Micrel, Inc. PECL-TO-CML TRANSLATOR WITH OUTPUT ENABLE DESCRIPTION FEATURES ■ ■ ■ ■ ■ ■ ■ ■ SY100ELT982 SY100ELT982 Up to 1.25Gbps operation 25mA peak drive current Adjustable output current Separate output enable Differential inputs for data 75KΩ input pull-down resistor Single power supply Available in a tiny 10-pin MSOP The SY100ELT982 is a high speed PECL-to-CML translator. The output current is DC current controlled by IRSET, current through the resistor RSET. The output OUT is LOW when output enable is HIGH. The device incorporates complementary open collector outputs with a capability of driving peak current of 25mA. The SY100ELT982 utilizes the high performance bipolar ASSET™ technology. APPLICATIONS ■ Telecommunications ■ CML output oscillator ■ GaAS interface BLOCK DIAGRAM VCC RTERM OUT DIN OUT Internal Logic DIN I OUT EN BIAS Control 40X VCC Output Current Control GND VEE RSET VREF RSET ASSET technology is a trademark of Micrel, Inc. M9999-031506 [email protected] or (408) 955-1690 Rev.: D 1 Amendment: /0 Issue Date: March 2006 Micrel, Inc. SY100ELT982 PACKAGE/ORDERING INFORMATION Ordering Information(1) Package Type Operating Range Package Marking Lead Finish SY100ELT982KC K10-1 Commercial XEL982 Sn-Pb SY100ELT982KCTR(2) K10-1 Commercial XEL982 Sn-Pb Industrial XEL982 Sn-Pb /EN 1 10 VCC Part Number DIN 2 9 /OUT /DIN 3 VREF RSET MSOP K10-1 8 OUT SY100ELT982KI K10-1 4 7 GND SY100ELT982KITR(2) K10-1 Industrial XEL982 Sn-Pb 5 6 GND SY100ELT982KG(3) K10-1 Industrial XEL982 with Pb-Free bar-line indicator Pb-Free NiPdAu SY100ELT982KGTR(2, 3) K10-1 Industrial XEL982 with with Pb-Free bar-line indicator Pb-Free NiPdAu 10-Pin MSOP (K10-1) 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 Micrel, Inc. SY100ELT982 TRUTH TABLE(1) PIN NAMES Pin Function D /D /EN OUT (2) /OUT(3) VCC Most positive power supply input, +5V for PECL operation. L H L L H H L L H L GND Ground X X H L H DIN, /DIN Differential PECL 100K compatible inputs. /EN This PECL 100K compatible input enables data translation. When Enable asserted HIGH, OUT = IOUT, /OUT = 0mA. OUT, /OUT Open collector outputs from the output buffer drive these differential current outputs. VREF Voltage reference for use with RSET. RSET External resistor to adjust output current. NOTE: 1. L = LOW, H = HIGH, X = don't care 2. H = IOUT = 0mA 3. H = /IOUT = 0mA ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Value Unit VCC Power Supply Voltage 0 to +7.0 V VI Input Voltage 0 to +6.0 V IO Output Current 25 mA TLEAD Lead Temperature (soldering, 20sec.) TA Operating Temperature Range Tstore Storage Temperature Range Ptot Power Dissipation +260 °C 0˚C to +85˚C ˚C –55˚C to +125˚C ˚C 250 mW 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. OPERATIONING CONDITIONS(1) Symbol Rating VCC Power Supply Voltage RTERM Resistor to Terminate Outputs RSET Resistor to Adjust Current θJA Thermal Resistance of Package to Ambient(2) COUT Capacitance on OUT + /OUT Notes: 1. The voltage drop across RTERM should not be greater than 2V. 2. Still air without heatsink. M9999-031506 [email protected] or (408) 955-1690 3 Value Unit +4.5 to +5.5 V 10 to 50 Ω 1500 to 50,000 Ω 206 ˚C/W 2.5 typical pf Micrel, Inc. SY100ELT982 DC ELECTRICAL CHARACTERISTICS GND = 0V; VCC = +5.0V ±10%; TA = 0°C to + 85°C TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VIH Input HIGH Voltage (Din, /Din, /EN) VCC -1165 — VCC -880 VCC -1165 — VCC -880 VCC -1165 — VCC -880 mV VIL Input LOW Voltage (Din, /Din, /EN) VCC -1810 — VCC -1475 VCC -1810 — VCC -1475 VCC -1810 — VCC -1475 mV VREF Reference Voltage — 3.12 — — 3.00 — — 2.80 — V IIL Input LOW Current(1) (Din, /Din, /EN) 0.5 — — 0.5 — — 0.5 — — uA IIH Input HIGH Current (Din, /Din, /EN) — — 100 — — 100 — — 100 uA ICC Supply Current(2) — 16 25 — 16 25 — 16 25 mA IOL Output LOW Current (/EN = HIGH) — — 500 — — 500 — — 500 uA IOR Output Current Ringing(2) — — 10 — — 10 — — 10 % IGAIN IOUT/IRSET 30 38 44 30 38 44 30 38 44 — Notes: 1. VI = VIL(Min.) 2. IOH = 25mA. AC ELECTRICAL CHARACTERISTICS(1) IOH =10mA; GND = 0V; VCC = +5V ±10%; TA = 0°C to + 85°C TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit tpd D Propagation Delay Din - OUT — 480 1000 — 480 1000 — 480 1000 ps tpd EN Propagation Delay /EN - OUT — 450 1000 — 450 1000 — 450 1000 ps tr tf Rise/Fall Time (20% to 80%) — 200 — — 200 — — 200 — ps IOUT Output Current 5 15 25 5 15 25 5 15 25 mA IRSET Output Current Control 0.125 — — 0.625 mA IOR Output Current Ringing(2) — — — 10 % 0.625 0.125 10 — — — Notes: 1. RTERM = 50Ω ±1% 2. IOH = 5 to 25mA M9999-031506 [email protected] or (408) 955-1690 4 0.625 0.125 10 — Conditions Micrel, Inc. SY100ELT982 APPLICATION EXAMPLE VCC 50 50 DIN SY100ELT982 DIN EN VRET Logic LOW to enable RSET 50 coaxil 50 coaxil 50 CML INPUT DEVICE Ex. EL16V 1.5K Typical PERFORMANCE CURVES IO and RSET 30 25 IO (mA) 20 15 10 5 0.0 0.0 2.0K 4.0K 6.0K RSET (ohm) M9999-031506 [email protected] or (408) 955-1690 5 8.0K 10K 12K Micrel, Inc. SY100ELT982 10-PIN MSOP (K10-1) Rev. 00 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