Micrel, Inc. Precison Edge® SY10ELT21 Precision Edge® SY100ELT21 DIFFERENTIAL PECL-to-TTL TRANSLATOR SY10ELT21 SY100ELT21 FEATURES 2.5ns typical propagation delay Low power Differential PECL inputs 24mA TTL outputs Flow-through pinouts Available in 8-pin SOIC package Precision Edge® DESCRIPTION The SY10/100ELT21 are single differential PECL-toTTL translators. Because PECL (Positive ECL) levels are used, only +5V and ground are required. The small outline 8-lead SOIC package and low skew single gate design make the ELT21 ideal for applications that require the translation of a clock or data signal where minimal space, low power, and low cost are critical. The VBB output allow differential single-ended, or ACcoupled interface to the device. If used, the VBB output should be bypassed to VCC with a 0.01µF capacitor. The ELT21 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 NAMES Pin Function Q TTL Output D, /D Differential PECL Inputs VCC +5.0V Supply VBB Reference Output GND Ground Precision Edge is a registered trademark of Micrel, Inc. M9999-031506 [email protected] or (408) 955-1690 Rev.: C 1 Amendment: /0 Issue Date: March 2006 Precision Edge® SY10ELT21 SY100ELT21 Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) NC 1 TTL D 2 Package Marking Lead Finish SY10ELT21ZC Z8-1 Commercial HEL21 Sn-Pb SY10ELT21ZCTR(2) Z8-1 Commercial HEL21 Sn-Pb SY100ELT21ZC Z8-1 Commercial XEL21 Sn-Pb SY100ELT21ZCTR(2) Z8-1 Commercial XEL21 Sn-Pb SY10ELT21ZI Z8-1 Industrial HEL21 Sn-Pb SY10ELT21ZITR(2) Z8-1 Industrial HEL21 Sn-Pb SY100ELT21ZI Z8-1 Industrial XEL21 Sn-Pb SY100ELT21ZITR(2) Z8-1 Industrial XEL21 Sn-Pb SY10ELT21ZG(3) Z8-1 Industrial HEL21 with Pb-Free bar-line indicator Pb-Free NiPdAu SY10ELT21ZGTR(2, 3) Z8-1 Industrial HEL21 with Pb-Free bar-line indicator Pb-Free NiPdAu SY100ELT21ZG(3) Z8-1 Industrial XEL21 with Pb-Free bar-line indicator Pb-Free NiPdAu SY100ELT21ZG(TR(2, 3) Z8-1 Industrial XEL21 with Pb-Free bar-line indicator Pb-Free NiPdAu 7 Q 6 NC VBB 4 Operating Range Part Number PECL D 3 Package Type 8 VCC 5 GND 8-Pin SOIC (Z8-1) Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only. 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. M9999-031506 [email protected] or (408) 955-1690 2 Precison Edge® SY10ELT21 SY100ELT21 Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Parameter VCC Power Supply Voltage VI PECL Input Voltage VO Voltage Applied to Output at HIGH State IO Current Applied to Output at LOW State TLEAD Lead Temperature (soldering, 20sec.) Tstore TA TRUTH TABLE Value Unit D /D Q –0.5 to +7.0 V L H L 0V to VCC+0.5 –0.5 to +5.5 V H L H V Open Open L Twice the Rated IOL mA +260 °C Storage Temperature –65 to +150 °C 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. TTL DC ELECTRICAL CHARACTERISTICS VCC = 4.75V to 5.25V TA = –40°C Symbol TA = 0°C TA = +25°C TA = +85°C Parameter Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit Condition IOS Output Short Circuit Current –80 –200 –80 –200 –80 — –200 –80 –200 mA ICC Power Supply Current — 20 — 20 — 14 20 — 20 mA — VOH Output HIGH Voltage 2.5 2.0 — — 2.5 2.0 — — 2.5 2.0 — — — — 2.5 2.0 — — V V IOH = –3.0mA IOH = –15mA VOL Output LOW Voltage — 0.5 — 0.5 — — 0.5 — 0.5 V IOL = 24mA VOUT = 0V PECL DC ELECTRICAL CHARACTERISTICS VCC = 4.75V to 5.25V TA = –40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit IIH Input HIGH Current — 150 — 150 — — 150 — 150 µA IIL Input LOW Current 0.5 — 0.5 — 0.5 — — 0.5 — µA Voltage(2) VIH Input HIGH 10ELT 100ELT 3770 4110 3835 4120 3830 4160 3835 4120 3870 3835 — 4190 4120 3940 4280 3835 4120 mV VIL Input LOW Voltage(2) 10ELT 100ELT 3050 3500 3190 3525 3050 3520 3190 3525 3050 3190 — — 3520 3525 3050 3555 3190 3525 mV VBB Reference Output(2) 3570 3700 3620 3740 3620 3730 3620 3740 3650 3620 — — 3750 3740 3690 3810 3620 3740 mV 10ELT 100ELT NOTE: 2. These values are for VCC = 5.0V. Level Specifications will vary 1:1 VCC. M9999-031506 [email protected] or (408) 955-1690 3 Condition Precision Edge® SY10ELT21 SY100ELT21 Micrel, Inc. AC ELECTRICAL CHARACTERISTICS VCC = 4.75V to 5.25V TA = –40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Typ. Max. Min. Max. Unit Condition tPLH tPHL Propagation Delay D to Output Q 2.0 3.0 2.0 3.0 2.0 — 3.0 2.0 3.0 ns CL = 50pF tskpp Part-to-Part Skew(1, 2) — 0.5 — 0.5 — — 0.5 — 0.5 ns CL = 50pF fMAX Maximum Input Frequency 160 — 160 — 160 — — 160 — MHz CL = 50pF VCMR Common Mode Range 2.4 VCC 2.4 VCC 2.4 — VCC 2.4 VCC V 200 — 200 — 200 — — 200 — mV — 1.5 — 1.5 — — 1.5 — 1.5 ns (2, 3, 4) VPP Minimum Peak-to-Peak tr tf Output Rise/Fall Time (1.0V to 2.0V) Input(5) CL = 50pF NOTES: 1. Part-to-Part Skew considering HIGH-to-HIGH transitions at common VCC levels. 2. These parameters are guaranteed, but not tested. 3. Frequency at which output levels will meet a 0.8V to 2.0V minimum swing. 4. The fMAX value is specified as the minimum guaranteed maximum frequency. Actual operational maximum frequency may be greater. 5. 200mV input guarantees full logic at output. M9999-031506 [email protected] or (408) 955-1690 4 Precison Edge® SY10ELT21 SY100ELT21 Micrel, Inc. 8 LEAD SOIC .150" WIDE (Z8-1) Rev. 03 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2006 Micrel, Incorporated. M9999-031506 [email protected] or (408) 955-1690 5