DATASHEET OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS ICS552-01 Power-down and Tri-state modes Description ICS552-01 (for B mode) The ICS552-01 produces 8 low-skew copies of the multiple input clock or fundamental, parallel-mode Up to 200 MHz clock input/output at 3.3 V crystal. Unlike other clock drivers, these parts do not Low skew of 250 ps maximum for any bank of four require a separate oscillator for the input. Using IDTs Inputs can be connected together for a 1 to 8 buffer patented Phase-Locked Loop (PLL) to multiply the input with 250 ps skew between any outputs frequency, it is ideal for generating and distributing Non-inverting buffer mode multiple high-frequency clocks. This is a single chip Ideal for clock networks used for 3 different applications: Output Enable mode tri-states outputs Full CMOS output swing with 25 mA output drive 1) ICS552-01 (A mode) an Oscillator mutiplier capability at TTL levels Advanced, low power, sub-micron CMOS process 2) ICS552-01 (B mode) a Dual 1:4 buffer ICS552-01 (for C mode) 3) ICS552-01 (C mode) a 1:8 Oscillator buffer Use with 25 MHz crystal for networking Features (all) Use with 27 MHz crystal for MPEG Packaged as 20-pin SSOP (QSOP) ICS552-01 (for A and C modes) Pb-free packaging Input frequency of 10.0 to 27.0 MHz Operating voltages of 3.0 V to 5.5 V Provides 8 low-skew outputs (<250 ps) Industrial temperature available Output clock duty cycle of 40/60 at 3.3 V Features (specific) NOTE: The ICS552A-01 is recommended for new designs ICS552-01 (for A mode) Contains on-chip multiplier with selections of x1, x1.33, x2, x2.66, x3, x3.33, x4, x4.66, x5, and x6 Block Diagram (ICS552-01A mode) VDD 4 CLK1 S3:S0 CLK2 CLK3 CLK4 PLL Multiplier CLK5 10.0 to 27.0 MHz crystal or clock input CLK6 X1 CLK7 Crystal Buffer/ CLK8 Crystal Oscillator X2 GND External capacitors are required with a crystal input. IDT / ICS OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 1 ICS552-01 REV H 051310ICS552-01 OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS CLOCK MULTIPLIER AND BUFFER Multiplier Select Table Pin Assignment (ICS552-01A mode) S3 S2 S1 S0 Multiplier DC 1 20 S0 0 0 0 0 Power Down X2 2 19 DC 00 0 1 x1 X1/ICLK 3 18 CLK8 4 17 00 1 0 x1.333 VDD CLK7 5 16 VDD S2 00 1 1 x2 GND 6 15 S3 01 0 0 x2.666 CLK1 7 14 GND 01 0 1 x3 CLK2 8 13 CLK6 01 1 0 x3.333 CLK3 9 12 CLK5 01 1 1 x4 CLK4 10 11 S1 10 0 0 x5 20-pin (150 mil) SSOP (QSOP) 1 0 0 1 x4.66 10 1 0 x6 1 1 0 1 Tri-state all Pin Descriptions (ICS552-01A mode) Pin Pin Pin Pin Description Number Name Type 1 DC Do not connect. 2 X2 XO Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal. Crystal connection. Connect to a 10 - 27 MHz fundamental mode crystal or 3X1/ICLK XI clock. 4 VDD Power Connect to +3.3 V or 5 V. Decouple with pin 6. Must be same as other VDDs. Multiplier Select pin 2 per table above. 5 S2 Input 6 GND Power Connect to ground. 7 CLK1 Output Output clock 1. 8 CLK2 Output Output clock 2. 9 CLK3 Output Output clock 3. 10 CLK4 Output Output clock 4. 11 S1 Input Multiplier Select pin 1 per table above 12 CLK5 Output Output clock 5. 13 CLK6 Output Output clock 6. 14 GND Power Connect to ground. 15 S3 Input Multiplier Select pin 3 per table above Connect to +3.3 V or 5 V. Decouple with pin 14. Must be same as other VDDs. 16 VDD Power 17 CLK7 Output Output clock 7. 18 CLK8 Output Output clock 8. Do not connect. 19 DC 20 S0 Input Multiplier Select pin 0 per table above IDT / ICS OSCILLATOR, MULTIPLIER, AND BUFFER WITH 8 OUTPUTS 2 ICS552-01 REV H 051310