Operation Inputs Accept Voltages SN54AC245 PACKAGE SN74AC245 PACK

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Operation Inputs Accept Voltages SN54AC245 PACKAGE SN74AC245 PACK

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SN54AC245, SN74AC245 OCTAL TRANSCEIVERS WITH 3-STATE OUTPUTS
Operation Inputs Accept Voltages
SN54AC245 PACKAGE SN74AC245 PACKAGE (TOP VIEW)
description/ordering information
'AC245 octal transceivers designed asynchronous two-way communication between data buses. control-function implementation minimizes external timing requirements. When output-enable (OE) low, device passes noninverted data from from bus, depending logic level direction control (DIR) input. high disables device that buses effectively isolated. ensure high-impedance state during power power down, should tied through pullup resistor; minimum value resistor determined current-sinking capability driver.
SN54AC245 PACKAGE (TOP VIEW)
ORDERING INFORMATION
PDIP SOIC -40°C 85°C 40°C SSOP TSSOP CDIP -55°C 125°C LCCC PACKAGE Tube Tube Tape reel Tape reel Tape reel Tape reel Tube Tube Tube ORDERABLE PART NUMBER SN74AC245N SN74AC245DW SN74AC245DWR SN74AC245NSR SN74AC245DBR SN74AC245PWR SNJ54AC245J SNJ54AC245W SNJ54AC245FK TOP-SIDE MARKING SN74AC245N AC245 AC245 AC245 AC245 SNJ54AC245J SNJ54AC245W
SNJ54AC245FK Package drawings, standard packing quantities, thermal data, symbolization, design guidelines available www.ti.com/sc/package.
Please aware that important notice concerning availability, standard warranty, critical applications Texas Instruments semiconductor products disclaimers thereto appears this data sheet.
Copyright 2002, 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.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN54AC245, SN74AC245 OCTAL TRANSCEIVERS WITH 3-STATE OUTPUTS
FUNCTION TABLE INPUTS OPERATION data data Isolation
logic diagram (positive logic)
Seven Other Channels
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage range, -0.5 Input voltage range, (see Note -0.5 Output voltage range, (see Note -0.5 Input clamp current, VCC) Output clamp current, VCC) Continuous output current, VCC) Continuous current through ±200 Package thermal impedance, (see Note package 70°C/W package 58°C/W package 69°C/W package 60°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.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN54AC245, SN74AC245 OCTAL TRANSCEIVERS WITH 3-STATE OUTPUTS
recommended operating conditions (see Note
SN54AC245 Supply voltage High-level input voltage Low-level input voltage Input voltage Output voltage High-level output current Low-level output current Input transition rise fall rate 3.15 3.85 1.35 1.65 SN74AC245 3.15 3.85 1.35 1.65 ns/V UNIT
Dt/Dv
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.
POST OFFICE 655303
DALLAS, TEXAS 75265
SN54AC245, SN74AC245 OCTAL TRANSCEIVERS WITH 3-STATE OUTPUTS
electrical characteristics over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS ports GND, VI(OE) GND, ±0.1 ±0.1 ±0.5 0.002 0.001 0.001 0.36 0.36 0.36 1.65 1.65 2.56 3.86 4.86 25°C SN54AC245 3.85 3.85 0.44 0.44 0.44 SN74AC245 2.46 3.76 4.76 UNIT
more than output should tested time, duration test should exceed ports, parameter includes input leakage current.
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) (OUTPUT) 25°C 11.5 11.5 SN54AC245 11.5 13.5 14.5 13.5 SN74AC245 12.5 13.5 12.5 UNIT
POST OFFICE 655303
DALLAS, TEXAS 75265
SN54AC245, SN74AC245 OCTAL TRANSCEIVERS WITH 3-STATE OUTPUTS
switching characteristics over recommended operating free-air temperature range, (unless otherwise noted) (see Figure
PARAMETER tPLH tPHL tPZH tPZL tPHZ tPLZ FROM (INPUT) (OUTPUT) 25°C SN54AC245 10.5 10.5 10.5 SN74AC245 UNIT
operating characteristics, 25°C
PARAMETER Power dissipation capacitance transceiver TEST CONDITIONS UNIT
PARAMETER MEASUREMENT INFORMATION
From Output Under Test (see Note Open TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open Open
LOAD CIRCUIT Input tPLH In-Phase Output tPHL Out-of-Phase Output VOLTAGE WAVEFORMS tPHL tPLH Output Control (low-level enabling) tPZL Output Waveform (see Note tPZH Output Waveform Open (see Note tPLZ tPHZ
VOLTAGE WAVEFORMS
NOTES: includes probe capacitance. Waveform output with internal conditions such that output except when disabled output control. Waveform output with internal conditions such that output high except when disabled output control. input pulses supplied generators having following characteristics: MHz, outputs measured time with input transition measurement.
Figure Load Circuit Voltage Waveforms
POST OFFICE 655303
DALLAS, TEXAS 75265
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Copyright 2002, Texas Instruments Incorporated

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