Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLogic ICsLogic IC - Comparator DIP 20 No. of bits 8 A=B, A>B 2 V

SN54HC684, SN74HC684

8-BIT MAGNITUDE COMPARATORS

SCLS340B – MARCH 1996 – REVISED MARCH 2003

POST OFFICE BOX 655303 • DALLAS, TEXAS 75265

Wide Operating Voltage Range of 2 V to 6 V

High-Current Outputs Drive Up To 10

LSTTL Loads

Low Power Consumption, 80-µA Max I

Typical t

= 22 ns

±4-mA Output Drive at 5 V

Low Input Current of 1 µA Max

Compare Two 8-Bit Words

SN54HC684 ...J OR W PACKAGE

SN74HC684 . . . DW OR N PACKAGE

(TOP VIEW)

SN54HC684 . . . FK PACKAGE

(TOP VIEW)

3212019

910111213

P > Q

GND

P = Q

P > Q

GND

P = Q

description/ordering information

These magnitude comparators perform comparisons of two 8-bit binary or BCD words. These devices provide

P = Q

and P > Q outputs.

ORDERING INFORMATION

PACKAGE

†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N Tube SN74HC684N SN74HC684N

–40°C to 85°C

SOIC DW

Tube SN74HC684DW

HC684

SOIC

–

Tape and reel SN74HC684DWR

HC684

CDIP – J Tube SNJ54HC684J SNJ54HC684J

–55°C to 125°C

CFP – W Tube SNJ54HC684W SNJ54HC684W

LCCC – FK Tube SNJ54HC684FK SNJ54HC684FK

†

Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

FUNCTION TABLE

DATA

INPUTS

OUTPUTS

INPUTS

P, Q

P = Q P > Q

P = Q L H

P > Q H L

P < Q H H

The P < Q function can be

generated by applying P = Q

and P > Q to a 2-input NAND

gate.

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information current as of publication date. Products conform to

specifications per the terms of Texas Instruments standard warranty.

Production processing does not necessarily include testing of all

parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Summary of content (12 pages)

PAGE 1
SN54HC684, SN74HC684 8-BIT MAGNITUDE COMPARATORS SCLS340B – MARCH 1996 – REVISED MARCH 2003 D D D D D D D Wide Operating Voltage Range of 2 V to 6 V High-Current Outputs Drive Up To 10 LSTTL Loads Low Power Consumption, 80-µA Max ICC Typical tpd = 22 ns ±4-mA Output Drive at 5 V Low Input Current of 1 µA Max Compare Two 8-Bit Words SN54HC684 . . .
PAGE 2
SN54HC684, SN74HC684 8-BIT MAGNITUDE COMPARATORS SCLS340B – MARCH 1996 – REVISED MARCH 2003 logic diagram (positive logic) 19 P0 Q0 P1 Q1 P2 Q2 P3 Q3 P4 Q4 P5 Q5 P6 Q6 P7 Q7 2 P=Q 2 3 4 5 6 7 8 9 11 12 1 13 14 15 16 17 18 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 P>Q
PAGE 3
SN54HC684, SN74HC684 8-BIT MAGNITUDE COMPARATORS SCLS340B – MARCH 1996 – REVISED MARCH 2003 absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage range, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 7 V Input voltage range, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.
PAGE 4
SN54HC684, SN74HC684 8-BIT MAGNITUDE COMPARATORS SCLS340B – MARCH 1996 – REVISED MARCH 2003 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC IOH = –20 µA VOH VI = VIH or VIL IOH = –4 mA IOH = –5.2 mA IOL = 20 µA VOL VI = VIH or VIL IOL = 4 mA IOL = 5.2 mA IIH IIL VI = VCC VI = 0 ICC Ci VI = VCC or 0, IO = 0 MIN TA = 25°C TYP MAX SN54HC684 MIN MAX SN74HC684 MIN 2V 1.9 1.998 1.9 1.9 4.5 V 4.4 4.
PAGE 5
SN54HC684, SN74HC684 8-BIT MAGNITUDE COMPARATORS SCLS340B – MARCH 1996 – REVISED MARCH 2003 PARAMETER MEASUREMENT INFORMATION From Output Under Test Test Point Input VCC 50% 50% 0V CL = 50 pF (see Note A) tPLH In-Phase Output LOAD CIRCUIT 50% 10% tPHL 90% 90% tr Input 50% 10% 90% 90% tr tPHL VCC 50% 10% 0 V Out-of-Phase Output 90% tf VOH 50% 10% VOL tf tPLH 50% 10% tf 50% 10% 90% VOH VOL tr VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES VOLTAGE WAVEFORM INPUT RI
PAGE 6
PACKAGE OPTION ADDENDUM www.ti.
PAGE 7
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device SN74HC684DWR Package Package Pins Type Drawing SOIC DW 20 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2000 330.0 24.4 Pack Materials-Page 1 10.8 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 13.0 2.7 12.0 24.
PAGE 8
PACKAGE MATERIALS INFORMATION www.ti.com 14-Jul-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) SN74HC684DWR SOIC DW 20 2000 367.0 367.0 45.
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