NOT RECOMMENDED FOR NEW DESIGNS Precison Edge SY10E195 Precison Edge Micrel, Inc. SY100E195 PROGRAMMABLE SY10E195 DELAY CHIP SY100E195 FEATURES DESCRIPTION Up to 2ns delay range The SY10/100E195 are programmable delay chips (PDCs) designed primarily for clock de-skewing and timing Extended 100E VEE range of 4.2V to 5.5V adjustment. They provide variable delay of a differential 20ps/digital step resolution ECL input transition. >1GHz bandwidth The delay section consists of a chain of gates On-chip cascade circuitry organized as shown in the logic diagram. The first two delay elements feature gates that have been modified to 75Kk input pulldown resistor have delays 1.25 and 1.5 times the basic gate delay of Fully compatible with Motorola MC10E/100E195 approximately 80ps. These two elements provide the Available in 28-pin PLCC package E195 with a digitally-selectable resolution of approximately 20ps. The required device delay is selected by the seven address inputs D 0:6 , which are latched on-chip by a high signal on the latch enable (LEN) control. If the LEN signal is either LOW or left floating, then the latch is transparent. Because the delay programmability of the E195 is achieved by purely differential ECL gate delays, the device will operate at frequencies of >1GHz, while maintaining over 600mV of output swing. The E195 thus offers very fine resolution, at very high frequencies, selectable entirely from a digital input, allowing for very accurate system clock timing. An eighth latched input, D7, is provided for cascading multiple PDCs for increased programmable range. The cascade logic allows full control of multiple PDCs, at the expense of only a single added line to the data bus for each additional PDC, without the need for any external gating. PIN NAMES Pin Function IN/IN Signal Input EN Input Enable D 0:7 Mux Select Inputs Q/Q Signal Output LEN Latch Enable SET MIN Minimum Delay Set SET MAX Maximum Delay Set CASCADE Cascade Signal Rev.: H Amendment: /0 M9999-032006 1 Issue Date: March 2006 hbwhelp micrel.com or (408) 955-1690 Precison Edge SY10E195 Micrel, Inc. SY100E195 PACKAGE/ORDERING INFORMATION (1) Ordering Information Package Operating Package Lead Part Number Type Range Marking Finish 25 24 23 22 21 20 19 D1 26 18 NC SY10E195JC J28-1 Commercial SY10E195JC Sn-Pb D0 27 17 NC (2) SY10E195JCTR J28-1 Commercial SY10E195JC Sn-Pb LEN 28 16 VCC TOP VIEW SY100E195JI J28-1 Industrial SY100E195JI Sn-Pb VEE 1 15 PLCC VCCO J28-1 (2) IN 2 14 Q SY100E195JITR J28-1 Industrial SY100E195JI Sn-Pb IN 3 13 Q (3) SY10E195JZ J28-1 Commercial SY10E195JZ with Matte-Sn VBB 4 12 VCCO Pb-Free bar-line indicator 56 7 8 9 10 11 (2, 3) SY10E195JZTR J28-1 Commercial SY10E195JZ with Matte-Sn Pb-Free bar-line indicator (3) SY100E195JY J28-1 Industrial SY100E195JY with Matte-Sn Pb-Free bar-line indicator (2, 3) SY100E195JYTR J28-1 Industrial SY100E195JY with Matte-Sn 28-Pin PLCC (J28-1) Pb-Free bar-line indicator Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. M9999-032006 2 hbwhelp micrel.com or (408) 955-1690 D2 NC NC D3 D4 EN SET MIN D5 SET MAX D6 CASCADE D7 CASCADE NC