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SY89218U Datasheet(PDF) 6 Page - Micrel Semiconductor |
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SY89218U Datasheet(HTML) 6 Page - Micrel Semiconductor |
6 / 17 page Micrel, Inc. SY89221U January 2007 6 M9999-012407-B hbwhelp@micrel.com or (408) 955-1690 Absolute Maximum Ratings (1) Supply Voltage (VCC) ................................. –0.5V to +4.0V Input Voltage (VIN) ......................................... –0.5V to VCC Termination Current Source or sink current on VT ......................... ±100mA LVPECL Output Current (IOUT) Continuous ......................................................... 50mA Surge................................................................ 100mA Input Current Source or sink current on IN, /IN..................... ±50mA Operating Ratings (2) Supply Voltage (VIN) .................. +2.375V to +2.625V or .................................................. +3.0V to 3.6V Ambient Temperature (TA) ....................–40°C to +85°C Package Thermal Resistance (4) TQFP Still-air (θJA)...............................................35°C/W Junction-to-board (ψJB) ............................20°C/W VREF-AC Current (3) Source or sink current on VREF-AC...................... ±2mA Lead Temperature (soldering, 20sec.) ....................260°C Storage Temperature (Ts)……...………–65°C to +150°C DC Electrical Characteristics (5) VCC = +2.5V ±5% or 3.3V ±10%, TA = –40°C to +85°C unless otherwise stated. Symbol Parameter Condition Min Typ Max Units VCC Positive Supply Voltage Range 2.375 3.0 2.625 3.6 V ICC Power Supply Current 140 190 mA RDIFF_IN Differential Input Resistance (IN-to-/IN) 90 100 110 Ω RIN Input Resistance (IN-to-VT, /IN-to-VT) 45 50 55 Ω VIH Input HIGH Voltage (IN, /IN) 1.2 VCC V VIL Input LOW Voltage (IN, /IN) 0 VIH–0.1 V VIN Input Voltage Swing (IN, /IN) See Figure 1a; Note 6 0.1 2.5 V VDIFF_IN Differential Input Voltage Swing |IN – /IN| See Figure 1b 200 mV VIN_FSI Input Voltage Threshold that Triggers FSI 30 100 mV VREF-AC Reference Voltage VCC–1.3 VCC–1.2 VCC–1.1 V VT_IN Voltage from Input to VT 1.28 V Notes: 1. Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings conditions for extended periods may affect device reliability. 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Due to the limited drive capability use for input of the same package only. 4. ψJB and θJA values are determined for a 4-layer board in still-air number, unless otherwise stated. 5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 6. VIN(max) is specified when VT is floating. |
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