Low Skew, 1-to16, Differential-to-2.5V 8530 LVPECL Fanout Buffer DATA SHEET General Description Features The 8530 is a low skew, 1-to-16 Differential-to- 2.5V LVPECL Fanout Sixteen differential LVPECL output pairs Buffer. The CLK, nCLK pair can accept most standard differential CLK, nCLK input pair input levels. The high gain differential amplifier accepts peak-to-peak CLK, nCLK pair can accept the following differential input input voltages as small as 150mV, as long as the common mode levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL voltage is within the specified minimum and maximum range. Maximum output frequency: 500MHz Guaranteed output and part-to-part skew characteristics make the Translates any single-ended input signal to 2.5V LVPECL levels 8530 ideal for those clock distribution applications demanding well with a resistor bias on nCLK input defined performance and repeatability. Output skew: 50ps (maximum) Part-to-part skew: 250ps (maximum) Propagation delay: 2ns (maximum) 3.3V core, 2.5V output operating supply 0C to 70C ambient operating temperature Available in lead-free (RoHS 6) package Block Diagram Pin Assignment Pulldown CLK Pullup nCLK 48 47 46 45 44 43 42 41 40 39 38 37 Q15 Q0 VCCO 1 CLK 36 Q11 2 VCCO 35 nQ15 nQ0 nQ11 3 nQ0 34 Q1 Q14 Q10 4 33 Q0 nQ10 5 32 nQ1 nQ1 nQ14 VEE Q1 6 31 Q2 Q13 Q9 7 VEE 30 nQ13 nQ9 nQ2 nQ2 8 29 Q8 9 Q2 28 Q12 Q3 nQ8 10 nQ3 27 nQ3 nQ12 VCCO 11 Q3 26 VCC 12 VCCO 25 Q11 Q4 13 14 15 16 17 18 19 20 21 22 23 24 nQ11 nQ4 Q5 Q10 8530 nQ5 nQ10 Q9 48-Lead LQFP Q6 7mm x 7mm x 1.4mm package body nQ9 nQ6 Y Package Q8 Q7 Top View nQ8 nQ7 8530 REVISION G 06/26/15 1 2015 Integrated Device Technology, Inc. VCC VCCO VCCO nQ12 Q7 Q12 nQ7 nQ13 Q6 Q13 nQ6 VEE VEE nQ14 Q5 Q14 nQ5 nQ15 Q4 Q15 VCCO nQ4 nCLK VCCO8530 DATA SHEET Table 1. Pin Descriptions Number Name Type Description 1, 11, 14, 24, 25, 35, 38, 48 V Power Output power supply pins. CCO 2, 3 Q11, nQ11 Output Differential output pair. LVPECL interface levels. 4, 5 Q10, nQ10 Output Differential output pair. LVPECL interface levels. 6, 19, 30, 43 V Power Negative power supply pins. EE 7, 8 Q9, nQ9 Output Differential output pair. LVPECL interface levels. 9, 10 Q8, nQ8 Output Differential output pair. LVPECL interface levels. 12, 13 V Power Positive power supply pins. CC 15, 16 Q7, nQ7 Output Differential output pair. LVPECL interface levels. 17, 18 Q6, nQ6 Output Differential output pair. LVPECL interface levels. 20, 21 Q5, nQ5 Output Differential output pair. LVPECL interface levels. 22, 23 Q4, nQ4 Output Differential output pair. LVPECL interface levels. 26, 27 Q3, nQ3 Output Differential output pair. LVPECL interface levels. 28, 29 Q2, nQ2 Output Differential output pair. LVPECL interface levels. 31, 32 Q1, nQ1 Output Differential output pair. LVPECL interface levels. 33, 34 Q0, nQ0 Output Differential output pair. LVPECL interface levels. 36 CLK Input Pulldown Non-inverting differential clock input. 37 nCLK Input Pullup Inverting differential clock input. 39, 40 Q15, nQ15 Output Differential output pair. LVPECL interface levels. 41. 42 Q14, nQ14 Output Differential output pair. LVPECL interface levels. 44, 45 Q13, nQ13 Output Differential output pair. LVPECL interface levels. 46, 47 Q12, nQ12 Output Differential output pair. LVPECL interface levels. NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values. Table 2. Pin Characteristics Symbol Parameter Test Conditions Minimum Typical Maximum Units C Input Capacitance 4pF IN R Input Pullup Resistor 51 k PULLUP R Input Pulldown Resistor 51 k PULLDOWN LOW SKEW, 1-TO16, DIFFERENTIAL-TO-2.5V LVPECL FANOUT 2 REVISION G 06/26/15 BUFFER