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
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
TEST CONDITIONS
I
LONG
= 0, V
B
+ = 12V (Note 3)
R
L
= 600Ω, I
LONG
= 0, V
B
+ = 12V (Note 3)
R
L
= 600Ω, I
LONG
= 0, T
A
= -40
o
C (Note 3)
R
L
= 600Ω, I
LONG
= 0, T
A
= 25
o
C (Note 3)
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, T
A
= 25
o
C
(Note 3)
R
L
= 200Ω, I
LONG
= 0 (Note 3)
MIN
-
-
-
-
-
-
17.5
TYP
135
450
-
-
-
21
-
MAX
235
690
6.0
5.3
39
-
-
UNITS
mW
mW
mA
mA
mA
mA
mA
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
25.5
30
34.5
mA
-
-
-
-
I
OL
= 62mA
V
RD
= 12V, RC = 1 = HIGH, T
A
= 25
o
C
R
L
= 600Ω, T
A
= 25
o
C
SHD = V
OL
SHD = V
OH
-
-
-
10
-
14
47
30
47
0.2
-
2
-
-
-
-
-
-
0.5
100
3
-
5
mA
mA
mA
mA
V
µA
Ring Cycles
mA
mA
48
HC-5502B
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
SRL LO
ERL
SRL HI
Longitudinal Balance
2-Wire Off Hook
2-Wire On Hook
4-Wire Off Hook
Low Frequency Longitudinal Balance
R.E.A. Method, (Note 4)
R
L
= 600Ω,
0
o
C
≤
T
A
≤
75
o
C
At 1kHz, 0dBm Input Level, Referenced 600Ω
1V
RMS
200Hz - 3400Hz, (Note 4)
IEEE Method
0
o
C
≤
T
A
≤
75
o
C
58
60
50
-
-
-
65
63
58
-
-
±0.05
±0.02
-
-
-
23
-67
±0.2
±0.05
dB
dB
dB
dBrnC
dBm0p
dB
(Note 4)
(Note 4)
Referenced to 600Ω +2.16µF (Note 4)
-
-
-
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)
TEST CONDITIONS
MIN
20
-
-
0
-
-
TYP
-
-
±2
-
110
10
MAX
-
10
-
5
-
20
UNITS
mA
mA
mA
ms
kΩ
Ω
Insertion Loss
2-Wire to 4-Wire, 4-Wire to 2-Wire
Frequency Response
200 - 3400Hz Referenced to Absolute
Loss at 1kHz and 0dBm Signal Level (Note 4)
(Note 4)
-
dB
Idle Channel Noise
2-Wire to 4-Wire, 4-Wire to 2-Wire
-
-
1
-89
-
5
-85
2
dBrnC
dBm0p
µs
Absolute Delay
2-Wire to 4-Wire, 4-Wire to 2-Wire
Trans Hybrid Loss
(Note 4)
-
Balance Network Set Up for 600Ω
Termination at 1kHz
V
B
+ = 5V
V
B
+ = 12V
36
40
-
dB
Overload Level
2-Wire to 4-Wire, 4-Wire to 2-Wire
1.5
1.75
-
-
V
PEAK
V
PEAK
Level Linearity
2-Wire to 4-Wire, 4-Wire to 2-Wire
At 1kHz, (Note 4) Referenced to 0dBm Level
+3 to -40dBm
-40 to -50dBm
-50 to -55dBm
-
-
-
-
-
-
±0.05
±0.1
±0.3
dB
dB
dB
49
HC-5502B
Electrical Specifications
PARAMETER
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
0V
≤
V
IN
≤
5V
200 - 16kHz,
R
L
= 600Ω
30 - 60Hz,
R
L
= 600Ω,
(Note 4)
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)
TEST CONDITIONS
MIN
TYP
MAX
UNITS
15
15
15
15
30
30
30
30
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
±100
dB
dB
dB
dB
dB
dB
dB
dB
µA
-
2.0
-
-
0.8
5.5
V
V
I
LOAD
800µA, V
B
+ = 12V, 5V
I
LOAD
80µA, V
B
+ = 12V
I
LOAD
40µA, V
B
+ = 5V
-
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 4)
R
L
= 10kΩ, V
B
+ = 12V
R
L
= 10kΩ, V
B
+ = 5V
Output Resistance
Small Signal GBW
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 com-
pliance.
A
VCL
= 1, (Note 4)
(Note 4)
TEST 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
50
HC-5502B
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 resistor and a ring relay contact. Functions with the Ring terminal to receive voice signals from
the telephone and for loop monitoring process.
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.
Positive Voltage Source - Most positive supply. V
B
+ is typically 12V or 5V.
Capacitor #1 - Optional Capacitor used to improve power supply rejection. This pin should be left open
if unused.
Capacitor #3 - An external capacitor to be connected between this terminal and analog ground. Re-
quired for proper operation of the loop current limiting function, and for filtering V
B
- supply. 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.
Ring Synchronization Input - A TTL - compatible clock input. The clock should be arranged such that
a positive transition occurs on the negative going zero crossing of the ring voltage source, ensuring
that the ring relay is activated and deactivated when the instantaneous ring voltage is near zero. If
synchronization is not required, tie 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 signal 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 currents 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 current 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 rising edge 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 capacitor is not used if ground key function is not required.
The analog output of the spare operational amplifier.
The inverting analog input of the spare operational amplifier.
便携式数字数据采集系统（PDDAS）使用了LabVIEW实时模块和PXI，以控制风洞测试和采集记录来自128个不同通道的空气压力数据 "通过LabVIEW实时模块，可以在各种操作情况下获得采集空气压力数据及向风洞提供反馈控制信号所需的确定性响应时间。" – Dave Scheibenhoffer, G Systems 挑战: 用一个可采集、分析和存储来自下一代喷气式战斗机引擎设计的动...[详细]
介绍如何利用现代化布线设计工具集来应对复杂性的挑战。选项代码和表达式可以模拟汽车项目的变量。功能齐全的工具套件可以获取以约束形式被采用的最佳实践和规则。自动化可以帮助设计师稳定、连贯且低成本地管理复杂性。
Mentor Graphics国际 Capital 套件设计环境中的自动布线合成流程
Simon Holdsworth 表示：“利用规则和约束来指导一系列“变化与影响”的计算，...[详细]
Microchip MCU
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
