L7553AP, L7554, L7554AP Selling Leads, Datasheet
MFG:LUCENT Package Cooled:n/a D/C:00+
L7553AP, L7554, L7554AP Datasheet download
Part Number: L7553AP
MFG: LUCENT
Package Cooled: n/a
D/C: 00+
L7553AP, L7554, L7554AP
- Table of contents:
Info of L7553AP
Info of L7554
Info of L7554AP
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About L7551-21
PDF/DataSheet Download
Datasheet: L7551-21
File Size: 114909 KB
Manufacturer: HAMAMATSU [Hamamatsu Corporation]
Download : Click here to Download
About L7554
PDF/DataSheet Download
Datasheet: L7554
File Size: 498493 KB
Manufacturer: AGERE [Agere Systems]
Download : Click here to Download
About L7551-21
PDF/DataSheet Download
Datasheet: L7551-21
File Size: 114909 KB
Manufacturer: HAMAMATSU [Hamamatsu Corporation]
Download : Click here to Download
L7554 General Description
This electronic subscriber loop interface circuit (SLIC) is optimized for low-power consumption while providing an extensive set of features.
Quiet polarity reversal is possible because the ac path is uninterrupted during transition.
The L7554 includes the ground start state and a summing node for meter pulse injection to 2.2 Vrms. A spare, uncommitted op amp is included for meter pulse filtering.
The device is being offered in two versions, based upon maximum battery. The L7554AP is guaranteed to 60 V, and the L7554BP is guaranteed to 72 V.
The device is available in a 44-pin PLCC package. It is built by using a 90 V complementary bipolar (CBIC) process.
L7554 Maximum Ratings
|
Parameter |
Symbol |
Value |
Unit |
| 5 V Power Supply |
VCC |
7.0 |
V |
| Battery (Talking) Supply |
VBAT |
75 |
V |
| Logic Input Voltage |
- |
0.5 to +7.0 |
V |
| Analog Input Voltage |
- |
7.0 to +7.0 |
V |
| Maximum Junction Temperature |
TJ |
165 |
°C |
| Storage Temperature Range |
Tstg |
40 to +125 |
°C |
| Relative Humidity Range |
RH |
5 to 95 |
% |
| Ground Potential Difference (BGND to AGND) |
- |
±3 |
V |
| PT or PR Fault Voltage (dc) |
VPT, VPR |
(VBAT 5) to +3 |
V |
| PT or PR Fault Voltage (10 x 1000 µs) |
VPT, VPR |
(VBAT 15) to +15 |
V |
| Current into Ring Trip Inputs |
IRTSP, IRTSN |
±240 |
µA |
L7554 Features
Low active power (typical 165 mW during on-hook transmission)
Sleep state for low idle power (76 mW)
Quiet Tip/Ring polarity reversal
Supports meter pulse injection
Spare op amp for meter pulse filtering
24 V to 72 V power supply operation
Distortion-free on-hook transmission
Convenient operating states:
- Forward powerup
- Polarity reversal powerup
- Forward low-power scan
- Polarity reversal low-power scan
- Ground start
- Disconnect (high impedance)
Adjustable supervision functions:
- Off-hook detector with longitudinal rejection
- Ground key detector
- Ring trip detector
Independent, adjustable, dc and ac parameters:
- dc feed resistance
- Loop current limit
- Termination impedance
Thermal protection
Sleep state for low idle power (76 mW)
Quiet Tip/Ring polarity reversal
Supports meter pulse injection
Spare op amp for meter pulse filtering
24 V to 72 V power supply operation
Distortion-free on-hook transmission
Convenient operating states:
- Forward powerup
- Polarity reversal powerup
- Forward low-power scan
- Polarity reversal low-power scan
- Ground start
- Disconnect (high impedance)
Adjustable supervision functions:
- Off-hook detector with longitudinal rejection
- Ground key detector
- Ring trip detector
Independent, adjustable, dc and ac parameters:
- dc feed resistance
- Loop current limit
- Termination impedance
Thermal protection
L7554 Connection Diagram
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