Wide Operating Voltage Range High-Current Outputs Drive LSTTL Loads Po
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SN54HC688, SN74HC688 8-BIT IDENTITY COMPARATORS
Wide Operating Voltage Range High-Current Outputs Drive LSTTL Loads Power Consumption, 80-µA
SN54HC688 PACKAGE SN74HC688 PACKAGE (TOP VIEW)
Typical ±4-mA Output Drive Input Current Compare 8-Bit Words
SN54HC688 PACKAGE (TOP VIEW)
description/ordering information
These identity comparators perform comparisons 8-bit binary words. output-enable (OE) input used force output high level. ORDERING INFORMATION
PDIP -40°C 85°C SOIC TSSOP CDIP -55°C 125°C LCCC PACKAGE Tube Tube Reel 2000 Tube 2000 Reel Tube Tube Tube ORDERABLE PART NUMBER SN74HC688N SN74HC688DW SN74HC688DWR SN74HC688PWR SN74HC688PWT SNJ54HC688J SNJ54HC688W SNJ54HC688FK TOP-SIDE MARKING SN74HC688N HC688 HC688 SNJ54HC688J SNJ54HC688W SNJ54HC688FK
Package drawings, standard packing quantities, thermal data, symbolization, design guidelines available www.ti.com/sc/package. FUNCTION TABLE INPUTS DATA OUTPUT
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
Copyright 2003, Texas Instruments Incorporated
products compliant MIL-PRF-38535, parameters tested unless otherwise noted. other products, production processing does necessarily include testing parameters.
PRODUCTION DATA information current publication date. Products conform specifications terms Texas Instruments standard warranty. Production processing does necessarily include testing parameters.
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SN54HC688, SN74HC688 8-BIT IDENTITY COMPARATORS
logic diagram (positive logic)
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, -0.5 Input clamp current, VCC) (see Note Output clamp current, VCC) (see Note Continuous output current, VCC) Continuous current through Package thermal impedance, (see Note package 58°C/W package 69°C/W package 83°C/W Storage temperature range, Tstg -65°C 150°C
Stresses beyond those listed under "absolute maximum ratings" cause permanent damage device. These stress ratings only, functional operation device these other conditions beyond those indicated under "recommended operating conditions" implied. Exposure absolute-maximum-rated conditions extended periods affect device reliability. NOTES: input output voltage ratings exceeded input output current ratings observed. package thermal impedance calculated accordance with JESD 51-7.
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SN54HC688, SN74HC688 8-BIT IDENTITY COMPARATORS
recommended operating conditions (see Note
SN54HC688 Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage Input transition (rise fall) time 3.15 1.35 1000 SN74HC688 3.15 1.35 1000 UNIT
Operating free-air temperature NOTE unused inputs device must held ensure proper device operation. Refer application report, Implications Slow Floating CMOS Inputs, literature number SCBA004.
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS -5.2 3.98 5.48 25°C 1.998 4.499 5.999 0.002 0.001 0.001 0.17 0.15 ±0.1 0.26 0.26 ±100 SN54HC688 ±1000 SN74HC688 3.84 5.34 0.33 0.33 ±1000 UNIT
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SN54HC688, SN74HC688 8-BIT IDENTITY COMPARATORS
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER FROM (INPUT) (OUTPUT) 25°C SN54HC688 SN74HC688 UNIT
operating characteristics, 25°C
PARAMETER Power dissipation capacitance TEST CONDITIONS load UNIT
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SN54HC688, SN74HC688 8-BIT IDENTITY COMPARATORS
PARAMETER MEASUREMENT INFORMATION
From Output Under Test Test Point (see Note In-Phase Output Input tPLH tPHL Out-of-Phase Output Input tPLH tPHL
LOAD CIRCUIT
VOLTAGE WAVEFORM INPUT RISE FALL TIMES
VOLTAGE WAVEFORMS PROPAGATION DELAY OUTPUT TRANSITION TIMES
NOTES: includes probe test-fixture capacitance. Phase relationships between waveforms were chosen arbitrarily. input pulses supplied generators having following characteristics: MHz, outputs measured time with input transition measurement. tPLH tPHL same tpd.
Figure Load Circuit Voltage Waveforms
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MECHANICAL DATA
MLCC006B OCTOBER 1996
(S-CQCC-N**)
TERMINAL SHOWN
LEADLESS CERAMIC CHIP CARRIER
TERMINALS
0.342 (8,69) 0.442 (11,23) 0.640 (16,26) 0.739 (18,78) 0.938 (23,83) 1.141 (28,99) 0.358 (9,09) 0.458 (11,63) 0.660 (16,76) 0.761 (19,32) 0.962 (24,43) 1.165 (29,59) 0.307 (7,80) 0.406 (10,31) 0.495 (12,58) 0.495 (12,58) 0.850 (21,6) 1.047 (26,6)
0.358 (9,09) 0.458 (11,63) 0.560 (14,22) 0.560 (14,22) 0.858 (21,8) 1.063 (27,0)
0.080 (2,03) 0.064 (1,63) 0.020 (0,51) 0.010 (0,25)
0.020 (0,51) 0.010 (0,25)
0.055 (1,40) 0.045 (1,14)
0.045 (1,14) 0.035 (0,89)
0.028 (0,71) 0.022 (0,54) 0.050 (1,27)
0.045 (1,14) 0.035 (0,89)
4040140 10/96 NOTES: linear dimensions inches (millimeters). This drawing subject change without notice. This package hermetically sealed with metal lid. terminals gold plated. Falls within JEDEC MS-004
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MECHANICAL DATA
MTSS001C JANUARY 1995 REVISED FEBRUARY 1999
(R-PDSO-G**)
PINS SHOWN
PLASTIC SMALL-OUTLINE PACKAGE
0,65
0,30 0,19
0,10
0,15 4,50 4,30 6,60 6,20 Gage Plane 0,25 0,75 0,50
Seating Plane 1,20 0,15 0,05 0,10
PINS
3,10
5,10
5,10
6,60
7,90
9,80
2,90
4,90
4,90
6,40
7,70
9,60
4040064/F 01/97 NOTES: linear dimensions millimeters. This drawing subject change without notice. Body dimensions include mold flash protrusion exceed 0,15. Falls within JEDEC MO-153
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