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L8574D Datasheet(PDF) 7 Page - Agere Systems |
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L8574D Datasheet(HTML) 7 Page - Agere Systems |
7 / 36 page Lucent Technologies Inc. 7 Data Sheet October 1998 Relay, and Protector (SRP) for Long Loop and TR-57 Applications L8574D Resistive Subscriber Line Interface Circuit (SLIC), Ring Electrical Characteristics In general, minimum and maximum values are testing requirements. However, some parameters may not be tested in production because they are guaranteed by design and device characterization. Typical values reflect the design center or nominal value of the parameter; they are for information only and are not a requirement. Mini- mum and maximum values apply across the entire temperature range (–40 °C to +85 °C) and entire battery range (–35 V to –60 V). Unless otherwise specified, typical is defined as 25 °C, VCCA and VDD = +5.0 V, VBAT1 and VBAT2 = –48 V. Positive currents flow into the device. Table 2. Operating Conditions and Powering 1. Not to exceed 26 grams of water per kilogram of dry air. 2. Includes current in all external resistors per Figure 15. 3. This parameter is not tested in production. It is guaranteed by design and device characterization. 4. VBAT1 and VBAT2 power supply rejection depends on the battery noise cancellation circuit. The performance stated here applies to VBAT2 only during the talk state and VBAT1 only during the on-hook transmission state and assumes proper battery noise cancellation (see Figure 5). Parameter Min Typ Max Unit Temperature Range –40 — 85 °C Humidity Range 5 — 951 %RH Supply Voltages: VCCA VDD VBAT1 VBAT2 VCCA – VDD 4.6 4.6 –42.5 –20 — 5.0 5.0 –48 –48 — 5.5 5.5 –60 VBAT1 ±0.5 V V V V V Supply Currents (scan state; no loop current)2: IVCCA + IVDD (+5 V) IVBAT1 (–48 V) + IVBAT2 (–48 V) — — — — 3.0 –825 mA µA Supply Currents (talk or on-hook transmission state; no loop current)2: IVCCA + IVDD (+5 V) IVBAT1 (–48 V) + IVBAT2 (–48 V) — — — — 6.0 –4.5 mA mA Total Power Dissipation (no loop current)2 (VCCA and VDD = +5 V; VBAT1 and VBAT2 = –48 V): Talk or On-hook Transmission State Scan State — — — — 240 55 mW mW Power Supply Rejection (Tip/Ring)3: VCCA (500 Hz—3 kHz; 50 mVrms ripple) VDD (500 Hz—3 kHz; 50 mVrms ripple) VBAT2 and VBAT1 (500 Hz—2 kHz; 50 mVrms ripple)4 VBAT2 and VBAT1 (2 kHz—3 kHz; 50 mVrms ripple)4 40 50 40 35 50 — — 40 — — — — dB dB dB dB Thermal3: Thermal Resistance (still air) Operating Tjc Thermal Shutdown Temperature — — — — — 145 60 135 — °C/W °C °C |
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