Details, datasheet, quote on part number: DP84240J
PartDP84240J
Category
DescriptionTri-state Drivers Which are Designed For Heavy Capacitive Load Applications
CompanyNational Semiconductor Corporation
DatasheetDownload DP84240J datasheet
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Features, Applications

The DP84240 and DP84244 are octal TRI-STATE drivers which are designed for heavy capacitive load applications such as fast data buffers or as memory address drivers The is an inverting driver which is pin-compatible with both the 74S240 and AM2965 The is a non-inverting driver which is pin-compatible with the 74S244 and AM2966 These parts are fabricated using an oxide isolation process for much faster speeds and are specified for 250 pF and 500 pF load capacitances

TRI-STATE is a registered trademark of National Semiconductor Corp
Features

tpd specified with 250 pF and 500 pF loads Output specified from 2 7V Designed for symmetric rise and fall times 500 pF Outputs glitch free at power up and power down PNP inputs reduce DC loading on bus lines Low static and dynamic input capacitance Low skew times between edges and pins AC parameters specified with all outputs switching simultaneously

H e High Level L e Low Level X e Don't Care Z e High Impedance

If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage VCC Logical ``1'' Input Voltage Logical ``0'' Input Voltage Storage Temperature Range Power Dissipation Cavity Package Molded Package Lead Temperature (soldering 10 sec 1 5V

Symbol VIN(0) IIN(1) Parameter Logical ``1'' Input Voltage Logical ``0'' Input Voltage Logical ``1'' Input Current VIN 2 7V VIN 0V IIN(0) VCLAMP VOH VOL I1D I0D Hi-Z ICC Logical ``0'' Input Current Input Clamp Voltage Logical ``1'' Output Voltage Logical ``0'' Output Voltage Logical ``1'' Drive Current Logical ``0'' Drive Current TRI-STATE Output Current Supply Current DP84240

0 s VIN 0 4V IIN b18 mA IOH b100 mA IOH b1 mA IOL 10 mA IOL 12 mA VOUT 1 5V VOUT 4V s VOUT 2 7V All Outputs Open All Outputs High All Outputs Low All Outputs Hi-Z All Outputs High All Outputs Low All Outputs Hi-Z

Note 1 ``Absolute Maximum Ratings'' are those values beyond which the safety of the device cannot be guaranteed Except for ``Operating Temperature Range'' they are not meant to imply that the devices should be operated at these limits The table of ``Electrical Characteristics'' provides conditions for actual device operation Note 2 All currents into device pins shown as positive all currents out of device pins shown as negative all voltages referenced to ground unless otherwise noted All values shown as max or min are on an absolute value basis Note 3 Typical characteristics are taken at VCC 5 0V and 25 C Note 4 The output-to-output skew is primarily a function of the number of outputs switching and the capacitive loading on those outputs See Figures 5 and 6 for the switching time variations

Switching Characteristics VCC 70 C all outputs loaded with specified load capacitance and all eight outputs switching simultaneously (Note 3 )

Symbol tPLH tPHL tPLZ tPHZ tPZL tPZH tSKEW Parameter Propagation Delay from LOW-to-HIGH Output Propagation Delay from HIGH-to-LOW Output Disable Time from LOW Output Disable Time from HIGH Output Enable Time to LOW Output Enable Time to HIGH Output-to-Output Skew (Note 4) Conditions Min Typ Max Units ns

e 1 MHz VCC g 10% (Note 3 ) Parameter CIN COUT Conditions All Other Inputs Tied Low Output in TRI-STATE Mode Typ 6 20 Units pF

Note 1 ``Absolute Maximum Ratings'' are those values beyond which the safety of the device cannot be guaranteed Except for ``Operating Temperature Range'' they are not meant to imply that the devices should be operated at these limits The table of ``Electrical Characteristics'' provides conditions for actual device operation Note 2 All currents into device pins shown as positive all currents out of device pins shown as negative all voltages referenced to ground unless otherwise noted All values shown as max or min are on an absolute value basis Note 3 Typical characteristics are taken at VCC 5 0V and 25 C Note 4 The output-to-output skew is primarily a function of the number of outputs switching and the capacitive loading on those outputs See Figures 5 and 6 for the switching time variations


 

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