Micrel, Inc. SY89833AL Ordering Information(1) Part Number SY89833ALMG (2) SY89833ALMGTR (1 2) Package Type Operating Range Package Marking Lead Finish QFN-16 Industrial 833A with Pb-Free bar-line indicator NiPdAu Pb-Free QFN-16 Industrial 833A with Pb-Free bar-line indicator NiPdAu Pb-Free Notes: 1. Tape and Reel. 2. Pb-Free package is recommended for new designs. Pin Configuration 16-Pin Truth Table IN /IN EN Q /Q 0 1 1 0 1 1 0 1 X X 0 1 0 (1) 0 1 (1) Note: 1. On next negative transition of the input signal (IN). Oct. 1, 2013 2 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Pin Description Pin Number Pin Name 15, 16 Q0, /Q0 1, 2 Q1, /Q1 3, 4 Q2, /Q2 5, 6 Q3, /Q3 8 EN This single-ended TTL/CMOS-compatible input functions as a synchronous output enable. The synchronous enable ensures that enable/disable will only occur when the outputs are in a logic LOW state. Note that this input is internally connected to a 25kΩ pull-up resistor and will default to logic HIGH state (enabled) if left open. 9, 12 /IN, IN Differential Input: This input pair is the differential signal input to the device. Input accepts AC- or DC-Coupled differential signals as small as 100mV. Each pin of the pair internally terminates to a VT pin through 50Ω. Note that this input will default to an intermediate state if left open. Please refer to the “Input Interface Applications” section for more details. 10 VREF-AC Reference Voltage: This output biases to VCC–1.4V. It is used when ACCoupling the input (IN, /IN). For AC-Coupled applications, connect VREF-AC to VT pin and bypass with 0.1μF low ESR capacitor to VCC. See “Input Interface Applications” section for more details. Maximum sink/source current is ±1.5mA. Due to the limited drive capability, each VREF-AC pin is only intended to drive its respective VT pin. 11 VT Input Termination Center-Tap: Each side of the differential input pair terminates to the VT pin. The VT pin provides a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section for more details. 13 GND Ground. GND pin and exposed pad must be connected to the most negative potential of the device ground. 7, 14 VCC Positive Power Supply: Bypass with 0.1μF//0.01μF low ESR capacitors and place as close to each VCC pin as possible. Oct. 1, 2013 Pin Function LVDS Differential Outputs: Normally terminated with 100Ω across the pair (Q, /Q). See “LVDS Outputs” section, Figure 2a. Unused outputs should be terminated with a 100Ω resistor across each pair. 3 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VCC) .................................... –0.5V to +4.0V Input Voltage (VIN) ................................. –0.5V to VCC +0.3V LVDS Output Current (IOUT) ....................................... ±10mA Input Current Source or Sink Current on (IN, /IN) .................... ±50mA VT Current Source or Sink Current on (VT) ............. ……….±100mA VREF-AC Current Source or Sink Current on (VREF-AC) ..................... ±2mA Maximum Operating Junction Temperature ............... 125°C Lead Temperature (soldering, 20sec.) ....................... 260°C Storage Temperature (Ts) ......................... –65°C to +150°C Supply Voltage (VCC) .................................. +3.0V to +3.60V Ambient Temperature (TA) .......................... –40°C to +85°C (3) Junction Thermal Resistance QFN (TJA) Still-Air ......................................................... 75°C/W QFN (\JB)........................................................... 33°C/W Electrical Characteristics(4) TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min Typ Max Units VCC Power Supply Voltage Range 3.0 3.3 3.6 V ICC Power Supply Current 75 100 mA RIN Input Resistance (IN-to-VT) 45 RDIFF-IN Differential Input Resistance (IN-to-/IN) 90 50 55 Ω 100 110 Ω VIH Input HIGH Voltage (IN-to-/IN) 1.2 VCC V VIL Input LOW Voltage (IN-to-/IN) 0 VIH–0.1 V VIN Input Voltage Swing (IN-to-/IN) See Figure 2c. 0.1 1.7 V VDIFF_IN |IIN| Differential Input Voltage See Figure 2d. 0.2 Input Current (IN, /IN) Note 5 45 mA VREF-AC Reference Voltage VCC–1.325 V No load, max. VCC. V VCC–1.525 VCC–1.425 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 rating 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. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB. \JB and TJA values are determined for a 4-layer board in still-air number, unless otherwise stated. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. Due to the internal termination (see "Input Stage" section) the input current depends on the applied voltages at IN, /IN and VT inputs. Do not apply a combination of voltages that causes the input current to exceed the maximum limit! Oct. 1, 2013 4 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL LVDS Outputs DC Electrical Characteristics(6) VCC = 3.3V ±10%, RL = 100Ω across the output, T A = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min Typ VOUT Output Voltage Swing See Figure 2c. 250 325 VDIFF_OUT Differential Output Voltage Swing See Figure 2d. 500 650 VOCM Output Common Mode Voltage 'VOCM Change in Common Mode Voltage Max Units mV mV 1.125 1.275 V –50 50 mV Max Units 2.0 VCC V LVTTL/CMOS DC Electrical Characteristics(6) VCC = 3.3V ±10%, TA = –40°C to +85°C, unless otherwise noted. Symbol Parameter Condition Min Typ VIH Input HIGH Voltage VIL Input LOW Voltage 0 0.8 V IIH Input HIGH Current –125 30 μA IIL Input LOW Current –300 μA Notes: 6. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. Oct. 1, 2013 5 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Typical Characteristics VCC = 3.3V, GND = 0V, VIN = 400mV, RL = 100Ω across the outputs, TA = 25ºC, unless otherwise stated. Oct. 1, 2013 7 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Functional Characteristics VCC = 3.3V, GND = 0V, VIN = 400mV, RL = 100Ω across the outputs, TA = 25ºC, unless otherwise stated. Oct. 1, 2013 8 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Input Stage Figure 2b. LVDS Common Mode Measurement Figure 1. Simplified Differential Input Buffer Figure 2c. Single-Ended Swing LVDS Outputs LVDS specifies a small swing of 325mV typical, on a nominal 1.20V common mode above ground. The common mode voltage has tight limits to permit large variations in ground noise between an LVDS driver and receiver. Figure 2d. Differential Swing Figure 2a. LVDS Differential Measurement Oct. 1, 2013 9 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Input Interface Applications Figure 3a. DC-Coupled CML Input Interface Option: May connect VT to VCC Figure 3b. AC-Coupled CML Input Interface Figure 3d. AC-Coupled LVPECL Input Interface Figure 3e. LVDS Input Interface Figure 3c. DC-Coupled LVPECL Input Interface Related Product and Support Documentation Part Number Function Datasheet Link SY89830U 2.5V/3.3V/5V 2.5GHz 1:4 PECL/ECL Clock Driver with 2:1 Differential Input MUX http://www.micrel.com/product-info/products/sy89830u.shtml SY89831U Ultra-Precision 1:4 LVPECL Fanout Buffer/Translator with Internal Termination http://www.micrel.com/product-info/products/sy89831u.shtml SY89832U 2.5V Ultra-Precision 1:4 LVDS Fanout Buffer/Translator with Internal Termination http://www.micrel.com/product-info/products/sy89832u.shtml SY89834U 2.5/3.3V Two Input, 1GHz LVTTL/CMOS-toLVPECL 1:4 Fanout Buffer/Translator http://www.micrel.com/product-info/products/sy89834u.shtml SY89833L 3.3V Ultra-Precision 1:4 LVDS Fanout Buffer/Translator with Internal Termination http://www.micrel.com/page.do?page=/productinfo/products/sy89833l.shtml HBW Solutions New Products and Termination App. Note http://www.micrel.com/product-info/as/solutions.shtml Oct. 1, 2013 10 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL Package Information 16-Pin QFN Oct. 1, 2013 11 M9999-032609-A [email protected] or (408) 955-1690 Micrel, Inc. SY89833AL PCB Thermal Consideration for 16-Pin QFN Package (Always solder, or equivalent, the exposed pad to the PCB) Package Notes: 1. Package meets Level 2 moisture sensitivity classification, and are shipped in dry-pack form. 2. Exposed pads must be soldered to a ground for proper thermal management. MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2009 Micrel, Incorporated. Oct. 1, 2013 12 M9999-032609-A [email protected] or (408) 955-1690