5V/3.3V TRIPLE ECL/LVECL-TOPECL/LVPECL TRANSLATOR FEATURES ■ ■ ■ ■ ■ DESCRIPTION 3.3V and 5V power supply options 500ps propagation delay Fully differential design Supports both standard and low voltage operation Available in 20-pin SOIC package The SY100EL90V is a triple ECL/LVECL-to-PECL/ LVPECL translator. The device can translate over all combinations of supply voltages: -5V ECL to 5V PECL, -5V ECL to 3.3V LVPECL, -3.3V LVECL to 5V PECL or -3.3V LVECL to 3.3V LVPECL. A VBB output is provided for interfacing with single ended ECL signals at the input. If a single ended input is to be used, the VBB output should be connected to the D input. The active signal would then drive the D input. When used, the VBB output should be bypassed to via a 0.01µF capacitor. The VBB output is designed to act as the switching reference for the EL90V under single ended input switching conditions. As a result this pin can only source/sink up to 0.5mA of current. To accomplish the level translation the EL90V requires three power rails. The VCC supply should be connected to the positive supply, and the V EE pin should be connected to the negative power supply. The GND pins as expected are connected to the system ground plane. Both VEE and VCC should be bypassed to ground via 0.01µF capacitors. Under open input conditions, the D input will be biased at V CC/2 and the D input will be pulled to VEE. This condition will force the Q output to a LOW, ensuring stability. PIN CONFIGURATION/BLOCK DIAGRAM ECL PECL VCC 1 20 VCC Q0 D0 3 18 Q0 VBB 4 17 GND 16 Q1 D1 6 15 Q1 7 14 GND 13 Q2 ECL D2 8 PECL VBB PECL 19 ECL D0 2 D1 5 SY100EL90V D2 9 12 Q2 VEE 10 11 VCC PIN NAMES Pin SOIC TOP VIEW Function Dn ECL/LVECL Inputs Qn PECL/LVPECL Outputs VBB ECL/LVECL Reference Voltage Output FUNCTION TABLE Function VCC GND VEE 5V 0V –5V –5V ECL to 3.3V LVPECL 3.3V 0V –5V –3.3V LVECL to 5V PECL 5V 0V –3.3V 3.3V 0V –3.3V –5V ECL to 5V PECL –3.3V LVECL to 3.3V LVPECL 1 Rev.: F Amendment: /1 Isse Date: October, 1998 SY100EL90V Micrel ECL/LVECL INPUT DC ELECTRICAL CHARACTERISTICS ECL: VEE = –4.2V to –5.5V; LVECL: VEE = –3.0V to –3.8V TA = –40°C Symbol Parameter Min. Typ. TA = 0°C Max. Min. Typ. TA = +25°C Max. Min. Typ. TA = +85°C Max. Min. Typ. Max. Unit VIH Input HIGH Voltage –1165 — –880 –1165 — –880 –1165 — –880 –1165 — –880 mV VIL Input LOW Voltage –1810 — –1475 –1810 — –1475 –1810 — –1475 –1810 — –1475 mV IEE Power Supply Current — — 8 — — 8 — — 8 — — 8 mA IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA IIL Input LOW Current Dn Dn 0.5 –600 — — — — 0.5 –600 — — — — 0.5 –600 — — — — 0.5 –600 — — — — µA VBB Output Reference –1.38 — –1.26 –1.38 — –1.26 –1.38 — –1.26 –1.38 — –1.26 V VPP Minimum Peak-to-Peak Input 150 — — — mV — 150 — — 150 — — 150 LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS VCC = +3.0V to +3.8V TA = –40°C Symbol Parameter Min. Typ. TA = 0°C Max. Min. Typ. TA = +25°C Max. Min. Typ. TA = +85°C Max. Min. Typ. Max. Unit VOH Output HIGH Voltage(1) 2.215 — 2.420 2.275 — 2.420 2.275 2.350 2.420 2.275 — 2.420 V VOL Output LOW Voltage(1) 1.470 — 1.745 1.490 — 1.680 1.490 1.600 1.680 1.490 — 1.680 V ICC Power Supply Current — — — — 26 mA 24 — — 24 — 20 24 NOTE: 1. These levels are for VCC = 3.3V. Level specifications will vary 1:1 with VCC. PECL OUTPUT DC ELECTRICAL CHARACTERISTICS VCC = +4.2V to +5.5V TA = –40°C Symbol Parameter Min. Typ. TA = 0°C Max. Min. Typ. TA = +25°C Max. Min. Typ. TA = +85°C Max. Min. Typ. Max. Unit VOH Output HIGH Voltage(1) 3.915 — 4.120 3.975 — 4.120 3.975 4.050 4.120 3.975 — 4.120 V VOL Output LOW Voltage(1) 3.170 — 3.445 3.190 — 3.380 3.190 3.300 3.380 3.190 — 3.380 V ICC Power Supply Current — — — — 26 mA 24 — — NOTE: 1. These values are for VCC = 5V. Level specifications will vary 1:1 with VCC. 2 24 — 20 24 SY100EL90V Micrel AC ELECTRICAL CHARACTERISTICS ECL: VEE = –4.2V to –5.5V; LVECL: VEE = –3.0V to –3.8V; PECL: VCC = +4.2V to +5.5V; LVPECL: VCC = +3.0V to +3.8V TA = –40°C Symbol Parameter tPLH tPHL Propagation Delay D to Q tskew Within-Device Skew(1) Output-to-Output Part-to-Part (Diff.) Duty Cycle (Diff.) VPP Diff. S.E. Minimum Input Swing(2) Range(3) VCMR Common Mode tr tf Output Rise/Fall Times Q (20% to 80%) TA = 0°C TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit 390 340 — — 590 640 410 360 — — 610 660 420 370 — — 620 670 460 410 — — 660 710 ps — — — 20 — 25 100 200 — — — — 20 — 25 100 200 — — — — 20 — 25 100 200 — — — — 20 — 25 100 200 — ps 150 — — 150 — — 150 — — 150 — — mV — — –0.4 — — –0.4 — — –0.4 — — –0.4 V 230 — 500 230 — 500 230 — 500 230 — 500 ps NOTES: 1. Skew is measured between outputs under identical transitions. 2. Minimum input swing for which AC parameters are guaranteed. The device will function reliably with differential inputs down to 100mV. 3. 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. VCMR min. depends on VEE, VPP and temperature at VPP <500mV and –40˚C, VCMR is VEE+1.3V; and for 0–85˚C, VCMR is VEE+1.2V. At VPP ≥ 500mV and –40˚C, VCMR is VEE+1.5V; and for 0–85˚C, VCMR is VEE+1.4V. PRODUCT ORDERING CODE Ordering Code Package Type Operating Range SY100EL90VZC Z20-1 Commercial SY100EL90VZCTR Z20-1 Commercial 3 SY100EL90V Micrel 20 LEAD SOIC .300" WIDE (Z20-1) Rev. 03 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