D FLIP-FLOP WITH SET AND RESET FEATURES ■ ■ ■ ■ SY10EL31 SY100EL31 DESCRIPTION 475ps propagation delay 2.8GHz toggle frequency Internal 75KΩ input pull-down resistors Available in 8-pin SOIC package The SY10/100EL31 are D flip-flops with set and reset. The devices are functionally equivalent to the E131 devices, with higher performance capabilities. With propagation delays and output transition times significantly faster than the E131, the EL31 is ideally suited for those applications which require the ultimate in AC performance. Both the set and reset inputs are asynchronous, level triggered signals. Data enters the master portion of the flip-flop when the clock is LOW and is transferred to the slave, and thus the outputs, upon a positive transition of the clock. PIN NAMES PIN CONFIGURATION/BLOCK DIAGRAM Pin S 1 D 2 8 VCC 7 Q 6 Q 5 VEE S D Flip-Flop CLK 3 R 4 Function D Data Inputs Q Data Outputs S Set R Reset CLK Clock Input R TRUTH TABLE(1) SOIC TOP VIEW D S R CLK Q L L L Z L H L L Z H X H L X H X L H X L X H H X Undef NOTE: 1. Z = LOW-to-HIGH transition. Rev.: E 1 Amendment: /0 Issue Date: August, 1998 SY10EL31 SY100EL31 Micrel DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = GND TA = –40°C Symbol IEE VEE TA = +25°C TA = +85°C Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Power Supply Current 10EL 100EL — — 27 27 32 32 18 18 27 27 32 32 18 18 27 27 32 32 18 21 27 31 32 37 Power Supply Voltage 10EL 100EL –4.75 –4.20 –5.2 –4.5 –5.5 –5.5 –4.75 –4.20 –5.2 –4.5 –5.5 –5.5 –4.75 –4.20 –5.2 –4.5 –5.5 –5.5 –4.75 –4.20 –5.2 –4.5 –5.5 –5.5 — — 150 — — 150 — — 150 — — 150 µA Input HIGH Current IIH TA = 0°C Unit mA V AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = GND TA = –40°C Symbol Parameter TA = 0°C Min. Typ. Max. Min. 20 2.5 — 2.2 2.8 TA = +25°C Typ. Max. TA = +85°C Min. Typ. Max. Min. Typ. Max. Unit — 2.2 2.8 — 2.2 2.8 — GHz fMAX Maximum Toggle Frequency tPLH tPHL Propagation Delay to Output CLK S, R 315 295 465 455 630 630 365 345 465 455 580 580 375 355 475 465 590 590 430 400 530 510 645 645 tS Set-up Time 150 0 — 150 0 — 150 0 — 150 0 — ps tH Hold Time 250 100 — 250 100 — 250 100 — 250 100 — ps tRR Set/Reset Recovery 400 200 — 400 200 — 400 200 — 400 200 — ps tPW Minimum Pulse Width CLK, Set, Reset 400 — — 400 — — 400 — — 400 — — ps tr tf Output Rise/Fall Times Q (20% to 80%) 100 225 350 100 225 350 100 225 350 100 225 350 ps ps PRODUCT ORDERING CODE Ordering Code Package Type Operating Range SY10EL31ZC Z8-1 Commercial SY10EL31ZCTR Z8-1 Commercial SY100EL31ZC Z8-1 Commercial SY100EL31ZCTR Z8-1 Commercial 2 SY10EL31 SY100EL31 Micrel 8 LEAD SOIC .150" WIDE (Z8-1) Rev. 03 3 SY10EL31 SY100EL31 Micrel 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 4