SY10EL05ZI

Overview

The SY10EL05ZI is a 2-input differential AND/NAND gate from the Micrel ECL family, housed in an 8-pin SOIC package. It operates with VEE supply voltages ranging from -4.75V to -5.5V and VCC connected to ground. The device features internal 75KΩ input pull-down resistors and clamp circuitry for open inputs. Propagation delay (tPD) ranges from 135ps to 440ps depending on temperature. Output rise/fall times are between 100ps and 350ps. Power supply current is typically 18mA at +25°C.

Feature Summary

• Supports differential AND/NAND logic functions with equivalent OR/NOR capability via inverted inputs
• Includes internal 75KΩ input pull-down resistors and input clamp circuitry
• Provides high bandwidth output transitions with guaranteed AC parameters over temperature

Applications

• High-speed digital logic circuits requiring differential signaling
• AC performance critical applications needing fast propagation delays
• Systems utilizing ECL-compatible logic families

Procurement Notes

Verify that the specific part number matches the industrial operating temperature range (-40°C to +85°C). Confirm the package type is the standard 8-pin SOIC (.150 inch wide). Ensure power supply requirements align with the specified VEE voltage range of -4.75V to -5.5V. Check for lead finish specifications if RoHS compliance is required for the design.

Selection Notes

Select this component when differential logic gates with low propagation delay are necessary. The industrial grade variant ensures operation across a wider temperature spectrum compared to commercial versions. Consider the internal pull-down resistors for simplified biasing in open input scenarios. Evaluate the 8-pin SOIC footprint against available board space constraints.

Part Context

This device belongs to the SY10/100EL series of ECL logic gates manufactured by Micrel. It serves as a functional equivalent to older E404 devices but offers significantly faster performance capabilities. The series includes various packaging options and temperature grades to suit different system requirements.

Replacement Considerations

SY10EL05ZC (Commercial grade)

FAQ

Can the SY10EL05ZI function as an OR gate?

Yes, because a negative 2-input NAND is equivalent to a 2-input OR function with inverted inputs, the differential inputs and outputs allow it to be used as a 2-input differential OR/NOR gate.

What happens if one set of inputs is left open?

The differential inputs employ clamp circuitry so that under open conditions pulled down to VEE, the input to the AND gate will be HIGH, allowing the gate to remain active to the other input.