TRIPLE DIFFERENTIAL 2:1 MULTIPLEXER DESCRIPTION FEATURES ■ Differential D and Q ■ Extended 100E VEE range of –4.2V to –5.5V 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. VBB output for single-ended use 700ps max. propagation delay High frequency outputs Separate and common select Internal 75KΩ input pulldown resistors Available in 28-pin PLCC package H D0b D0b L 2:1 MUX Q0 SEL2 D2a D2a VBB D0a D0a Q0 25 24 23 22 21 20 19 SEL0 D1b D1b H 2:1 MUX L SEL1 26 18 Q2 D1a 27 17 Q2 D1a 28 16 VCC VEE 1 15 Q1 Q1 VBB 2 14 Q1 Q1 D1b 3 13 Q0 D1b 4 12 Q0 TOP VIEW PLCC J28-1 5 6 D0a D1a D1a D2b COMSEL PIN CONFIGURATION D2b BLOCK DIAGRAM SEL0 7 8 9 10 11 D2a D2a H D2b D2b L 2:1 MUX VCCO D0b D0b SEL1 D0a VBB ■ ■ ■ ■ ■ ■ SY10E457 SY100E457 Q2 Q2 PIN NAMES SEL2 Pin COMSEL VBB Function Dn[0:2], Dn[0:2] Differential Data Inputs SEL Individual Select Input COMSEL Common Select Input VBB VBB Reference Output Q[0:2], Q[0:2] Differential Data Outputs VCCO VCC to Output Rev.: C 1 Amendment: /1 Issue Date: February, 1998 SY10E457 SY100E457 Micrel DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0°C Symbol VBB Parameter Output Reference Voltage 10E 100E IIH Input HIGH Current IEE Power Supply Current 10E 100E VPP (DC) Input Sensitivity VCMR Common Mode Range TA = +25°C Min. Typ. Max. –1.38 –1.38 — — — — 150 — — 92 92 50 –1.5 Min. TA = +85°C Typ. Max. Min. Typ. Max. — — –1.25 –1.26 –1.31 –1.38 — — –1.19 –1.26 — — 150 — — 150 110 110 — — 92 92 110 110 — — 92 106 110 127 — — 50 — — 50 — — 0 –1.5 — 0 –1.5 — –1.27 –1.35 –1.26 –1.38 Unit Condition V — µA — mA — — mV 1 0 V 2 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 = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. 375 325 350 375 475 475 500 525 650 700 725 750 375 325 350 375 475 475 500 525 650 700 725 750 375 325 350 375 475 475 500 525 650 700 725 750 Unit Condition ps — tPLH tPHL Propagation Delay to Output D (Diff) D SEL COMSEL tskew Within-Device Skew — 40 — — 40 — — 40 — ps 1 tskew Duty Cycle Skew tPLH–tPHL — ±10 — — ±10 — — ±10 — ps 2 VPP (AC) Minimum Input Swing 150 — — 150 — — 150 — — mV 3 tr tf Rise/Fall Time 20–80% 150 275 450 150 275 450 150 275 450 ps — 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 2 Package Type Operating Range SY10E457JC J28-1 Commercial SY10E457JCTR J28-1 Commercial SY100E457JC J28-1 Commercial SY100E457JCTR J28-1 Commercial SY10E457 SY100E457 Micrel 28 LEAD PLCC (J28-1) Rev. 03 3 SY10E457 SY100E457 Micrel MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA + 1 (408) 980-9191 FAX + 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. © 2000 Micrel Incorporated 4