SY100ELT21L 3.3V Differential LVPECL-to-LVTTL Translator Features General Description 3.3V Power Supply The SY100ELT21L is a single differential LVPECL-to-LVTTL translator that uses a single +3.3V 2.0 ns Typical Propagation Delay power supply. Because LVPECL (low voltage positive Low Power ECL) levels are used, only +3.3V and ground are Differential LVPECL Inputs required. The small outline 8-lead SOIC package and 2 4 mA TTL Outputs low skew single gate design make the ELT21L ideal for Flow-Through Pinouts applications that require the translation of a clock or data signal where minimal space, low power, and low Available in 8-Lead SOIC Package cost are critical. VBB allows a differential, single-ended, or AC-coupled interface to the device. If used, the VBB output should be bypassed to VCC with a 0.01 F capacitor. Under open input conditions, the /D will be biased at a V /2 voltage level and the D input will be pulled to CC ground. This condition will force the Q output low to provide added stability. The ELT21L is compatible with positive ECL 100K logic levels. Package Type SY100ELT21L 8-Lead SOIC (Top View) NC 1 8 VCC TTL D 2 7 Q PECL D 3 6 NC VBB 4 5 GND 2019 Microchip Technology Inc. 1DS20006213A-page SY100ELT21L 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Power Supply Voltage (V ) .....................................................................................................................0.5V to +3.8V CC PECL Input Voltage (V ) ........................................................................................................................ 0V to V +0.5V IN CC Voltage Applied to Output at High State (V ) ...........................................................................................0.5V to V OUT CC Current Applied to Output at Low State (I ) ........................................................................Twice the Rated I in mA OUT OL Permanent device damage can occur if absolute maximum ratings are exceeded. This is a stress rating only Notice: and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. TTL DC ELECTRICAL CHARACTERISTICS Electrical Characteristics: V = +3.3V 5% Values valid from 40C to +85C unless otherwise noted. CC Parameter Symbol Min. Typ. Max. Units Conditions Output Short Circuit I 275 80 mA V = 0V OS OUT Current 20 Valid for 40C, 0C, and +85C Power Supply Current I mA CC 14 20 Valid for +25C 2.0 V I = 3.0 mA Output High Voltage V OH OH 0.5 V I = 24 mA Output Low Voltage V OL OL PECL DC ELECTRICAL CHARACTERISTICS Electrical Characteristics: V = +3.3V 5% Values valid from 40C to +85C unless otherwise noted. CC Parameter Symbol Min. Typ. Max. Units Conditions 150 A Input High Current I IH 0.5 A Input Low Current I IL 2135 2420 mV Note 1 Input High Voltage V IH 1490 1825 mV Note 1 Input Low Voltage V IL 1.2 V V Common Mode Range V CMR CC 1920 2040 Note 1, Valid for 40C, 0C, and +85C Reference Output V mV BB 1920 1980 2040 Note 1, Valid for +25C = 3.3V. Level specifications will vary 1:1 V . Note 1: These values are for V CC CC DS20006213A-page 2 2019 Microchip Technology Inc.