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SN74LS85N +BOM

AB 45ns@5V,15pF 4.75V~5.25V 4 PDIP-16 Digital Comparators ROHS

Manufacturer:

Texas Instruments
Mfr.Part #:

SN74LS85N
Datasheet:

SN74LS85N Datasheet (PDF)
Number Of Channels:

4
Technology Family:

LS
Input Type:

Schmitt-Trigger
Output Type:

Push-Pull
EDA/CAD Models:

Request Free CAD Models for SN74LS85N

SN74LS85N General Description

These four-bit magnitude comparators perform comparison of straight binary and straight BCD (8-4-2-1) codes. Three fully decoded decisions about two 4-bit words (A, B) are made and are externally available at three outputs. These devices are fully expandable to any number of bits without external gates. Words of greater length may be compared by connecting comparators in cascade. The A > B, A < B, and A = B outputs of a stage handling less-significant bits are connected to the corresponding A > B, A < B, and A = B inputs of the next stage handling more-significant bits. The stage handling the least-significant bits must have a high-level voltage applied to the A = B input. The cascading paths of the '85, 'LS85, and 'S85 are implemented with only a two-gate-level delay to reduce overall comparison times for long words. An alternate method of cascading which further reduces the comparison time is shown in the typical application data.

Key Features

Description

Specifications

Number of channels	4	Technology family	LS
Input type	Schmitt-Trigger	Output type	Push-Pull
Features	High speed (tpd 10-50ns)	Operating temperature range (°C)	0 to 70
Rating	Catalog