ICS580-01 IDT | Alldatasheet

Document overview

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Technical content

Features

  • 16-pin SOIC and 16-pin TSSOP packages available
  • Pb (lead) free package
  • No short pulses or glitches on output
  • Operates from 2 to 220 MHz
  • Low skew outputs
  • Clock detect feature
  • Ideal for systems with back-up or redundant clocks
  • Selectable timeouts for clock detection
  • Separate supply voltages allow power supply voltage translation
  • Operates from 2.5 V to 5 V Block Diagram Transition Detector NO_INB GND INB INA SELB Transition Detector Timer NO_INA OE2 OE1 OE4 OE3 CLK1 CLK2 VDDC DIV VDDI

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 2 ICS580-01 REV L 051310 Pin Assignment Timeout Selection SELB DIV VDDI VDDC INA INB CLK1 CLK2 NO_INA GND NO_INB OE2 OE4 GND OE3 OE1 16 pin (150 mil) SOIC SELB DIV VDDI VDDC INA INB CLK1 CLK2 NO_INA GND NO_INB OE2 OE4 GND OE3 OE1 16-pin TSSOP DIV Nominal Timeout 0 600 ns 1 75 ns

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 3 ICS580-01 REV L 051310 Pin Descriptions Pin Number Pin Name Pin Type Pin Description 1 SELB Input Mux select. Selects INB when high. Internal pull-up. 2 DIV Input Time out select. See table above. Internal pull-up. 3 VDDI Power Supply for input clocks only. Can be higher than VDDC. 4 INA Input Input Clock A. 5 INB Input Input Clock B. 6 GND Power Connect to ground. 7 OE4 Input Output enable. Tri-states NO_INB when low. Internal pull-up. 8 OE3 Input Output enable. Tri-states NO_INA when low. Internal pull-up. 9 OE2 Input Output enable. Tri-states CLK2 when low. Internal pull-up. 10 GND Power Connect to ground. 11 NO_INB Output Goes high when clock on INB stops. 12 NO_INA Output Goes high when clock on INA stops. 13 CLK2 Output Clock 2 output. Low skew compared to CLK1. 14 CLK1 Output Clock 1 output. Low skew compared to CLK2. 15 VDDC Power Main chip supply. Output clocks amplitude will match this VDD. 16 OE1 Input Output enable. Tri-states CLK1 when low. Internal pull-up.

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 5 ICS580-01 REV L 051310 Application Example In the third example, the ICS580-01 is configured to automatically switch clocks when an input stops. The clock that could stop is connected to INA while the backup clock (always running) is connected to INB. The output NO_INA is connected to SELB. This means that when the clock on INA stops, NO_INA goes high selecting the clock on INB which is muxed to the output after three cycles. When the clock on INA restarts, NO_INA immediately goes low, selecting the clock on INA. The output then switches in the manner described in the first example. The circuit diagram in Figure 3 shows a typical connection for this example. Note that CLK2 and NO_INB are unused and are disabled by grounding OE2 and OE4. A 33Ω series termination resistor is used on the clock output and two decoupling capacitors of 0.01µF are used. All other inputs are left floating and are therefore pulled high by the on-chip pull-ups. Output Enable Each output has a dedicated output enable pin. If an output is unused, it should be tri-stated by tying the appropriate output enable pin to ground. External Components The ICS580-01 requires two 0.01µF decoupling capacitors, one between VDDI and GND and one between VDDC and GND. Series termination resistors of 33Ω can be used on CLK1 and CLK2. NO_INA SELB NO_INB DIV GND VDDI OE2 INA INB GND OE4 OE3 OE1 VDDC CLK1 CLK2 VDD 0.01µF 33Ω0.01µF Normal Clock Backup Clock Output Clock

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 6 ICS580-01 REV L 051310 Split Power Supplies The VDDI pin provides the power for the INA and INB input buffers only. All the other inputs and the rest of the chip are connected to VDDC. This allows for supply voltage translation. For example, INA and INB could be 5V clocks (VDDI = 5V) and the rest of the chip could use a 3.3V supply on VDDC giving 3.3V output clocks. For correct operation VDDI must always be greater than or equal to VDDC. Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS580-01. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical parameters are guaranteed only over the recommended operating temperature range. Recommended Operation Conditions Unless stated otherwise, VDD = 3.3V ±5%, Ambient Temperature -40 to +85° C Item Rating Supply Voltage, VDD 7V All Inputs and Outputs -0.5V to VDD+0.5V Ambient Operating Temperature 0 to +70 ° C Ambient Operating Temperature -40 to +85 ° C Storage Temperature -65 to +150 ° C Junction Temperature 125 ° C Soldering Temperature 260 ° C Parameter Min. Typ. Max. Units Ambient Operating Temperature 0 +70 ° C Ambient Operating Temperature -40 +85 ° C Power Supply Voltage (measured in respect to GND) +2.5 +5.5 V Parameter Symbol Conditions Min. Typ. Max. Units Operating Voltage VDDC 2.5 5.5 V VDDI VDDC 5.5 V Supply Current IDD 50 MHz, no load 6 mA Input High Voltage V IH Non-clock inputs 2 VDDC V Input Low Voltage V IL Non-clock inputs 0.8 V Input High Voltage V IH INA and INB only Note 3 (VDDC/2)+1 VDDI V

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 7 ICS580-01 REV L 051310 Unless stated otherwise, VDD = 3.3V ±5%, Ambient Temperature -40 to +85° C Note 1. Frequencies less than the minimum may cause a timeout which will not guarantee glitch-free switching unless the clock is actually stopped. Note 2: Assumes identically loaded outputs with identical rise times, measured at VDD/2. Note 3: Output duty cycle is set by duty cycle of input clock at VDDC/2. Input Low Voltage V IL INA and INB only Note 3 (VDDC/2)-1 V Input Capacitance C IN 4p F Output High Voltage V OH IOH = -12 mA VDDC-0.5 V Output Low Voltage V OL IOL = 12 mA 0.5 V Short Circuit Current IOS ±70 mA On-chip pull-up Resistor RPU Non-clock inputs Pull-up to VDDC 250 k Ω Parameter Symbol Conditions Min. Typ. Max. Units Input Frequency INA and INB, Note 1 fIN VDDC = 5V 1/timeout 270 MHz VDDC = 3.3V 1/timeout 220 MHz VDDC = 2.7V 1/timeout 180 MHz Propagation Delay INA or INB to output VDDC = 5V 4 8 ns VDDC = 3.3V 5 10 ns VDDC = 2.7V 6 12 ns Transition Detector Timeout, DIV = 0 VDDI = 5V 175 350 750 ns VDDI = 3.3V 500 1000 2000 ns VDDI = 2.7V 750 1500 3000 ns Transition Detector Timeout, DIV = 1 VDDI = 5V 20 40 80 ns VDDI = 3.3V 55 110 210 ns VDDI = 2.7V 100 200 400 ns Output Clock Rise Time 1.5 ns Output Clock Fall Time 1.5 ns Output Clock Skew CLK1 to CLK2 Note 2 -250 0 250 ps Parameter Symbol Conditions Min. Typ. Max. Units

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 8 ICS580-01 REV L 051310 Thermal Characteristics (16-pin SOIC) Thermal Characteristics (16-pin TSSOP) Parameter Symbol Conditions Min. Typ. Max. Units Thermal Resistance Junction to Ambient θJA Still air 120 ° C/W θJA 1 m/s air flow 115 ° C/W θJA 3 m/s air flow 105 ° C/W Thermal Resistance Junction to Case θJC 58 ° C/W Parameter Symbol Conditions Min. Typ. Max. Units Thermal Resistance Junction to Ambient θJA Still air 78 ° C/W θJA 1 m/s air flow 70 ° C/W θJA 3 m/s air flow 68 ° C/W Thermal Resistance Junction to Case θJC 37 ° C/W

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 9 ICS580-01 REV L 051310 Marking Diagram (ICS580M-01LF) Marking Diagram (ICS580M-01ILF) Marking Diagram (ICS580G-01LF) Marking Diagram (ICS580G-01ILF) Notes: 2. YYWW is the last two digits of the year and week that the part was assembled. 3. “LF” or “L ” denotes Pb (lead) free package. 4. “I” indicates industrial grade. 4. Bottom marking: country of origin if not USA. 1 8 916 580M01LF YYWW 1 8 916 580M01ILF YYWW 1 8 916 580G01LF YYWW 1 8 916 580G01IL YYWW

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 10 ICS580-01 REV L 051310 Package Outline and Package Dimensions (16-pin SOIC, 150 Mil. Narrow Body) Package dimensions are kept current with JEDEC Publication No. 95 INDEX AREA 1 2 D E SEATING PLANE A e - C - B .10 (.004) C C L H h x 45 Millimeters Inches Symbol Min Max Min Max A 1.35 1.75 .0532 .0688 A1 0.10 0.25 .0040 .0098 B 0 . 3 30 . 5 1. 0 1 3. 0 2 0 C 0.19 0.25 .0075 .0098 D 9.80 10.00 .3859 .3937 E 3.80 4.00 .1497 .1574 e 1.27 BASIC 0.050 BASIC H 5.80 6.20 .2284 .2440 h 0 . 2 50 . 5 0. 0 1 0. 0 2 0 L 0 . 4 01 . 2 7. 0 1 6. 0 5 0 α 0° 8° 0° 8°

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 11 ICS580-01 REV L 051310 Package Outline and Package Dimensions (16-pin TSSOP, 173 Mil. Body) Package dimensions are kept current with JEDEC Publication No. 95 INDEX AREA 1 2 D E1 E SEATING PLANE AA2 e - C - b aaa C c L Millimeters Inches Symbol Min Max Min Max A -- 1.20 -- 0.047 A1 0.05 0.15 0.002 0.006 A2 0.80 1.05 0.032 0.041 b 0.19 0.30 0.007 0.012 C 0.09 0.20 0.0035 0.008 D 4.90 5.1 0.193 0.201 E 6.40 BASIC 0.252 BASIC E1 4.30 4.50 0.169 0.177 e 0.65 Basic 0.0256 Basic L 0.45 0.75 0.018 0.030 α 0° 8° 0° 8°

GLITCH-FREE CLOCK MULITPLEXER CLOCK MULTIPLEXER IDT™ / ICS™ GLITCH-FREE CLOCK MULITPLEXER 12 ICS580-01 REV L 051310

Ordering Information

“LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Device Technology (IDT) assumes no responsibility for either its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by IDT. IDT reserves the right to change any circuitry or specifications without notice. IDT does not authorize or warrant any IDT product for use in life support devices or critical medical instruments. Part / Order Number Marking Shipping Packaging Package Temperature 580M-01LF see page 9 Tubes 16-pin SOIC 0 to +70 ° C 580M-01LFT Tape and Reel 16-pin SOIC 0 to +70 ° C 580M-01ILF Tubes 16-pin SOIC -40 to +85 ° C 580M-01ILFT Tape and Reel 16-pin SOIC -40 to +85 ° C 580G-01LF see page 9 Tubes 16-pin TSSOP 0 to +70 ° C 580G-01LFT Tape and Reel 16-pin TSSOP 0 to +70 ° C 580G-01ILF Tubes 16-pin TSSOP -40 to +85 ° C 580G-01ILFT Tape and Reel 16-pin TSSOP -40 to +85 ° C

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