EL1056A数据手册Renesas中文资料规格书

描述 Description

The EL1056 is designed to drive high quality test signals into close or terminated loads. It has a dispersion of 250ps or less — whether due to signal size or direction of edge. It can output a very wide 24V output span, encompassing all logic families as well as analog levels. The EL1056 is fabricated in Elantecs oxide isolated process, which eliminates the possibility of latch-up and provides a very durable circuit.
The output can be turned off in two ways; the OE pins allow the output to be put in a high-impedance state which makes the output look like a large resistance in parallel with 3pF, even for back-driven signals with as much as 2.5V/µs slew rate. The E pins put the output in an even higher impedance state, guaranteed to 150nA leakage in the EL1056A. This allows accurate measurements on the bus without disconnecting the EL1056 with a relay.
The EL1056 incorporates an output current sense which can warn the system controller that excessive output current is flowing. The trip point is set by two external resistors.

特性 Features

• Wide ±12V output levels
• 250ps dispersion
• 3ns delay times
• 1V/ns slew rate—adjustable
• Low overshoot and aberrations in 50Ω systems
• Three-state output
• Power-down mode reduces output leakage to nanoamperes
• Overcurrent sense flag available to protect internal output devices
• Buffered analog inputs
• Differential logic inputs are compatible with ECL, TTL, and CMOSApplications
• Memory testers
• ASIC testers
• Functional board testers
• Analog/digital incoming component verifiers
• Logic emulators