le75181 Zarlink Semiconductor, le75181 Datasheet
le75181
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le75181 Summary of contents
Page 1
... The VE750 series LCAS is meant as a solid-state alternative to the EMRs. The Le75181A/B device is pin-for-pin compatible with Legerity’s L7581A/B device, and the Le75181C device is pin- for-pin compatible with Legerity’s L8581A device. Legerity also offers a range of compatible SLIC devices and codec/filters that can be used with the VE750 series LCAS for complete line card solutions that can be used worldwide in analog line card applications ...
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... Loss of Battery Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Impulse Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Protection .10 Integrated SLIC Device Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Typical Performance Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Physical Dimensions .15 16-Pin, Plastic SOIC (GULL) (ASC/BSC/CSC .15 Revision history .16 Revision .16 Revision .16 Revision .16 Revision .16 Revision .16 2 Zarlink Semiconductor Inc. ...
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... This makes the Le75181 especially appropriate for remote power applications such as DAML or FOC/FITL or other Bellcore TA 909 applications where power dissipation is particularly critical. A battery voltage is also used by the Le75181, only as a reference for the integrated protection circuit. The Le75181 will enter an all OFF state upon loss of battery. ...
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... Switching Behavior section of this data sheet for input pin description output, will read HIGH when device is in its operational mode and in the thermal shutdown mode. In the Le75181, the thermal shutdown mechanism cannot be disabled. Battery voltage. Used as a reference for protection circuit. ...
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... JESD22 Class 1C compliant −40° to 85°C Typ 5 — rises above –10 V, the device will enter an all OFF state and remain in BAT 5 Zarlink Semiconductor Inc. Max Unit 110 °C 150 ° 260 ° – +0.3 ...
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... ELECTRICAL CHARACTERISTICS Summary of Assumptions Unless otherwise noted, the test conditions are defined by the Le75181 device application circuit shown in with: = − 5.0 V. BAT DD Supply Currents and Power Dissipation Operational State Condition Power Ringing VDD=5V, VBAT=-48V Idle/Talk VDD=5V, VBAT=-48V SPECIFICATIONS Device Specifications Table 1 ...
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... Sensitivity *This parameter is not tested in production. Choice of secondary protector should ensure this rating is not exceeded. †Applied voltage is 100 Vp-p square wave at 100 Hz. Not tested in production. Test Condition @ 50 Hz/60 Hz Test Condition 7 Zarlink Semiconductor Inc. Measure Min Typ Max Iswitch — — 1 Iswitch — ...
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... The probability of this event depends on the characteristics of the given SLIC device and of the holding current of the Le75181A/ C devices. The SCR hold current distribution is designed to be safely away from the test limit for Le75181A device. The limit for Le75181C device is 110 mA. The higher the distribution, the lower the probability of the latch. ...
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... As an additional protection feature, the Le75181 device monitors the battery voltage. Upon loss of battery voltage, the Le75181 will automatically enter an all OFF state and remain in that state until the battery voltage is restored. The Le75181 is designed so that the device will enter the all OFF state if the battery rises above approximately –10 V and will remain off until the battery drops below approximately – ...
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... With the above integrated protection features, only one overvoltage secondary protection device on the loop side of the Le75181 device is required. The purpose of this device is to limit fault voltages seen by the Le75181 device so as not to exceed the breakdown voltage or input-output isolation rating of the device. To minimize stress on the Le75181 device, use of a foldback- or crowbar-type device is recommended ...
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... V —Minimum magnitude breakdown voltage of Le75181 break switch. breakdownmin(break) V —Minimum magnitude breakdown voltage of Le75181 ring access switch. breakdownmin(ring) V —Maximum magnitude peak voltage of ringing signal. ringingpeakmax Series current-limiting fused resistors or PTC resistors should be chosen so as not to exceed the current rating of the external secondary protector. Refer to the manufacturer’ ...
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... BREAK SWITCHES Figure 3. Protection Circuit B Version dc CURRENT-LIMIT BREAK SWITCHES – BAT <1 µA dc CURRENT LIMIT (OF BREAK SWITCHES) Figure 4. Switches 1 and LIMIT R –1.5 V 1.5 V – LIMIT CURRENT LIMITING –I 12 Zarlink Semiconductor Inc CURRENT LIMITING 2 ...
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... Figure 5. Switch LIM1 2/3 R –V –V –V –1.5 R MAX 1.5 –I LIM2 –I LIM1 Figure 6. Switch –V OS – –I 13 Zarlink Semiconductor Inc LIM2 MAX +V ...
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... A parallel in/parallel out data latch is integrated into the Le75181 device. Operation of the data latch is controlled by the logic level input pin LATCH. The data input to the latch is the INPUT pin of the Le75181 device, and the output of the data latch is an internal node used for state control. ...
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... BSC 10.00 10.30 10.65 0.394 0.25 0.50 0.75 0.009 0.40 0.70 1.27 0.015 0 deg - 8 deg 0 deg 0.00 0.01 0.000 10.10 10.31 10.50 0.398 16-Pin SOIC 15 Zarlink Semiconductor Inc. Inch Nom Max 0.100 0.104 0.006 0.012 0.016 0.020 0.010 0.012 0.295 0.299 0.050 BSC 0.406 0.419 0.020 0.029 0.028 0.050 - 8 deg - 0.004 0.406 0.413 ...
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... REVISION HISTORY Revision • Page 1, changed OPNs from Le75181xx to Le75181xxC. • Page 3, towards the end, changed Le75181xx to Le75181xxC. • Page 16, changed Le75181xS to Le75181xSC. • Page 17, changed Le75181xQ to Le75181xQC. • Page 17, updated drawing for QFN package by adding line brakes. Revision • ...
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... I C Standard Specification as defined by Philips. Zarlink, ZL, the Zarlink Semiconductor logo are trademarks, and Legerity, the Legerity logo and combinations thereof are registered trademarks of Zarlink Semiconductor Inc. All other trademarks and registered trademarks are the property of their respective owners. © 2007 Zarlink Semiconductor Inc. All Rights Reserved. ...