ClockWorks™ PRELIMINARY SY10H841L SY100H841L 3.3V SINGLE SUPPLY QUAD PECL-TO-TTL W/LATCHED OUTPUT ENABLE DESCRIPTION FEATURES ■ ■ ■ ■ ■ 3.3V power supply Translates positive ECL to TTL (PECL-to-TTL) 300ps pin-to-pin skew 500ps part-to-part skew Differential internal design for increased noise immunity and stable threshold inputs ■ VBB reference output The SY10/100H841L are single supply, low skew translating 1:4 clock drivers. The devices feature a 24mA TTL output stage, with AC performance specified into a 20pF load capacitance. A latch is provided on-chip. When LEN is LOW (or left open, in which case it is pulled low by the internal pulldowns) the latch is transparent. A HIGH on the enable pin (EN) forces all outputs LOW. As frequencies increase to 40MHz and above, precise timing and shaping of clock signals becomes extremely important. The H841 solves several clock distribution problems such as minimizing skew (300ps), maximizing clock fanout (24mA drive), and precise duty cycle control through a proprietary differential internal design. The 10K version is compatible with 10KH ECL logic levels. The 100K version is compatible with 100K levels. ■ ■ ■ ■ Single supply Enable input Latch enable input Extra TTL and ECL power/ground pins to reduce cross-talk/noise ■ High drive capability: 24mA each output ■ Fully compatible with industry standard 10K, 100K I/O levels ■ Available in 16-pin SOIC package PIN CONFIGURATION BLOCK DIAGRAM Q0 Q1 LEN 1 16 Q3 EN 2 15 GT GE 3 14 Q2 VE 4 13 VT D 5 12 VT D 6 11 Q1 VBB 7 10 GT GT 8 9 Q0 SOIC Z16-1 Q2 VBB PIN NAMES D D D Q Q3 Pin LEN EN Function GT TTL Ground (0V) VT TTL VCC (+3.3V) VE ECL VCC (+3.3V) GE ECL Ground (0V) D, D Signal Input (PECL) VBB VBB Reference Output (PECL) Q0 - Q3 Signal Outputs (TTL) EN Enable Input (PECL) LEN Latch Enable Input Rev.: C 1 Amendment: /0 Issue Date: May, 1999 ClockWorks™ PRELIMINARY SY10H841L SY100H841L Micrel TRUTH TABLE PIN DESCRIPTION D LEN EN Q Pin Symbol L L L L 1 LEN Latch Enable Input H L L H 2 EN Enable Input (PECL) X X H L 3 GE ECL Ground (0V) X H L Latch 4 VE ECL VCC (+3.3V) 5 D ECL Signal Input (Non-inverting) ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Value Unit Description 6 D 7 VBB VBB Reference Output (PECL) ECL Signal Input (Inverting) 8 GT TTL Ground (0V) 9 Q0 Signal Output (TTL) 10 GT TTL Ground (0V) 11 Q1 Signal Output (TTL) 12 VT TTL VCC (+3.3V) VE (ECL) VT (TTL) Power Supply Voltage –0.5 to +7.0 –0.5 to +7.0 V VI (ECL) VOUT (TTL) Input Voltage 0.0 to VEE 0.0 to VT V Tstore Storage Temperature –65 to +150 ˚C 13 VT TTL VCC (+3.3V) TA Operating Temperature 0 to +85 ˚C 14 Q2 Signal Output (TTL) 15 GT TTL Ground (0V) 16 Q3 Signal Output (TTL) 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 CHARACTERISTICS VT = VE = +3.0V to +3.6V TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Unit Condition IEE Power Supply Current ECL — 40 — 40 — 40 mA VE Pin ICCH Power Supply Current TTL — 20 — 20 — 20 mA Total all VT pins — 25 — 25 — 25 ICCL TTL DC ELECTRICAL CHARACTERISTICS VT = VE = +3.0V to +3.6V TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Unit Condition VOH Output HIGH Voltage 2.0 — 2.0 — 2.0 — V IOH = –3.0mA VOL Output LOW Voltage — 0.5 — 0.5 — 0.5 V IOL = 24mA IOS Output Short Circuit Current –80 — –80 — –80 — mA VOUT = 0V 2 ClockWorks™ PRELIMINARY SY10H841L SY100H841L Micrel 10H ECL DC ELECTRICAL CHARACTERISTICS(1) VT = VE = +3.0V to +3.6V TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Unit Condition IIH Input HIGH Current — 225 — 175 — 175 µA — IIL Input LOW Current 0.5 — 0.5 — 0.5 — µA — VIH Input HIGH Voltage 2.130 2.460 2.170 2.490 2.240 2.580 V VE = 3.3V VIL Input LOW Voltage 1.350 1.820 1.350 1.820 1.350 1.855 V VE = 3.3V VBB Output Reference Voltage 1.920 2.030 1.950 2.050 1.990 2.110 V VE = 3.3V NOTE: 1. ECL VIH, VIL and VBB are referenced to VCCE and will vary 1:1 with the power supply. The levels shown are for IVT = IVO = VCCE = +3.3V. 100H ECL DC ELECTRICALCHARACTERISTICS(1) VT = VE = +3.0V to +3.6V TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Unit Condition — 225 — 175 — 175 µA — IIH Input HIGH Current IIL Input LOW Current 0.5 — 0.5 — 0.5 — µA — VIH Input HIGH Voltage 2.135 2.420 2.135 2.420 2.135 2.420 V VE = 3.3V VIL Input LOW Voltage 1.490 1.825 1.490 1.825 1.490 1.825 V VE = 3.3V VBB Output Reference Voltage 1.920 2.040 1.920 2.040 1.920 2.040 V VE = 3.3V NOTE: 1. ECL VIH, VIL and VBB are referenced to VCCE and will vary 1:1 with the power supply. The levels shown are for IVT = IVO = VCCE = +3.3V. AC CHARACTERISTICS VT = VE = +3.0V to +3.6V TA = 0°C Symbol Parameter TA = +25°C TA = +85°C Min. Max. Min. Max. Min. Max. Unit Condition tPLH tPHL Propagation Delay D to Output Q0–Q3 2.2 3.2 2.1 3.1 2.0 3.0 ns CL = 20pF tskpp Part-to-Part Skew(1,4) Q0–Q3 — 0.5 — 0.5 — 0.5 ns CL = 20pF tskew++ Within-Device Skew(2,4) Q0–Q3 — 0.3 — 0.3 — 0.3 ns CL = 20pF tskew– – Within-Device Skew(3,4) Q0–Q3 — 0.3 — 0.3 — 0.3 ns CL = 20pF tPLH tPHL Propagation Delay LEN to Q Q0–Q3 2.2 3.2 2.1 3.1 2.0 3.0 ns CL = 20pF tPLH tPHL Propagation Delay EN to Output Q0–Q3 2.2 3.2 2.1 3.1 2.0 3.0 ns CL = 20pF tr tf Output Rise/Fall Time 1.0V to 2.0V Q0–Q3 — 1.5 — 1.5 — 1.5 ns CL = 20pF fMAX Max. Input Frequency(5,6) Q0–Q3 160 — 160 — 160 — MHz CL = 20pF — Pulse Width Q0–Q3 1.5 — 1.5 — 1.5 — ns — — Recovery Time EN Q0–Q3 1.0 — 1.0 — 1.0 — ns — tS Set-up Time D, EN Q0–Q3 0.75 — 0.75 — 0.75 — ns — tH Hold Time D, EN Q0–Q3 0.75 — 0.75 — 0.75 — ns — 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. 3 ClockWorks™ PRELIMINARY SY10H841L SY100H841L Micrel TTL SWITCHING CIRCUIT VCC & VCCO VEE USE 0.1µF CAPACITORS FOR DECOUPLING. TTL PECL 50Ω COAX DEVICE UNDER TEST IN PULSE GENERATOR 50Ω COAX USE OSCILLOSCOPE INTERNAL 50Ω LOAD FOR TERMINATION. OUT 450Ω 50Ω COAX CH A CH B OSCILLOSCOPE ECL/TTL PROPAGATION DELAY — SINGLE ENDED 50% VIN Tpd– – Tpd++ 1.5V VOUT ECL/TTL WAVEFORMS: RISE AND FALL TIMES 2.0V 0.8V VOUT Trise Tfall LOGIC DIAGRAM PRODUCT ORDERING CODE Ordering Code Package Type Operating Range SY10H841LZC Z16-1 Commercial SY10H841LZCTR Z16-1 Commercial SY100H841LZC Z16-1 Commercial SY100H841LZCTR Z16-1 Commercial 4 ClockWorks™ PRELIMINARY SY10H841L SY100H841L Micrel 16 LEAD SOIC .300" WIDE (Z16-1) 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 5