MC100EP91DWR2G

Translators, Level Shifters Overview

The MC100EP91DWR2G is a triple any-level positive input to NECL output translator manufactured by onsemi. It accepts LVPECL, LVTTL, LVCMOS, HSTL, CML, or LVDS signals and translates them to differential NECL outputs (-3.0 V/-5.5 V). The device operates with three power rails: VCC (2.375 V to 3.8 V), VEE (-3.0 V to -5.5 V), and GND (0 V). Key electrical parameters include a maximum input clock frequency exceeding 2.0 GHz typical, a maximum input data rate exceeding 2.0 Gb/s typical, and a typical propagation delay of 500 ps. It is housed in a SOIC-20 Wide Body package.

Translators, Level Shifters Feature Summary

• Accepts multiple input signal standards including LVPECL, LVTTL, LVCMOS, HSTL, CML, and LVDS for flexible system integration.
• Translates positive logic inputs to differential NECL outputs suitable for high-speed negative voltage environments.
• Features internal biasing that forces Q outputs low and Q-bar outputs high when inputs are open or grounded, ensuring circuit stability.

Translators, Level Shifters Applications

• High-speed data communication systems requiring level translation between different logic families.
• Clock distribution networks utilizing NECL receivers.
• Mixed-signal interfaces connecting positive voltage logic sources to negative voltage ECL-based loads.

Translators, Level Shifters Procurement Notes

Verify the specific ordering suffix DWR2G corresponds to the SOIC-20 Wide Body package with tape and reel shipping configuration. Confirm RoHS compliance and lead-free status as indicated by the 'G' marking. Ensure design requirements align with the specified operating temperature range of -40°C to +85°C and the required three-power-rail supply architecture.

Translators, Level Shifters Selection Notes

Select this component when interfacing positive voltage logic standards such as LVCMOS or LVPECL with NECL-compatible downstream devices. The device supports up to three independent channels within a single package. Designers must account for the requirement of separate positive and negative supply rails and ensure proper decoupling of VCC and VEE pins with 0.01 µF capacitors to ground.

Translators, Level Shifters Part Context

This part belongs to the MC100EP91 series of translators from onsemi. The DWR2G suffix specifically denotes the SOIC-20 Wide Body package variant supplied in a 1000-unit tape and reel format. Other variants in the family include tube-packaged versions like the DWG and the discontinued MN suffix QFN-24 package.

Translators, Level Shifters Replacement Considerations

The NB100LVEP91DWG is listed as a manufacturer-recommended alternative for the MC100EP91DWG. Verify pinout compatibility and electrical specifications before substituting, as package and performance characteristics may differ between the EP91 and LVEP91 series.

Translators, Level Shifters FAQ

How does the device behave if the differential inputs are left open?

Under open input conditions, the D input is biased at VCC/2 and the D-bar input is pulled to GND. This forces the Q outputs to a low state and the Q-bar outputs to a high state, ensuring system stability.

What is the function of the VBB pin?

The VBB pin provides an internally generated PECL reference voltage. It can be used as a switching reference for single-ended inputs or to rebias AC-coupled inputs. When used, it must be decoupled via a 0.01 µF capacitor.