Micrel, Inc. SY10E111 SY100E111 SY10E111 1:9 DIFFERENTIAL CLOCK DRIVER WITH ENABLE FEATURES SY100E111 DESCRIPTION ■ ■ ■ ■ ■ ■ ■ Low skew Extended 100E VEE range of –4.2V to –5.5V Guaranteed skew limits Differential design VBB output Enable input Fully compatible with industry standard 10KH, 100K I/O levels ■ 75KΩ input pulldown resistors ■ Fully compatible with ON Semiconductor MC10E/100E111 ■ Available in 28-pin PLCC package The SY10/100E111 are low skew 1-to-9 differential drivers designed for clock distribution in new, highperformance ECL systems. They accept one differential or single-ended input, with V BB used for single-ended operation. The signal is fanned out to nine identical differential outputs. An enable input is also provided such that a logic HIGH disables the device by forcing all Q outputs LOW and all /Q outputs HIGH. The device is specifically designed and produced for low skew. The interconnect scheme and metal layout are carefully optimized for minimal gate-to-gate skew within the device. Wafer characterization and process control ensure consistent distribution of propagation delay from lot to lot. Since the E111 shares a common set of “basic” processing with the other members of the ECLinPS™ family, wafer characterization at the point of device personalization allows for tighter control of parameters, including propagation delay. To ensure that the skew specification is met, it is necessary that both sides of the differential output are terminated into 50Ω, even if only one side is being used. ln most applications, all nine differential pairs will be used and, therefore, terminated. In the case where fewer than nine pairs are used, it is necessary to terminate at least the output pairs on the same package side (i.e. sharing the same VCCO as the pair(s) being used on that side) in order to maintain minimum skew. The VBB output is intended for use as a reference voltage for single-ended reception of ECL signals to that device only. When using V BB for this purpose, it is recommended that VBB is decoupled to VCC via a 0.01µF capacitor. BLOCK DIAGRAM Q0 Q0 Q1 Q1 Q2 Q2 Q3 Q3 IN Q4 IN Q4 Q5 EN PIN NAMES Q5 Q6 Pin Q6 VBB M9999-032006 [email protected] or (408) 955-1690 Function IN, /IN Differential Input Pair Q7 /EN Enable Input Q7 Q0, /Q0 — Q8, /Q8 Differential Outputs Q8 VBB VBB Output Q8 VCCO VCC to Output Rev.: E 1 Amendment: /0 Issue Date: March 2006 SY10E111 SY100E111 Micrel, Inc. Q2 /Q2 Ordering Information(1) /Q1 /Q0 Q1 VCCO Q0 PACKAGE/ORDERING INFORMATION 25 24 23 22 21 20 19 VEE /EN IN VCC 26 18 Q3 27 17 28 16 /Q3 Q4 VCCO /Q4 PLCC TOP VIEW J28-1 1 15 /IN VBB 2 3 13 NC 4 12 9 Q7 8 Q5 /Q5 10 11 /Q6 Q6 7 VCCO 6 /Q8 Q8 /Q7 5 14 Part Number Package Type Operating Range Package Marking Lead Finish SY10E111JI J28-1 Industrial SY10E111JI Sn-Pb SY10E111JITR(2) J28-1 Industrial SY10E111JI Sn-Pb SY100E111JI J28-1 Industrial SY100E111JI Sn-Pb SY100E111JITR(2) J28-1 Industrial SY100E111JI Sn-Pb SY10E111JC J28-1 Commercial SY10E111JC Sn-Pb SY10E111JCTR(2) J28-1 Commercial SY10E111JC Sn-Pb SY100E111JC J28-1 Commercial SY100E111JC Sn-Pb SY100E111JCTR(2) J28-1 Commercial SY100E111JC Sn-Pb SY10E111JY(3) J28-1 Industrial SY10E111JY with Pb-Free bar-line indicator Matte-Sn SY10E111JYTR(2, 3) J28-1 Industrial SY10E111JY with Pb-Free bar-line indicator Matte-Sn SY100E111JY(3) J28-1 Industrial SY100E111JY with Pb-Free bar-line indicator Matte-Sn SY100E111JYTR(2, 3) J28-1 Industrial SY100E111JY with Pb-Free bar-line indicator Matte-Sn 28-Pin PLCC (J28-1) 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. TIMING DIAGRAMS IN IN /IN IN /IN /IN ts tr tH /EN 50% /EN 50% /EN 75 mV 50% 75 mV /Q /Q /Q Q Q Q 75 mV Figure 1. Set-up Time M9999-032006 [email protected] or (408) 955-1690 75 mV Figure 2. Hold Time 2 Figure 3. Release Time SY10E111 SY100E111 Micrel, Inc. DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = –40°C Symbol VBB Parameter Min. Typ. TA = 0°C Max. Output Reference Voltage 10E 100E IIH Input HIGH Current IEE Power Supply Current TA = +25°C Max. Min. Typ. TA = +85°C Min. Typ. Max. –1.38 –1.38 — — — — 150 — — 150 — — 48 48 60 60 — — 48 48 60 60 Min. Typ. Max. — — –1.19 –1.26 — — 150 — — 48 55 60 69 Unit V –1.27 –1.35 –1.26 –1.38 — — –1.25 –1.31 –1.26 –1.38 µA mA 10E 100E AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = –40°C Symbol Parameter Min. Typ. Max. TA = 0°C Min. Typ. TA = +25°C Max. Min. Typ. TA = +85°C Max. Min. Typ. Max. Unit Propagation Delay to Output IN (differential)(1) IN (single-ended)(2) Enable(3) Disable(3) 430 330 450 450 — — — — 630 730 850 850 430 330 450 450 — — — — 630 730 850 850 430 330 450 450 — — — — 630 730 850 850 tSKEW Within-Device Skew(4) — 25 50 — 25 50 — 25 50 ps tS Set-up Time /EN to IN(5) 200 0 — 200 0 — 200 0 — ps Hold Time IN to /EN(6) 0 –200 — 0 –200 — 0 –200 — ps tPD tH tR Release Time /EN to IN(7) ps 300 100 — 300 100 — 300 100 — ps Minimum Input Swing(8) 250 — — 250 — — 250 — — mV VCMR Common Mode Range(9) –1.6 — –0.4 –1.6 — –0.4 –1.6 — –0.4 V tr tf Rise/Fall Times (20% to 80%) 275 375 600 275 375 600 275 375 600 ps VPP Notes: 1. The differential propagation delay is defined as the delay from the crossing points of the differential input signals to the crossing point of the differential output signals. 2. The single-ended propagation delay is defined as the delay from the 50% point of the input signal to the 50% point of the output signal. 3. Enable is defined as the propagation delay from the 50% point of a negative transition on /EN to the 50% point of a positive transition on Q (or a negative transition on /Q). Disable is defined as the propagation delay from the 50% point of a positive transition on /EN to the 50% point of a negative transition on Q (or a positive transition on /Q). 4. The within-device skew is defined as the worst case difference between any two similar delay paths within a single device. 5. The set-up time is the minimum time that /EN must be asserted prior to the next transition of /IN/IN to prevent an output response greater than ±75mV to that /IN/IN transition (see Figure 1). 6. The hold time is the minimum time that /EN must remain asserted after a negative going IN or a positive going /IN to prevent an output response greater than ±75mV to that IN, /IN transition (see Figure 2). 7. The release time is the minimum time that /EN must be de-asserted prior to the next IN, /IN transition to ensure an output response that meets the specified IN to Q propagation delay and output transition times (see Figure 3). 8. VPP (min.) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. The VPP (min.) is AC limited for the E111, as a differential input as low as 50mV will still produce full ECL levels at the output. 9. VCMR is defined as the range within which the VIH level may vary, with the device still meeting the propagation delay specification. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and greater than or equal to VPP (min.). M9999-032006 [email protected] or (408) 955-1690 3 SY10E111 SY100E111 Micrel, Inc. 28-PIN PLCC (J28-1) 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 data sheet 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. M9999-032006 [email protected] or (408) 955-1690 4