5V/3.3V DUAL DIFFERENTIAL 2:1 MULTIPLEXER FEATURES ■ ■ ■ ■ ■ ■ DESCRIPTION 3.3V and 5V power supply options 440ps propagation delay Separate and common select High bandwidth output transitions Internal 75KΩ input pull-down resistors Available in 20-pin SOIC package The SY100EL56V is a dual, fully differential 2:1 multiplexer. The differential data path makes the device ideal for multiplexing low skew clock or other skew sensitive signals. Multiple VBB pins are provided to ease AC coupling input signals. The device features both individual and common select inputs to address both data path and random logic applications. The differential inputs have special circuitry which ensures device stability under open input conditions. When both differential inputs are left open the D input will pull down to VEE, the /D input will bias around VCC/2 forcing the Q output LOW. TRUTH TABLE PIN CONFIGURATION/BLOCK DIAGRAM D0a 1 20 D0a 2 19 Q0 VBB0 3 18 Q0 17 SEL0 D0b 5 16 COM_SEL D1a 6 15 SEL1 D1a 14 VCC 7 VBB1 8 11 H a L b Pin 12 Q1 D1b 10 Data PIN NAMES 13 Q1 9 SEL VCC D0b 4 D1b SY100EL56V Function D0a–D1a Input Data a D0b–D1b Input Data b SEL0–SEL1 Individual Select Input COM_SEL Common Select Input Q0–Q1 True Outputs /Q0–/Q1 Inverted Outputs VEE SOIC TOP VIEW Rev.: C 1 Amendment: /1 Issue Date: May 2000 Micrel SY100EL56V DC ELECTRICAL CHARACTERISTICS(1) VEE =VEE (Min) to VEE (Max); VCC = GND TA = -40°C Symbol TA = 0°C TA = +25°C TA = +85˚C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit IEE Power Supply Current — 20 24 — 20 24 — 20 24 — 20 24 mA VBB Output Reference Voltage –1.38 — — –1.26 V IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA IIL Input LOW Current 0.5 –600 — — — — 0.5 –600 — — — — 0.5 –600 — — — — 0.5 –600 — — — — 50 — — 50 — — 50 — — 50 — — — –1.26 –1.38 — –1.26 –1.38 µA Dn Dn VPP(DC) –1.26 –1.38 Input Sensitivity(2) mV NOTES: 1. Parametric values specifed at: 100EL56V Series: (–3.0V to –3.8V) or (–4.2V to –5.5V) 2. Differential input voltage required to obtain a full ECL swing on the outputs. AC ELECTRICAL CHARACTERISTICS VEE =VEE (Min) to VEE (Max); VCC = GND TA = -40°C Symbol Parameter tPLH tPHL Propagation Delay to Output D (Diff) D (SE) SEL COM_SEL tSKEW Within Device Skew(1) Duty Cycle Skew(2) VPP(AC) Minimum Input Swing(3) VCMR tr tf TA = 0°C TA = +25°C TA = +85˚C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit 340 290 430 430 — — — — 540 590 730 730 350 300 440 440 — — — — 550 600 740 740 360 310 440 440 — — — — 560 610 740 740 380 330 450 450 — — — — 580 630 750 750 ps — — 40 — 80 100 — — 40 — 80 100 — — 40 — 80 100 — — 40 — 80 100 ps ps 150 — 1000 150 — 1000 150 — 1000 150 — 1000 mV Common Mode Range VEE = –3.0V to –3.8V(4) VPP < 500mV VPP ≥ 500mV –2.0 –1.8 — — –0.4 –0.4 –2.1 –1.9 — — –0.4 –0.4 –2.1 –1.9 — — –0.4 –0.4 –2.1 –1.9 — — –0.4 –0.4 VEE = –4.2V to –5.5V(5) VPP < 500mV VPP ≥ 500mV –3.2 –3.0 — — –0.4 –0.4 –3.3 –3.1 — — –0.4 –0.4 –3.3 –3.1 — — –0.4 –0.4 –3.3 –3.1 — — –0.4 –0.4 200 — 540 200 — 540 200 — 540 200 — 540 Output Rise/Fall Times Q (20% –80%) V ps NOTES: 1. Within device skew is defined as identical transitions on similar paths through a device. 2. Duty cycle skew is defined 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. 4. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP (min) and 1V. The lower end of the CMR range varies 1:1 with VEE. The numbers in the spec table assume a nominal VEE = –3.3V. Note for PECL operation, the VCMR (min) will be fixed at 3.3V – |VCMR (min)|. 5. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the PRODUCT ORDERING CODE specified range and the peak-to-peak voltage lies between VPP (min) and 1V. The lower end of the CMR range varies 1:1 with VEE. The numbers in the spec table assume a nominal VEE = –4.5V. Note for PECL operation, Ordering Package Operating the VCMR (min) will be fixed at 5.0V – |VCMR (min)|. Code 2 Type Range SY100EL56VZC Z20-1 Commercial SY100EL56VZCTR Z20-1 Commercial Micrel SY100EL56V 20 LEAD SOIC .300" WIDE (Z20-1) Rev. 03 3 Micrel SY100EL56V 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