SY100S370 Datasheet | Micrel Semiconductor

Micrel, Inc. NOT REMENDED FOR NEW DESIGNS UNIVERSAL DEMULTIPLEXER/ DECODER Features DESCRIPTION s Max. propagation delay of 1200ps s IEE min. of - 92m A s Industry standard 100K ECL levels s Extended supply voltage option: VEE = - 4.2V to - 5.5V s Voltage and temperature pensation for improved noise immunity s Internal 75kΩ input pull-down resistors s 60% faster than National or Signetics s Approximately 40% lower power than Fairchild s Function and pinout patible with Fairchild F100K s Available in 28-pin PLCC packages The SY100S370 is a universal demultiplexer/decoder that can be used as either a dual 1-of-4 decoder or as a single 1-of-8 decoder and is designed for use in highperformance ECL systems. The Mode control (M) input determines the function. In the dual 1-of-4 mode, each 4input group has a pair of active-LOW Enable (E) inputs. The Enable pins are assigned such that in the single 1-of8 mode they can be tied together in pairs to result in two active-LOW Enable inputs. E1a will be tied to E1b and E2a to E2b. The auxiliary inputs (Hn) are used to determine whether the outputs are active-HIGH or active-LOW. The address inputs for the dual 1-of-4 mode are A0a, A1a, A0b. A2a is unused. In the 1-of-8 mode, the address inputs are A0a, A1a, A2a. The inputs on the device have 75kΩ pull-down resistors. PIN NAMES Pin Ana, Anb Ena, Enb M Ha Hb Hc Z0 - Z7 Zna, Znb VEES VCCA Function Address Inputs (n = 0,1,2) Enable Inputs (n = 1,2) Mode Control Input Z0 - Z3 (Z0a - Z3a) Polarity Select Input Z4 - Z7 (Z0b - Z3b) Polarity Select Input mon Polarity Select Input Single 1-of-8 Data Outputs Dual 1-of-4 Data Outputs (n = 1...4) VEE Substrate VCCO for ECL Outputs M9999-042307 hbwhelp@micrel. or (408) 955-1690 Rev.: I Amendment: /0 Issue Date: April 2007 Micrel, Inc. PACKAGE/ORDERING INFORMATION A2a M A1a VEES A0a Z1a (Z1) Z2a (Z2) Ordering Information Package Operating Package Lead...