3-BIT 4:1 MULTIPLEXER DESCRIPTION FEATURES ■ ■ ■ ■ ■ 725ps max. D to output Extended 100E VEE range of –4.2V to –5.5V Differential outputs Split select architecture Fully compatible with industry standard 10KH, 100K ECL levels ■ Internal 75KΩ input pulldown resistors ■ Fully compatible with Motorola MC10E/100E171 ■ Available in 28-pin PLCC package The SY10/100E171 offer three 4:1 multiplexers with differential outputs, designed for use in new, highperformance ECL systems. The leading 4-bit multiplexer operation is organized pairwise, with each pair being a 2bit multiplexer. Separate select (SEL1A, SEL1B) controls are provided within each pair. The SEL1A and SEL1B signals control the leading multiplexers, while the SEL2 signal controls the output multiplexer. The three select signals can be used to determine which of the four data inputs will be propagated to the corresponding outputs. D1c D1d D2a D2b D2c D2d 2:1 MUX SEL 2:1 MUX SEL 2:1 MUX SEL 2:1 MUX SEL Q1 2:1 MUX SEL Q2 VCCO D2b D2a D2d D2c 26 18 SEL1B SEL2 VEE 27 17 NC NC D1c Q2 Q2 15 VCC Q1 14 Q1 3 13 4 12 VCCO Q0 28 16 TOP VIEW PLCC J28-1 1 2 5 6 7 8 9 10 11 Q1 Q0 D1b 2:1 MUX SEL SEL1A VCCO D1a 25 24 23 22 21 20 19 Q0 D0b D0d 2:1 MUX SEL Q0 D0c D0d D0c 2:1 MUX SEL D1d D0a D0b 2:1 MUX SEL PIN CONFIGURATION D1b D1a BLOCK DIAGRAM D0a SY10E171 SY100E171 PIN NAMES Q2 Pin SEL1A SEL1B SEL2 Function D0x–D2x Data Inputs SEL1A, SEL1B First-stage Select Inputs SEL2 Second-stage Select Input Q0–Q2 True Output Q0–Q2 Inverted Output VCCO VCC to Output Rev.: C 1 Amendment: /1 Issue Date: February, 1998 SY10E171 SY100E171 Micrel TRUTH TABLE Pin State Operation SEL2 H Output c/d data SEL1A H Input d data SEL1B H Input b data DC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0°C Symbol Parameter TA = +25°C Min. Typ. Max. Min. Typ. IIH Input HIGH Current IEE Power Supply Current 10E 100E TA = +85°C Max. Min. Typ. Max. Unit Condition — — 150 — — 150 — — 150 µA — mA — — — 56 56 67 67 — — 56 56 67 67 — — 56 65 67 77 Unit Condition ps — ps 1 ps — AC ELECTRICAL CHARACTERISTICS VEE = VEE (Min.) to VEE (Max.); VCC = VCCO = GND TA = 0°C Symbol Parameter tPLH tPHL Propagation Delay to Output D SEL1 SEL2 tskew Within-Device Skew Dnm, Dnm to Qn Da, Db, Dc, Dd to Q tr tf Rise/Fall Time 20% to 80% TA = +25°C TA = +85°C Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. 275 450 350 480 650 550 650 850 700 275 450 350 480 650 550 650 850 700 275 450 350 480 650 550 650 850 700 — — 60 40 — — — — 60 40 — — — — 60 40 — — 300 475 650 300 475 650 300 475 650 NOTE: 1. Within-device skew is defined as identical transitions on similar paths through a device; n = 0, 1, 2 m = a, b, c, d. PRODUCT ORDERING CODE Ordering Code Package Type Operating Range SY10E171JC J28-1 Commercial SY10E171JCTR J28-1 Commercial SY100E171JC J28-1 Commercial SY100E171JCTR J28-1 Commercial 2 SY10E171 SY100E171 Micrel 28 LEAD PLCC (J28-1) Rev. 03 3 SY10E171 SY100E171 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