Micrel, Inc. ECL Pro™ SY10EPT28L ECL Pro™ SY100EPT28L 3V LVTTL-TO-DIFFERENTIAL LVPECL AND DIFFERENTIAL LVPECL-TO-LVTTL TRANSLATOR SY10EPT28L SY100EPT28L FEATURES ■ 3.3V ±10% power supply ■ Guaranteed AC parameters over temperature: fMAX > 275MHz (LVTTL) ■ < 2ns LVPECL-to-LVTTL propagation delay ■ < 600ps LVTTL-to-LVPECL propagation delay ■ Internal 75kΩ input pull-down resistors ■ Industrial temperature range: –40°C to +85°C ■ Available in 8-pin MSOP and SOIC packages ECL Pro™ DESCRIPTION The SY10/100EPT28L is a differential LVPECL-toLVTTL translator and a LVTTL-to-differential LVPECL translator in a single package. Because LVPECL (Positive ECL) levels are used, only +3.3V and ground are required. The small outline 8-pin package and the dual translation design of the EPT28L makes it ideal for applications which are sending and receiving signals across a backplane. The 100k series includes temperature compensation. Thus, logic levels are constant over temperature. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. PIN NAMES Pin Function D_LVTTL Low Voltage TTL Input Q_LVTTL Low Voltage TTL Output D_LVPECL /D_LVPECL Low Voltage Differential PECL Inputs with 75kΩ internal pull-down Q_LVPECL /Q_LVPECL Low Voltage Differential PECL Outputs VCC 3.3V Positive Supply GND Ground ECL Pro is a trademark of Micrel, Inc. M9999-111605 [email protected] or (408) 955-1690 Rev.: C 1 Amendment: /0 Issue Date: November 2005 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) D_LVPECL 1 /D_LVPECL 2 8 VCC Part Number Package Type Operating Range Package Marking Lead Finish 7 Q_LVTTL SY10EPT28LZI Z8-1 Industrial HEP28 Sn-Pb Q_LVPECL 3 6 D_LVTTL SY10EPT28LZITR(2) Z8-1 Industrial HEP28 Sn-Pb /Q-LVPECL 4 5 GND SY100EPT28LZI Z8-1 Industrial XEP28 Sn-Pb SY100EPT28LZITR(2) Z8-1 Industrial XEP28 Sn-Pb SY10EPT28LKI K8-1 Industrial HP28 Sn-Pb SY10EPT28LKITR(2) K8-1 Industrial HP28 Sn-Pb SY100EPT28LKI K8-1 Industrial XP28 Sn-Pb SY100EPT28LKITR(2) K8-1 Industrial XP28 Sn-Pb SY10EPT28LZG(3) Z8-1 Industrial HEP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY10EPT28LZGTR(2, 3) Z8-1 Industrial HEP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY100EPT28LZG(3) Z8-1 Industrial XEP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY100EPT28LZGTR(2, 3) Z8-1 Industrial XEP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY10EPT28LKG(3) K8-1 Industrial HP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY10EPT28LKGTR(2, 3) K8-1 Industrial HP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY100EPT28LKG(3) K8-1 Industrial XP28 with NiPdAu Pb-Free bar-line indicator Pb-Free SY100EPT28LKGTR(2, 3) K8-1 Industrial XP28 with NiPdAu Pb-Free bar-line indicator Pb-Free LVPECL LVTTL TOP VIEW (Available in MSOP or SOIC package) 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. M9999-111605 [email protected] or (408) 955-1690 2 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating VCC Power Supply Voltage VIN Input Voltage IOUT LVPECL Output Current TA Operating Temperature Range TLEAD Lead Temperature (Soldering, 20sec.) Tstore Storage Temperature Range θJA Package Thermal Resistance (Junction-to-Ambient) Value Unit –0.5 to +3.8 V 0 to VCC V 50 100 mV –40 to +85 °C +260 °C –65 to +150 °C –Still-Air (SOIC) –500lfpm (SOIC) 160 109 °C/W –Still-Air (MSOP) –500lfpm (MSOP) 206 155 °C/W (SOIC) (MSOP) 39 39 °C/W –Continuous –Surge Package Thermal Resistance (Junction-to-Case) θJC DC ELECTRICAL CHARACTERISTICS(2) TA = –40°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VCC Power Supply Voltage 3.0 3.3 3.6 3.0 3.3 3.6 3.0 3.3 3.6 V ICC Power Supply Current — 20 40 — 22 40 — 25 40 mA Condition LVPECL DC ELECTRICAL CHARACTERISTICS(2) VCC = 3.3V ±10% TA = –40°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit VOH Output HIGH Voltage 10EPT 100EPT 2165 2155 2290 2280 2415 2405 2230 2155 2355 2280 2480 2405 2290 2155 2415 2280 2540 2405 mV VOL Output LOW Voltage 10EPT 100EPT 1365 1355 1490 1480 1615 1605 1430 1355 1555 1480 1680 1605 1490 1355 1615 1480 1740 1605 mV VIH Input HIGH Voltage 10EPT 100EPT 2090 2075 — — 2415 2420 2155 2075 — — 2480 2420 2215 2075 — — 2540 2420 mV VIL Input LOW Voltage 10EPT 100EPT 1365 1355 — — 1690 1675 1430 1355 — — 1755 1675 1490 1355 — — 1815 1675 mV IIH Input HIGH Current — — 150 — — 150 — — 150 µA IIL Input LOW Current /D, D 0.5 — 0.5 — — 0.5 — — 0.5 µA CIN Input Capacitance (SOIC) (MSOP) — — — — — — — — 0.75 1.1 — — — — — — — — pF pF Condition Note 3 Note 3 Note 3 Note 3 VIN = 3.46V Notes: 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. 2. 10/100KEPT circuits are designed to meet the DC specifications shown in the above tables after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. 3. Input and output parameters vary 1:1 with VCC. M9999-111605 [email protected] or (408) 955-1690 3 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. LVTTL DC ELECTRICAL CHARACTERISTICS(4) VCC = 3.3V ±10% TA = –40°C Symbol Parameter TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition VOH Output HIGH Voltage 2.0 — — 2.0 — — 2.0 — — V IOH = –3mA VOL Output LOW Voltage — — 0.5 — — 0.5 — — 0.5 V IOH = –24mA VIH Input HIGH Voltage 2.0 — — 2.0 — — 2.0 — — V VIL Input LOW Voltage — — 0.8 — — 0.8 — — 0.8 V VIK Input Clamp Voltage — — –1.2 — — –1.2 — — –1.2 V IIK = –18mA IIH Input HIGH Current — — 20 — — 20 — — 20 µA VIN = 2.7V — — 100 — — 100 — — 100 µA VIN = VCC — — –0.2 — — –0.2 — — –0.2 µA VIN = 0.5V –275 — –80 –275 — –80 –275 — –80 mA VOUT = 0V — — — — 0.75 1.1 — — — — — — pF pF IIL Input LOW Current IOUT(SC) LVTTL Output Short-Circuit Current CIN Input Capacitance (SOIC) (MSOP) — — AC ELECTRICAL CHARACTERISTICS(4) VCC = +3.3V ±10% TA = –40°C Symbol TA = +25°C TA = +85°C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition fMAX Maximum Frequency LVPECL LVTTL 700 275 — 350 — — 700 275 — 350 — — 700 275 — 350 — — MHz MHz Output Toggle Frequency tPLH tPHL Propagation Delay D_LVPECL ➝ Q_LVTTL 1.5 — 2.5 1.5 — 2.5 1.5 — 2.5 ns CL = 20pF 50Ω to VCC–2.0 Q_LVTTL ➝ D_LVPECL 100 400 600 100 400 600 100 400 600 ps VCMR LVPECL Common Mode Range 1.2 — VCC 1.2 — VCC 1.2 — VCC V VPP LVPECL Input Voltage Swing (Single-Ended) 100 — — 100 — — 100 — — mV Note 5 LVPECL Output Rise/Fall Times (20% to 80%) 200 — 500 200 — 500 200 — 500 ns 50Ω to VCC–2.0 LVTTL Output Rise/Fall Times (10% to 90%) 0.5 — 1.0 0.5 — 1.0 0.5 — 1.0 ns CL = 20pF tDC Duty Cycle 45 50 55 45 50 55 45 50 55 % tJITTER Cycle-to-Cycle Jitter (rms) — 0.2 <1 — 0.2 <1 — 0.2 <1 ps t r, t f RMS 4. 10/100KEPT circuits are designed to meet the DC specifications shown in the above tables after thermal equilibrium has been established. The circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. 5. VPP (min) is the minimum input swing for which AC parameters are guaranteed. M9999-111605 [email protected] or (408) 955-1690 4 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. TERMINATION RECOMMENDATIONS +3.3V +3.3V ZO = 50Ω R1 130Ω R1 130Ω R2 82Ω R2 82Ω +3.3V ZO = 50Ω Vt = VCC —2V Figure 1. LVPECL Parallel Termination–Thevenin Equivalent +3.3V +3.3V Z = 50Ω Z = 50Ω 50Ω 50Ω source destination Rb Figure 2. LVPECL Three-Resistor “Y–Termination” Notes: 1. Power-saving alternative to 4-resistor, Thevenin termination. 2. Place termination resistors as close to destination inputs as possible. 3. Rb resistor sets the DC bias voltage, equal to Vt. For 3.3V supply, Rb value is between 46Ω to 50Ω. M9999-111605 [email protected] or (408) 955-1690 5 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. 8-PIN MSOP (K8-1) Rev. 01 M9999-111605 [email protected] or (408) 955-1690 6 ECL Pro™ SY10EPT28L SY100EPT28L Micrel, Inc. 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. © 2005 Micrel, Incorporated. M9999-111605 [email protected] or (408) 955-1690 7