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.
Electrical Specifications
PARAMETER
On Hook Power Dissipation
Off Hook Power Dissipation
Off Hook I
B
+
Off Hook I
B
+
Off Hook I
B
-
Off Hook Loop Current
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
Ring Trip Detection Period
Switch Hook Detection Threshold
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters
T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
CONDITIONS
I
LONG
= 0 (Note 3), V
B
+ = 12V
R
L
= 600Ω, I
LONG
= 0 (Note 3), V
B
+ = 12V
R
L
= 600Ω, I
LONG
= 0 (Note 3), T
A
= -40
o
C
R
L
= 600Ω, I
LONG
= 0 (Note 3), T
A
= 25
o
C
R
L
= 600Ω, I
LONG
= 0 (Note 3)
R
L
= 1200Ω, I
LONG
= 0 (Note 3)
R
L
= 1200Ω, V
B
- = -42V, I
LONG
= 0 (Note 3)
T
A
= 25
o
C
R
L
= 200Ω, I
LONG
= 0 (Note 3)
MIN
-
-
-
-
-
-
17.5
36
TYP
170
425
-
-
35
21
-
41
MAX
235
550
6.0
5.3
41
-
-
48
UNITS
mW
mW
mA
mA
mA
mA
mA
mA
-
-
-
-
I
OL
= 62mA
V
RD
= 12V, RC = 1 = HIGH, T
A
= 25
o
C
R
L
= 600Ω
SHD = V
OL
SHD = V
OH
-
-
-
10
-
14
55
41
55
0.2
-
2
-
-
-
-
-
-
0.5
100
3
-
5
mA
mA
mA
mA
V
µA
Ring
Cycles
mA
mA
52
HC-5504B
Electrical Specifications
PARAMETER
Ground Key Detection Threshold
GKD = V
OL
GKD = V
OH
Loop Current During Power Denial
Dial Pulse Distortion
Receive Input Impedance
Transmit Output Impedance
2-Wire Return Loss
SR
L
LO
ER
L
SR
L
HI
Longitudinal Balance
2-Wire Off Hook
2-Wire On Hook
4-Wire Off Hook
Low Frequency Longitudinal Balance
R.E.A. Method (Note 3), R
L
= 600Ω
0
o
C
≤
T
A
≤
75
o
C
at 1kHz, 0dBm Input Level, Referenced 600Ω
-
200Hz - 3400Hz Referenced to Absolute Loss at
1kHz and 0dBm Signal Level (Note 3)
(Note 3)
-
-
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
Balance Network Set Up for 600Ω Termination at
1kHz
V
B
+ = +5V
V
B
+ = 12V
At 1kHz Referenced to 0dBm Level (Note 3)
+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
(Note 3)
30 - 60Hz, R
L
= 600Ω
(Note 3)
-
36
1.5
1.75
-
40
-
-
2
-
-
-
±0.05
±0.1
±0.3
ms
dB
V
PEAK
V
PEAK
dB
dB
dB
1
-89
5
-85
dBrnC
dBm0p
-
±0.05
±0.02
±0.2
±0.05
dB
dB
1V
RMS
200Hz - 3400Hz (Note 3) IEEE Method
0
o
C
≤
T
A
≤
75
o
C
(Note 3)
(Note 3)
Referenced to 600Ω + 2.16µF (Note 3)
-
-
-
15.5
24
31
-
-
-
dB
dB
dB
R
L
= 200Ω
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters
T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
(Continued)
CONDITIONS
MIN
20
-
-
0
-
-
TYP
-
-
±2
-
110
10
MAX
-
10
-
5
-
20
UNITS
mA
mA
mA
ms
kΩ
Ω
58
60
50
-
-
65
63
58
-
-
-
-
-
23
-67
dB
dB
dB
dBrnC
dBm0p
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
-
-
-
-
-
-
15
15
15
15
-
-
-
-
-
-
-
-
dB
dB
dB
dB
53
HC-5504B
Electrical Specifications
PARAMETER
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
+ = 12V, 5V
I
LOAD
80µA, V
B
+ = 12V
I
LOAD
40µA, V
B
+ = 5V
0V
≤
V
IN
≤
5V
Unless Otherwise Specified, V
B
- = -48V, V
B
+ = 12V and 5V, AG = BG = DG = 0V, Typical Parameters
T
A
= 25
o
C. Min-Max Parameters are Over Operating Temperature Range
(Continued)
CONDITIONS
200 - 16kHz, R
L
= 600Ω
MIN
30
30
30
30
-
TYP
-
-
-
-
-
MAX
-
-
-
-
±100
UNITS
dB
dB
dB
dB
µA
-
2.0
-
-
0.8
5.5
V
V
-
2.7
2.7
0.1
5.0
-
0.5
5.5
5.0
V
V
V
Uncommitted Op Amp Specifications
PARAMETER
Input Offset Voltage
Input Offset Current
Input Bias Current
Differential Input Resistance
Output Voltage Swing
(Note 3)
R
L
= 10K, V
B
+ = 12V
R
L
= 10K, V
B
+ = 5V
Output Resistance
Small Signal GBW
NOTES:
3. 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 com-
pliance.
4. I
LONG
= Longitudinal Current
A
VCL
= 1 (Note 3)
(Note 3)
CONDITIONS
MIN
-
-
-
-
-
-
-
-
TYP
±5
±10
20
1
±6.2
±3
10
1
MAX
-
-
-
-
±6.6
-
-
-
UNITS
mV
nA
nA
MΩ
V
PEAK
V
PEAK
Ω
MHz
54
HC-5504B
Pin Descriptions
28 PIN
PLCC
2
24 PIN
DIP/SOIC
1
SYMBOL
TIP
DESCRIPTION
An analog input connected to the TIP (more positive) side of the subscriber loop through a 150Ω feed re-
sistor 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 150Ω feed
resistor 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 12V or 5V.
Capacitor #3 - 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 out-
puts on the SLIC microcircuit.
Ring Synchronization Input - A TTL-compatible clock input. The clock should be arranged such that a pos-
itive pulse transition occurs on the zero crossing of the ring voltage source, as it appears at the RFS termi-
nal. 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 150Ω feed resistor.
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 150Ω feed resistor.
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.
Switch Hook Detection - A low active LS TTL - compatible logic output. This output is enabled for loop cur-
rents exceeding 10mA and disabled for loop currents less than 5mA.
Ground Key Detection - A low active LS TTL - compatible logic output. This output is enabled if the DC cur-
rent into the ring lead exceeds the DC current out of the tip lead by more than 20mA, and disabled if this
current difference is less than 10mA.
Power Denial - A low active TTL - Compatible logic input. When enabled, the switch hook detect (SHD) and
ground key detect (GKD) are 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).
Capacitor #2 - An external capacitor to be connected between this terminal and digital ground. Prevents
false ground key indications from occurring during ring trip detection. Typical value is 0.15µF, 10V. This ca-
pacitor is not used if ground key function is not required and (Pin 17) may be left open or connected to digital
ground.
The analog output of the spare operational amplifier. The output voltage swing is typically
±5V.
The inverting analog input of the spare operational amplifier.
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Microcontroller MCU
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