E818AHF View Datasheet(PDF) - Semtech Corporation

Part Name

Description

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E818AHF

Octal 18V Pin Electronics Driver/window Comparator

Semtech Corporation 

TEST AND MEASUREMENT PRODUCTS

Circuit Description (continued)

The comparator outputs are "Flex Out". They are technology

independent and may be adjusted over a wide voltage

common mode range. COMP HIGH and COMP LOW are

analog inputs which set the digital high and low levels

(respectively) of QA and QB. COMP HIGH and COMP LOW

are unbuffered inputs that provide the necessary drive

current, so the sources for these levels must have adequate

current capability.

COMP HIGH

QAX, QBX

COMP LOW

Figure 2. Simplified Model of the

Unbuffered Comparator Output Stage

Typically, COMP HIGH and COMP LOW will be connected

to the digital power supplies of the chip receiving QA and

QB.

Receiver Headroom

There is ~3V of headroom required between the

comparator thresholds and both power supply levels.

VEE + 3.0 ≤ CVA, CVB ≤ VCC – 3.0

Edge818

 2004 Semtech Corp. / Rev. 5, 8/18/04

5

www .semtech.com

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