Part Number: 74HC85

Function: 4-bit magnitude comparator

Package: DIP, SOP 16 Pin Type

Manufacturer: Philips Electronics ( https://www.nxp.com/ )

Pinouts:

 

Description

The 74HC85 / 74HCT85 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A.
The devices are 4-bit magnitude comparators that can be expanded to almost any length. They perform comparison of two 4-bit binary, BCD or other monotonic codes and present the three possible magnitude results at the outputs.

The operation of the “85” is described in the function table, showing all possible logic conditions. The upper part of the table describes the normal operation under all conditions that will occur in a single device or in a series expansion scheme.

Features

1. Serial or parallel expansion without extra gating

2. Magnitude comparison of any binary words

3. Output capability : standard

4. ICC category : MSI

Other data sheets are available within the file:

7485, 74HC85D, 74HC85N, 74HC85PW

 

74HC85 Datasheet PDF Download

Part Number: MAX998ESA

Function: Single-supply, High-speed, Low-power Comparator.

Package: SO 8 Pin,  SOT-23 Type

Manufacturer: Maxim Integrated

Pinouts:

 

Description

The MAX976, MAX978, MAX998ESA dual/quad/single, high speed, low-power comparators are optimized for +3V/+5V single-supply applications. They achieve a 20ns propagation delay while consuming only 225µA supply current per comparator. The MAX998 features a low-power shutdown mode that places the output in a high-impedance state and reduces supply current to 1nA.
The MAX976, MAX978, MAX998 inputs have a common mode voltage range that extends 200mV below ground. Their outputs are capable of rail-to-rail operation with out external pullup circuitry, making these devices ideal for interface with CMOS/TTL logic. All inputs and out puts can tolerate a continuous short-circuit fault condition to either rail. The comparators’ internal hysteresis ensures clean output switching, even with slow-moving input signals.

For space-critical applications, the single MAX998 is available in a 6-pin SOT23 package, the dual MAX976 is available in an 8-pin µMAX®package, and the quad MAX978 is available in a 16-pin QSOP package.

Features

1. Single-Supply Operation Down to 2.7V

2. 20ns Propagation Delay

3. 225µA Supply Current

4. 1nA Shutdown Supply Current

5. Rail-to-Rail Outputs

6. Ground-Sensing Inputs

7 .Internal Hysteresis Ensures Clean Switching

MAX998ESA Datasheet PDF Download

Other data sheets are available within the file:

MAX976ESA, MAX976EUA, MAX978EEE, MAX978ESE, MAX998