the relay driver (RD)
output goes low on the next high level of the ring sync (RS) input, as long as the SLIC is not in
the power denial state (PD = 0) or the subscriber is not already off- hook (SHD = 0).
Leave disconnected.
The analog output of the spare operational amplifier.
The inverting analog input of the spare operational amplifier.
The non-inverting analog input of the spare operational amplifier.
Receive Input, Four 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.
Capacitor #2 - An external capacitor to be connected between this terminal and analog ground.
This capacitor is required for the proper operation of ring trip detection. Recommended value
0.82µF
±10%
10V non-polarized.
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, Four Wire Side - A low impedance analog output proportional to the loop
current. Transhybrid balancing must be performed 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 coupling to the next stage is
essential.
No internal connection.
19
16
16
RC
20
21
23
24
25
17
18
19
20
21
20
21
22
23
NC
OUT
-IN
+IN
RX
26
22
25
C
2
27
28
23
24
26
27
AG
TX
1, 8, 15, 22
2, 17,
18,24, 29,
30,
NC
NOTE: All grounds (AG, BG, and DG) must be applied before V
B
+ or V
B
-. Failure to do so may result in premature failure of the part. If a user wishes
to run separate grounds off a line card, the AG must be applied first.
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