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SY89854U Datasheet(PDF) 2 Page - Micrel Semiconductor |
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SY89854U Datasheet(HTML) 2 Page - Micrel Semiconductor |
2 / 13 page Micrel, Inc. SY89854U June 2005 M9999-060905 hbwhelp@micrel.com or (408) 955-1690 2 Ordering Information (1) Part Number Package Type Operating Range Package Marking Lead Finish SY89854UMG MLF-16 Industrial 854U with Pb-free bar-line indicator Pb-Free NiPdAu SY89854UMGTR (2) MLF-16 Industrial 854U with Pb-free bar-line indicator Pb-Free NiPdAu Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals Only. 2. Tape and Reel. Pin Configuration 16-Pin MLF™ (MLF-16) Pin Description Pin Number Pin Name Pin Function 1, 4 IN, /IN Differential Input: This input pair is the signal to be buffered. These inputs accept AC- or DC-coupled differential signals as small as 100mV (200mVpp). Each pin of this pair internally terminates to a VT pin through 50 Ω. Note that this input will default to an indeterminate state if left open. Please refer to the “Input Interface Applications” section for more details. 2 VT Input Termination Center-Tap: Each side of the differential input pair terminates to this pin. The VT pin provides a center-tap to a termination network for maximum interface flexibility. See “Input Interface Applications” section for more details. 8,13 VCC Positive Power Supply. Bypass with 0.1 µF⎪⎪0.01µF low ESR capacitors as close to the VCC pin as possible. 15, 14 12, 11 10, 9 7, 6 Q0, /Q0 Q1, /Q1 Q2, /Q2 Q3, /Q3 Differential 100K LVPECL Output: These LVPECL outputs are the precision, low skew copies of the input signal. Terminate with 50 Ω to VCC–2V. Unused output pairs may be left floating with no impact on jitter. See “Output Interface Applications” section. 5, 16 GND, Exposed Pad Ground. Ground pin and exposed pad must be connected to the same ground plane. 3 VREF-AC Reference Voltage: This output biases to VCC–1.2V. It is used when AC coupling the inputs (IN, /IN). Connect VREF-AC to the VT pin. Bypass VREF-AF pin with a 0.01 µF low ESR capacitor to VCC. Maximum sink/source capability is 1.5mA. See “Input Interface Applications” section for more details. |
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