3.3V DUAL DIFFERENTIAL LVPECL-to-LVTTL TRANSLATOR FEATURES ■ ■ ■ ■ ■ ■ ■ DESCRIPTION 3.3V power supply 2.0ns typical propagation delay <500ps typical output-to-output skew Differential LVPECL inputs 24mA LVTTL outputs Flow-through pinouts Available in 8-pin SOIC package The SY10/100ELT23L are dual differential LVPECLto-LVTTL translators with +3.3V power supply. Because LVPECL (Low Voltage Positive ECL) levels are used, only +3.3V and ground are required. The small outline 8lead SOIC package and the low skew, dual gate design of the ELT23L makes it ideal for applications which require the translation of a clock and a data signal. The ELT23L is available in both ECL standards: the 10ELT is compatible with positive ECL 10H logic levels, while the 100ELT is compatible with positive ECL 100K logic levels. PIN CONFIGURATION/BLOCK DIAGRAM PIN NAMES Pin 1 8 /D0 2 7 /D1 3 6 Q1 D1 4 5 GND D0 ClockWorks™ SY10ELT23L SY100ELT23L LVPECL VCC Q0 LVTTL Function Qn LVTTL Outputs Dn Differential LVPECL Inputs VCC +3.3V Supply GND Ground Rev.: G 1 Amendment: 0 Issue Date: July 2000 ClockWorks™ SY10ELT23L SY100ELT23L Micrel ABSOLUTE MAXIMUM RATINGS(1) Symbol TRUTH TABLE Value Unit D D Q –0.5 to +3.8 V L H L 0V to VCC+0.5 V H L H Open Open L Paramter VCC Power Supply Voltage VI PECL Input Voltage VO Voltage Applied to Output at HIGH State –0.5 to VCC V IO Current Applied to Output at LOW State Twice the Rated IOL mA Tstore Storage Temperature –65 to +150 °C Tamb Operating Temperature –40 to +85 °C NOTE: 1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to ABSOLUTE MAXIMUM RATlNG conditions for extended periods may affect device reliability. LVTTL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±5% TA = -40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition VOH Output HIGH Voltage 2.0 — 2.0 — 2.0 — 2.0 — V IOH = –3.0mA VOL Output LOW Voltage — 0.5 — 0.5 — 0.5 — 0.5 V IOL = 24mA ICC Power Supply Current — 30 — 30 — 30 — 30 mA IOS Output Short Circuit Current –80 –240 –80 –240 –80 –240 –80 –240 mA VOUT = 0V LVPECL DC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±5% TA = -40°C Symbol Parameter TA = 0°C Min. Typ. Max. TA = +25°C Min. Typ. Max. TA = +85°C Min. Typ. Max. Min. Typ. Max. Unit IIH Input HIGH Current — — 150 — — 150 — — 150 — — 150 µA IIL Input LOW Current 0.5 — — 0.5 — — 0.5 — — 0.5 — — µA VCMR Common Mode Range 1.5 — VCC 1.5 — VCC 1.5 — VCC 1.5 — VCC V VPP Minimum Peak-to-Peak Input(1) 200 — — 200 — — 200 — — 200 — — VIH Input HIGH Voltage(2) 10ELT 2070 100ELT 2135 — — 2410 2420 2130 2135 — — 2460 2420 2170 2135 — — 2490 2420 2130 2135 — — 2565 2420 Input LOW Voltage(2) 10ELT 1350 100ELT 1490 — — 1800 1825 1350 1490 — — 1820 1825 1350 1490 — — 1820 1825 1350 1490 — — 1820 1825 VIL mV mV mV NOTES: 1. 200mV input guarantees full logic at output. 2. These values are for VCC = 3.3V. Level Specifications will vary 1:1 with VCC. 2 ClockWorks™ SY10ELT23L SY100ELT23L Micrel AC ELECTRICAL CHARACTERISTICS VCC = +3.3V ±5% TA = –40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition tPLH tPHL Propagation Delay 1.5 2.5 1.5 2.5 1.5 2.5 1.5 2.5 ns CL = 20pF tskpp Part-to-Part Skew(1,4) — 0.5 — 0.5 — 0.5 — 0.5 ns CL = 20pF Within-Device Skew(2,4) — 0.3 — 0.3 — 0.3 — 0.3 ns CL = 20pF tskew– – Within-Device Skew(3,4) — 0.3 — 0.3 — 0.3 — 0.3 ns CL = 20pF tr tf Output Rise/Fall Time 1.0V to 2.0V 0.5 1.0 0.5 1.0 0.5 1.0 0.5 1.0 ns CL = 20pF fMAX Maximum Input Frequency(5,6) 160 — 160 — 160 — 160 — MHz CL = 20pF tskew++ NOTES: 1. Device-to-Device Skew considering HIGH-to-HIGH transitions at common VCC level. 2. Within-Device Skew considering HIGH-to-HIGH transitions at common VCC level. 3. Within-Device Skew considering LOW-to-LOW transitions at common VCC level. 4. All skew parameters are guaranteed but not tested. 5. Frequency at which output levels will meet a 0.8V to 2.0V minimum swing. 6. The fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater. PRODUCT ORDERING CODE Ordering Code Package Type Operating Range VCC Range (V) SY10ELT23LZC Z8-1 Commercial +3.3 ±5% SY10ELT23LZCTR Z8-1 Commercial +3.3 ±5% SY100ELT23LZC Z8-1 Commercial +3.3 ±5% SY100ELT23LZCTR Z8-1 Commercial +3.3 ±5% 3 ClockWorks™ SY10ELT23L SY100ELT23L Micrel 8 LEAD SOIC .150" WIDE (Z8-1) 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