DATASHEET USER CONFIGURABLE DIVIDER ICS674-01 Description Features The ICS674-01 consists of two separate configurable Packaged in 28-pin SSOP (150 mil body) dividers. The A Divider is a 7-bit divider and can divide by 3 Pb (lead) free package, RoHS compliant to 129. The B Divider consists of a 9-bit divider followed by General purpose programmable divider a post divider. The 9-bit divider can divide by 12 to 519. The post divider has eight settings of 1, 2, 4, 5, 6, 7, 8, and 10 Supports ICS673 PLL Building Block giving a maximum total divide of 5190. The A and B User determines the divide by setting input pins Dividers can be cascaded to give a maximum divide of Pull-ups on all select inputs 669510. The ICS674-01 supports the ICS673 PLL Building Block and enables the user to build a full custom PLL Includes one 7-bit Divider for OUTA synthesizer. Includes one 9-bit Divider and one selectable Post Divider for OUTB Industrial temperature range available 25 mA drive capability at TTL levels Advanced, low power CMOS process Operating voltage of 3.3 V or 5 V Block Diagram A6:A0 VDD 7 2 Divider A OUTA INA (7-Bit) Divider B Post INB OUTB (9-Bit) Divider 3 9 3 GND B8:B0 S2:S0 IDT / ICS USER CONFIGURABLE DIVIDER 1 ICS674-01 REV H 051310ICS674-01 USER CONFIGURABLE DIVIDER CLOCK DIVIDER Pin Assignment Post Divider Table A5 1 28 A4 S2 S1 S0 Post Divide A6 2 27 A3 Pin 5 Pin 4 Pin 3 S0 3 26 A2 000 10 S1 4 25 A1 001 2 S2 5 24 A0 010 8 VDD 6 23 VDD 011 4 INA 7 22 OUTA 100 5 INB 8 21 OUTB GND 9 20 GND 101 7 B0 10 19 GND 110 1 B1 11 18 B8 111 6 B2 12 17 B7 B3 13 16 B6 B4 14 15 B5 28 pin (150 mil) SSOP Pin Descriptions Pin Pin Pin Type Pin Description Number Name 1, 2, 24 - 28 A5, A6, A0-A4 Input Divider A word input pins. Forms a number from 1 to 127. Internal pull-up resistors. See page 3 for details. 3 - 5 S0, S1, S2 Input Select pins for Post Divider. See table above. Internal pull-up resistors. 6, 23 VDD Power Connect to VDD. 7 INA Input Divider A input. 8 INB Input Divider B input. 9, 19 - 20 GND Power Connect to ground. 10 - 18 B0 - B8 Input Divider B word input pins. Forms a number from 4 to 511. Internal pull-up resistors. See page 3 for details. 21 OUTB Output Divider B output. 22 OUTA Output Divider A output. IDT / ICS USER CONFIGURABLE DIVIDER 2 ICS674-01 REV H 051310