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| TRIPLE DIFFERENTIAL 2:1 MULTIPLEXER SY10E457 SY100E457 FEATURES s Differential D and Q s Extended 100E VEE range of -4.2V to -5.5V s s s s s s VBB output for single-ended use 700ps max. propagation delay High frequency outputs Separate and common select Internal 75K input pulldown resistors Available in 28-pin PLCC package DESCRIPTION The SY10/100E457 are 3-bit differential 2:1 multiplexers. The fully differential data path makes the devices ideal for multiplexing low skew clock or other skew sensitive signals. Multiple VBB pins are provided to ease AC coupling input signals. The higher frequency outputs provide the device with a >1.0GHz bandwidth to meet the needs of the most demanding system clock. Both separate selects and a common select are provided to make the device well suited for both data path and random logic applications. BLOCK DIAGRAM PIN CONFIGURATION H 2:1 MUX SEL2 D2a D2a VBB Q0 Q0 D0b D0b SEL0 L 25 24 23 22 21 20 19 SEL1 D1a D1a D2b COMSEL D0a D0a D2b 26 27 28 1 2 3 4 5 6 7 8 9 10 11 18 17 Q2 Q2 VCC Q1 Q1 Q0 Q0 D1a D1a D1b D1b SEL1 H 2:1 MUX VEE Q1 Q1 VBB D1b D1b TOP VIEW PLCC J28-1 16 15 14 13 12 L D0a D2a D2a D2b D2b SEL2 H 2:1 MUX Q2 Q2 L PIN NAMES Pin Dn[0:2], Dn[0:2] Function Differential Data Inputs Individual Select Input Common Select Input VBB Reference Output Differential Data Outputs VCC to Output COMSEL VBB SEL COMSEL VBB Q[0:2], Q[0:2] VCCO SEL0 VCCO Rev.: C D0a VBB D0b D0b Amendment: /1 1 Issue Date: February, 1998 Micrel SY10E457 SY100E457 DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0C Symbol VBB Parameter Output Reference Voltage 10E 100E Input HIGH Current Power Supply Current 10E 100E VPP (DC) VCMR Input Sensitivity Common Mode Range -- -- 50 -1.5 92 92 -- -- 110 110 -- 0 -- -- 50 -1.5 92 92 -- -- 110 110 -- 0 -- -- 50 -1.5 92 106 -- -- 110 127 -- 0 mV V 1 2 Min. -1.38 -1.38 -- Typ. -- -- -- Max. Min. TA = +25C Typ. -- -- -- Max. -1.25 -1.26 150 TA = +85C Min. Typ. -1.31 -1.38 -- -- -- -- Max. -1.19 -1.26 150 A mA -- -- Unit V -1.27 -1.35 -1.26 -1.38 150 -- Condition -- IIH IEE NOTES: 1. Differential input voltage required to obtain a full ECL swing on the outputs. 2. VCMR is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the VCMR range and the input swing is greater than VPP (min.) and <1V. AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0C Symbol tPLH tPHL Parameter Propagation Delay to Output D (Diff) D SEL COMSEL Within-Device Skew Duty Cycle Skew tPLH-tPHL Minimum Input Swing Rise/Fall Time 20-80% Min. 375 325 350 375 -- -- 150 150 Typ. 475 475 500 525 40 10 -- 275 Max. 650 700 725 750 -- -- -- 450 TA = +25C Min. Typ. 375 325 350 375 -- -- 150 150 475 475 500 525 40 10 -- 275 Max. 650 700 725 750 -- -- -- 450 TA = +85C Min. Typ. 375 325 350 375 -- -- 150 150 475 475 500 525 40 10 -- 275 Max. 650 700 725 750 -- -- -- 450 ps ps mV ps 1 2 3 -- Unit ps Condition -- tskew tskew VPP (AC) tr tf NOTES: 1. Within-device skew is defined as identical transitions on similar paths through a device. 2. Duty cycle skew guarantee holds only for differential operation when the delays are measured from the cross point of the inputs to the cross point of the outputs. 3. Minimum input swing for which AC parameters are guaranteed. PRODUCT ORDERING CODE Ordering Code SY10E457JC SY10E457JCTR SY100E457JC SY100E457JCTR Package Type J28-1 J28-1 J28-1 J28-1 Operating Range Commercial Commercial Commercial Commercial 2 Micrel SY10E457 SY100E457 28 LEAD PLCC (J28-1) Rev. 03 3 Micrel SY10E457 SY100E457 MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA FAX + 1 (408) 980-9191 + 1 (408) 914-7878 WEB http://www.micrel.com This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel Inc. (c) 2000 Micrel Incorporated 4 |
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