100325SCX

Overview

The onsemi 100325SCX is a low-power hex ECL-to-TTL translator housed in a 24-lead Small Outline Integrated Circuit (SOIC) package. It converts F100K logic levels to TTL logic levels using differential inputs that support inverting, non-inverting, or differential receiver configurations. The device includes an internal reference voltage generator for VBB and features 50kΩ pull-down resistors on all inputs. Operating conditions include a VEE supply range of -4.2V to -5.7V and a VTTL supply of +4.5V to +5.5V. Propagation delays range from 0.80ns to 4.80ns depending on load capacitance and temperature.

Feature Summary

• Hex configuration providing six independent translation channels within a single integrated circuit.
• Differential input architecture allowing flexible operation as inverting, non-inverting, or differential receivers.
• Integrated internal reference voltage generator simplifies single-ended operation and Schmitt trigger applications.
• Standard FAST outputs ensure compatibility with TTL logic families while maintaining high-speed performance.

Applications

• Converting ECL logic signals to TTL logic levels in mixed-logic systems.
• Interface circuits between F100K logic families and standard TTL components.
• High-speed data transmission lines requiring differential signal reception.

Procurement Notes

Verify the specific suffix 'X' indicates tape and reel packaging when ordering. Confirm the industrial temperature grade (-40°C to +85°C) matches system requirements. Ensure power supply sequencing allows VEE and VTTL application in either order. Check for RoHS compliance status if required by project specifications.

Selection Notes

Select this component when interfacing ECL sources with TTL destinations in space-constrained designs. The SOIC package offers a compact footprint compared to DIP alternatives. Consider the propagation delay specifications against system timing budgets. Evaluate the power reduction benefits relative to older 100125 equivalents for efficiency optimization.

Part Context

This device belongs to the 100325 series of low-power translators originally developed by Fairchild Semiconductor. It serves as a functional replacement for the 100125 model, offering pin and function compatibility alongside improved power efficiency. The technology supports legacy ECL systems transitioning to or coexisting with TTL standards.

Replacement Considerations

The 100325 is directly compatible with the 100125 regarding pinout and AC specifications. Verify package availability as the SCX suffix specifically denotes the SOIC form factor. Cross-reference electrical characteristics to ensure tolerance alignment for critical timing applications.