ICS85322I ICST | Alldatasheet

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www.icst.com/products/hiperclocks.html REV. B OCTOBER 7, 2003 Integrated Circuit Systems, Inc. ICS85322I DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR GENERAL DESCRIPTION The ICS85322I is a Dual LVCMOS / LVTTL-to- Differential 2.5V / 3.3V LVPECL translator and a member of the HiPerClocks™ family of High Per- formance Clocks Solutions from ICS. The ICS85322I has selectable single ended clock in- puts. The single ended clock input accepts LVCMOS or LVTTL input levels and translate them to 2.5V / 3.3V LVPECL levels. The small outline 8-pin SOIC package makes this device ideal for applications where space, high performance and low power are important.

FEATURES

  • 2 differential 2.5V/3.3V LVPECL outputs
  • Selectable CLK0, CLK1 LVCMOS/LVTTL clock inputs
  • CLK0 and CLK1 can accepts the following input levels: LVCMOS or LVTTL
  • Maximum output frequency: 267MHz
  • Part-to-part skew: 250ps (maximum)
  • 3.3V operating supply voltage (operating range 3.135V to 3.465V)
  • 2.5V operating supply voltage (operating range 2.375V to 2.625V)
  • -40°C to 85°C ambient operating temperature BLOCK DIAGRAM PIN ASSIGNMENT ICS85322I 8-Lead SOIC 3.90mm x 4.92mm x 1.37mm body package M Package Top View nQ0 nQ1 nQ0 nQ1 CLK0 CLK1 HiPerClockS™ ICS VCC CLK0 CLK1 VEE

TABLE 1. PIN DESCRIPTIONS TABLE 2. PIN CHARACTERISTICS

www.icst.com/products/hiperclocks.html REV. B OCTOBER 7, 2003 Integrated Circuit Systems, Inc. ICS85322I DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR TABLE 3A. POWER SUPPLY DC CHARACTERISTICS, VCC = 3.3V±5%, TA = -40°C TO 85°C TABLE 3B. LVCMOS / LVTTL DC CHARACTERISTICS, VCC = 3.3V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V C C e g a tlo V ylp p u S e vitis o P V I E E t n e rr u C ylp p u S r e w o P A m l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V H I e g a tlo V h gi H t u p n I K L C K L C V C C V V L I e g a tlo V w o L t u p n I K L C K L C V I H I t n e rr u C h gi H t u p n I K L C K L C V C C V N I V A µ I L I t n e rr u C w o L t u p n I K L C K L C V C C V N I V A µ TABLE 3C. LVPECL DC CHARACTERISTICS, VCC = 3.3V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V H O E T O N e g a tlo V h gi H t u p t u O V C C V N I V V C C V C C V V L O E T O N e g a tlo V w o L t u p t u O V C C V N I V V C C V C C V V G N I W S g ni w S e g a tlo V t u p t u O k a e P o k a e P V h ti w d e t a ni m r e t st u p t u O E T O N Ω V o t C C V ABSOLUTE MAXIMUM RATINGS Supply Voltage, VCC 4.6V Inputs, VI -0.5V to VCC + 0.5 V Outputs, IO Continuous Current 50mA Surge Current 100mA Package Thermal Impedance, θJA 112.7°C/W (0 lfpm) Storage Temperature, TSTG -65°C to 150°C NOTE: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These ratings are stress specifications only. Functional operation of product at these conditions or any conditions be- yond those listed in the DC Characteristics or AC Character- istics is not implied. Exposure to absolute maximum rating conditions for extended periods may affect product reliability. TABLE 4A. AC CHARACTERISTICS, VCC = 3.3V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U f X A M y c n e u q e r F t u p t u O z H M t D P E T O N ale D n oit a g a p o r P ƒ ≤ z H M s n t p p k s E T O N w e k S tr a P o t-tr a P s p tR t F e m i T lla F e si R t u p t u O z H M o t s p c d o elc y C yt u D t u p t u O e si w r e h t o d e t o n s s eln u z H M t a d e r u s a e m s r e t e m a r a p ll A V m o rf d e r u s a e M E T O N C C nio p g nis s o r c t u p t u o lait n e r e ffid e h t o t t u p ni e h t f o t nio p d a olla u q e h ti w d n a s e g a tlo v ylp p u s e m a s e h t t a g nit a r e p o s e civ e d t n e r e ffid n o st u p t u o n e e w t e b w e k s s a d e nif e D E T O N .st nio p s s o r c lait n e r e ffid e h t t a d e r u s a e m e r a st u p t u o e h t e civ e d h c a e n o st u p ni f o e p yt e m a s e h t g nis U n oitid n o c d r a d n a t S C E D E J h ti w e c n a d r o c c a ni d e nif e d si r e t e m a r a p sih T E T O N

www.icst.com/products/hiperclocks.html REV. B OCTOBER 7, 2003 Integrated Circuit Systems, Inc. ICS85322I DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR TABLE 3D. POWER SUPPLY DC CHARACTERISTICS, VCC = 2.5V±5%, TA = -40°C TO 85°C TABLE 3E. LVCMOS / LVTTL DC CHARACTERISTICS, VCC = 2.5V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V C C e g a tlo V ylp p u S e vitis o P V I E E t n e rr u C ylp p u S r e w o P A m l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V H I e g a tlo V h gi H t u p n I K L C K L C V C C V V L I e g a tlo V w o L t u p n I K L C K L C V I H I t n e rr u C h gi H t u p n I K L C K L C V C C V N I A µ I L I t n e rr u C w o L t u p n I K L C K L C V C C V N I A µ TABLE 3F. LVPECL DC CHARACTERISTICS, VCC = 2.5V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U V H O E T O N e g a tlo V h gi H t u p t u O V C C V C C V V L O E T O N e g a tlo V w o L t u p t u O V C C V C C V V G N I W S g ni w S e g a tlo V t u p t u O k a e P o k a e P V h ti w d e t a ni m r e t st u p t u O E T O N Ω V o t C C V TABLE 4B. AC CHARACTERISTICS, VCC = 2.5V±5%, TA = -40°C TO 85°C l o b m y S r e t e m a r a P s n o iti d n o C t s e T m u m i n i M l a c i p y T m u m i x a M s ti n U f X A M y c n e u q e r F t u p t u O z H M t D P E T O N ale D n oit a g a p o r P ƒ ≤ z H M s n t p p k s E T O N w e k S tr a P o t-tr a P s p tR t F e m i T lla F e si R t u p t u O z H M o t s p c d o elc y C yt u D t u p t u O e si w r e h t o d e t o n s s eln u z H M t a d e r u s a e m s r e t e m a r a p ll A V m o rf d e r u s a e M E T O N C C nio p g nis s o r c t u p t u o lait n e r e ffid e h t o t t u p ni e h t f o t nio p d a olla u q e h ti w d n a s e g a tlo v ylp p u s e m a s e h t t a g nit a r e p o s e civ e d t n e r e ffid n o st u p t u o n e e w t e b w e k s s a d e nif e D E T O N .st nio p s s o r c lait n e r e ffid e h t t a d e r u s a e m e r a st u p t u o e h t e civ e d h c a e n o st u p ni f o e p yt e m a s e h t g nis U n oitid n o c d r a d n a t S C E D E J h ti w e c n a d r o c c a ni d e nif e d si r e t e m a r a p sih T E T O N

www.icst.com/products/hiperclocks.html REV. B OCTOBER 7, 2003 Integrated Circuit Systems, Inc. ICS85322I DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR PARAMETER MEASUREMENT INFORMATION PART-TO-PART SKEW 2.5V OUTPUT LOAD AC TEST CIRCUIT 3.3V OUTPUT LOAD AC TEST CIRCUIT SCOPE Qx nQx LVPECL tPD PROPAGATION DELAY OUTPUT RISE/FALL TIME OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD -1.3V ± 0.165V tsk(o) nQx Qx nQy Qy Clock Outputs 20% 80% 80% 20% tR tF VSWING Pulse Width tPERIOD tPW tPERIOD odc = Q0, Q1 nQ0, nQ1 CLK0, CLK1 Q0, Q1 nQ0, nQ1 SCOPE Qx nQx LVPECL -0.5V ± 0.125V PART 1 PART 2 VCC VEE VCC VEE

This section provides information on power dissipation and junction temperature for the ICS85322I. Equations and example calculations are also provided. The total power dissipation for the ICS85322I is the sum of the core power plus the power dissipated in the load(s). The following is the power dissipation for VCC = 3.3V + 5% = 3.465V, which gives worst case results. NOTE: Please refer to Section 3 for details on calculating power dissipated in the load. device. The maximum recommended junction temperature for HiPerClockSTM devices is 125°C. moderate air flow of 200 linear feet per minute and a multi-layer board, the appropriate value is 103.3°C/W per Table 5 below. and the type of board (single layer or multi-layer). NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs. TABLE 5. THERMAL RESISTANCE θθθθθJA FOR 8-PIN SOIC, FORCED CONVECTION

  1. Calculations and Equations.

The purpose of this section is to derive the power dissipated into the load. LVPECL output driver circuit and termination are shown in Figure 3. Pd_H is power dissipation when the output drives high. Pd_L is the power dissipation when the output drives low. FIGURE 3. LVPECL DRIVER CIRCUIT AND TERMINATION

TABLE 6. θJAVS. AIR FLOW TABLE FOR 8 LEAD SOIC NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.

TABLE 7. PACKAGE DIMENSIONS

TABLE 8. ORDERING INFORMATION for use in life support devices or critical medical instruments.

www.icst.com/products/hiperclocks.html REV. B OCTOBER 7, 2003 Integrated Circuit Systems, Inc. ICS85322I DUAL LVCMOS / LVTTL-TO-DIFFERENTIAL 2.5V / 3.3V LVPECL TRANSLATOR T E E H S Y R O T S I H N O I S I V E R v e R e l b a T e g a P e g n a h C f o n o it p ir c s e D e t a D A n oitc e s st u p t u O L C E P V L r o f n oit a ni m r e T d e d d A A V d e tc e rr o c m a r g ai D tiu c ri C ts e T d a o L t u p t u O V E E V V V d a e r o t E E V V m a r g ai D e m i T lla F e si R t u p t u O d e t a d p U B T C d e g n a h c elb a T s citsir e tc a r a h C ni P N I .la cip yt F p o t.x a m F p g nit a r st u p n I d e t a d p u g nit a R m u m ix a M e t ulo s b A m a r g ai D n oit a ni m r e T t u p t u O L C E P V L V d e t a d p U .st u p t u O L C E P V L V r o f n oit a ni m r e T d e d d A e e h s a t a d t u o h g u o r h t t a m r o f d e t a d p U