Micrel, Inc. DIFFERENTIAL ECL-to-TTL TRANSLATOR FEATURES ■ ■ ■ ■ ■ SY100ELT25 SY100ELT25 DESCRIPTION 2.6ns typical propagation delay Differential ECL inputs 24mA TTL outputs Flow-through pinouts Available in 8-pin SOIC package The SY100ELT25 is a differential ECL-to-TTL translator. Because ECL levels are used, a +5V, –5.2V (or –4.5V) and ground are required. The small outline 8lead SOIC package and the single gate of the ELT25 makes it ideal for those applications where performance, space and low power are at a premium. The VBB output allows the ELT25 to also be used in a single-ended input mode. In this mode the VBB output is tied to the D input for a non-inverting buffer or the D input for an inverting buffer. If used the VBB pin should be bypassed to ground via a 0.01µF capacitor. PIN NAMES Pin M9999-031506 [email protected] or (408) 955-1690 Function Q TTL Output D Differential ECL Inputs VCC Positive Supply VEE Negative Supply VBB Reference Output GND Ground Rev.: C 1 Amendment: /0 Issue Date: March 2006 Micrel, Inc. SY100ELT25 PACKAGE/ORDERING INFORMATION Ordering Information(1) VEE 1 8 VCC D 2 7 Q D VBB 3 6 4 5 NC GND 8-Pin SOIC (Z8-1) Package Type Operating Range Package Marking Lead Finish SY100ELT25ZC Z8-1 Commercial XEL25 Sn-Pb SY100ELT25ZCTR(2) Z8-1 Commercial XEL25 Sn-Pb SY100ELT25ZI Z8-1 Industrial XEL25 Sn-Pb SY100ELT25ZITR(2) Z8-1 Industrial XEL25 Sn-Pb SY100ELT25ZG(3) Z8-1 Industrial XEL25 with Pb-Free bar-line indicator Pb-Free NiPdAu SY100ELT25ZGTR(2, 3) Z8-1 Industrial XEL25 with with Pb-Free bar-line indicator Pb-Free NiPdAu Part Number 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 Micrel, Inc. SY100ELT25 ABSOLUTE MAXIMUM RATINGS(1) Symbol Paramter TRUTH TABLE Value Unit D D Q –0.5 to +7.0 V L H L VEE to GND+0.5 V H L H Open Open L VCC Power Supply Voltage VIN ECL Input Voltage VOUT Voltage Applied to Output at HIGH State –0.5 to +5.5 V IOUT Current Applied to Output at LOW State Twice the Rated IOL mA TLEAD Lead Temperature (soldering, 20sec.) +260 °C Tstore Storage Temperature –65 to +150 °C TA 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. DC ELECTRICAL CHARACTERISTICS VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V TA = –40°C Symbol Parameter TA = 0°C TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Min. Max. Unit Condition ICC Power Supply Current — 14 — 14 9 14 — 14 mA — IEE Power Supply Current — 14 — 14 5.5 14 — 14 mA — AC ELECTRICAL CHARACTERISTICS VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V 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 D to Output Q 1.7 3.6 1.7 3.6 1.7 3.6 1.7 3.6 ns CL = 20pF fMAX Maximum Frequency 150 — 150 — 150 — 150 — MHz CL = 20pF tr tf Output Rise/Fall Time (1.0V to 2.0V) — 1.5 — 1.5 — 1.5 — 1.5 ns CL = 20pF TTL DC ELECTRICAL CHARACTERISTICS VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V 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 2.4 — 2.4 — 2.4 — 2.4 — V IOH = –3.0mA VOL Output LOW Voltage — 0.5 — 0.5 — 0.5 — 0.5 V IOL = 24mA IOS Output Short Circuit Current –60 –200 –60 –200 –60 –200 –60 –200 mA VOUT = 0V M9999-031506 [email protected] or (408) 955-1690 3 Micrel, Inc. SY100ELT25 ECL DC ELECTRICAL CHARACTERISTICS VCC = 4.5V to 5.5V; VEE = –4.2V to –5.5V TA = –40°C Symbol Parameter Min. TA = 0°C Typ. Max. — — 0.5 — VEE+2.2 — Min. 150 — — 0.5 TA = +25°C Typ. Max. — Min. 150 — — 0.5 TA = +85°C Typ. Max. IIH Input HIGH Current IIL Input HIGH Current VCMR Common Mode Range VPP Minimum Peak-to-Peak Input(1) 200 — — 200 — — 200 — — VIH Input HIGH Voltage –1165 — –880 –1165 — –880 –1165 — –880 VIL Input LOW Voltage –1810 — –1475 –1810 — –1475 –1810 VBB Reference Output –1.38 — –1.26 — –1.26 — GND VEE+2.2 –1.38 — — — — 0.5 µA V 200 — — mV –1165 — –880 mV — –1475 –1810 — –1475 mV — –1.26 — –1.26 mV VCC Use 0.1µF Capacitors For Decoupling 50Ω COAX IN 50Ω COAX DEVICE UNDER TEST OUT Use Oscilloscope Internal 50Ω Load For Termination M9999-031506 [email protected] or (408) 955-1690 450Ω 50Ω COAX CH A CH B OSCILLOSCOPE 4 µA — TTL SWITCHING CIRCUIT PULSE GENERATOR 150 GND GND VEE+2.2 NOTE: 1. 200mV input guarantees full logic at output. VEE — Unit — — –1.38 150 Typ. Max. — — GND VEE+2.2 Min. –1.38 Micrel, Inc. SY100ELT25 ECL/TTL PROPAGATION DELAY — SINGLE ENDED 50% VIN tPLH tPHL 1.5V VOUT ECL/TTL WAVEFORMS: RISE AND FALL TIMES 2.0V 1V VOUT tf tr M9999-031506 [email protected] or (408) 955-1690 5 Micrel, Inc. SY100ELT25 8-PIN SOIC .150" WIDE (Z8-1) Rev. 03 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA 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 6