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| 3-BIT DIFFERENTIAL FLIP-FLOP SY10E431 SY100E431 FEATURES s Differential D, clock and Q s Extended 100E VEE range of -4.2V to -5.5V s VBB output for single-ended use s 1100MHz min. toggle frequency s Edge-triggered asynchronous set and reset s Fully compatible with Motorola MC10E/100E431 s Available in 28-pin PLCC package DESCRIPTION The SY10/100E431 are 3-bit flip-flops with differential clock, data input and data output. The asynchronous Set and Reset controls are edgetriggered rather than level controlled. This allows the user to rapidly set or reset the flip-flop and then continue clocking at the next clock edge without the necessity of de-asserting the set/reset signal (as would be the case with a level controlled set/reset). The E431 is also designed with larger internal swings, an approach intended to minimize the time spent crossing the threshold region and thus reduces the metastability susceptibility window. BLOCK DIAGRAM S0 D0 D0 CLK0 CLK0 R0 S1 D1 D1 CLK1 CLK1 R1 S2 D S Q Q R Q1 Q1 D S Q Q R Q0 PIN CONFIGURATION CLK2 CLK2 D2 VBB D2 R2 Q0 25 24 23 22 21 20 19 CLK1 CLK1 R1 VEE S1 D1 D1 S2 26 27 28 1 2 3 4 5 6 7 8 9 10 11 18 17 TOP VIEW PLCC J28-1 16 15 14 13 12 Q2 Q2 VCC Q1 Q1 Q0 Q0 CLK0 CLK0 D0 D0 D2 D2 CLK2 CLK2 R2 VBB D S Q Q Q2 Q2 R PIN NAMES Pin D[0:2], D[0:2] CLK[0:2], CLK[0:2] Rn L L Z L Sn L L L Z Qn L H L H S[0:2] R[0:2] VBB Q[0:2], Q[0:2] VCCO Function Differential Data Inputs Differential Clock Inputs Edge Triggered Set Inputs Edge Triggered Reset Inputs VBB Reference Output Differential Data Outputs VCC to Output TRUTH TABLE(1) Dn L H X X CLKn Z Z L L NOTE: 1. Z = LOW-to-HIGH transition. Rev.: C Amendment: /1 1 S0 VCCO Issue Date: February, 1998 R0 Micrel SY10E431 SY100E431 DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0C Symbol VBB Parameter Output Reference Voltage 10E 100E Input HIGH Current Power Supply Current 10E 100E VCMR Common Mode Range -- -- -1.5 110 110 -- 132 132 0 -- -- -1.5 110 110 -- 132 132 0 -- -- -1.5 110 127 -- 132 152 0 V 1 Min. -1.38 -1.38 -- Typ. -- -- -- Max. Min. TA = +25C Typ. -- -- -- Max. TA = +85C Min. Typ. -- -- -- Max. -1.19 -1.26 150 A mA -- -- Unit V -1.27 -1.35 -1.26 -1.38 150 -- -1.25 -1.31 -1.26 -1.38 150 -- Condition -- IIH IEE NOTES: 1. VCMR is referenced to the most positive side of the differential input signal. Normal operation is obtained when the input signals are within the VCMR range and the input swing is greater than VPP (min.) and <1V. AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0C Symbol fMAX tPLH tPHL Parameter Max. Toggle Frequency Propagation Delay to Output CLK (Diff) CLK (SE) R S Set-up Time D R S Hold Time, D Minimum Pulse Width, CLK Within-Device Skew Minimum Input Swing Rise/Fall Time 20% to 80% Min. 1100 450 400 550 550 200 1000 1000 200 400 -- 150 275 Typ. 1400 600 600 725 725 0 700 700 0 -- 50 -- 450 Max. -- 750 800 925 925 -- -- -- -- -- -- -- 650 Min. 1100 450 400 550 550 200 1000 1000 200 400 -- 150 275 TA = +25C Typ. 1400 600 600 725 725 0 700 700 0 -- 50 -- 450 Max. -- 750 800 925 925 -- -- -- -- -- -- -- 650 TA = +85C Min. 1100 450 400 550 550 200 1000 1000 200 400 -- 150 275 Typ. 1400 600 600 725 725 0 700 700 0 -- 50 -- 450 Max. -- 750 800 925 925 ps -- -- -- -- -- -- -- 650 ps ps ps mV ps 1 1 -- -- 2 3 -- Unit MHz ps Condition -- -- tS tH tPW tskew VPP (AC) tr tf NOTES: 1. These set-up times define the minimum time the CLK or SET/RESET input must wait after the assertion of the RESET/SET input to assure the proper operation of the flip-flop. 2. Within-device skew is defined as identical transitions on similar paths through a device. 3. Minimum input swing for which AC parameters are guaranteed. PRODUCT ORDERING CODE Ordering Code SY10E431JC SY10E431JCTR SY100E431JC SY100E431JCTR Package Type J28-1 J28-1 J28-1 J28-1 Operating Range Commercial Commercial Commercial Commercial 2 Micrel SY10E431 SY100E431 28 LEAD PLCC (J28-1) Rev. 03 3 Micrel SY10E431 SY100E431 MICREL-SYNERGY TEL 3250 SCOTT BOULEVARD SANTA CLARA CA 95054 USA FAX + 1 (408) 980-9191 + 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. (c) 2000 Micrel Incorporated 4 |
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