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74VCXH16245
Low-Voltage 1.8/2.5/3.3V 16-Bit Transceiver
1/11July 2003 3.6V TOLERANT INPUTS AND OUTPUTS HIGH SPEED:
tPD= 2.5ns (MAX.)at VCC =3.0to 3.6VPD= 3.2ns (MAX.)atVCC =2.3to 2.7V POWER DOWN PROTECTION ON INPUTS
AND OUTPUTS SYMMETRICAL OUTPUT IMPEDANCE:
|IOH|= IOL= 24mA (MIN)at VCC =3.0VOH|=IOL= 18mA (MIN)atVCC =2.3V OPERATING VOLTAGE RANGE:
VCC(OPR)= 1.8Vto 3.6V PIN AND FUNCTION COMPATIBLE WITH SERIES H16245 BUS HOLDPROVIDEDONBOTH SIDES LATCH-UP PERFORMANCE EXCEEDS
300mA (JESD 17) ESD PERFORMANCE:
HBM> 2000V (MIL STD 883 method 3015);> 200V
DESCRIPTIONThe 74VCXH16245isa low voltage CMOS16 BIT
BUS TRANSCEIVER (3-STATE) fabricated with
sub-micron silicon gate and five-layer metal wiring2 MOS technology.Itis ideal for low power and
very high speed 2.3to 3.6V applications;it canbe
interfacedto 3.6V signal environment for both
inputs and outputs.
This ICis intended for two-way asynchronous
communication between data buses; the direction data transmissionis determinedby DIR input.
The two enable inputs nG can beusedtodisable
the device so that the buses are effectively
isolated.
Bus hold on data inputsis providedin orderto
eliminate the need for external pull-up or
pull-down resistor.
All inputs and outputs are equipped with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
All floating bus terminals during HighZ State must held HIGHor LOW.
74VCXH16245LOW VOLTAGE CMOS 16-BIT BUS TRANSCEIVER
(3-STATE) WITH 3.6V TOLERANT INPUTS AND OUTPUTS
ORDER CODES
PIN CONNECTION
74VCXH162452/11
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
TRUTH TABLE: Don‘t Care: High Impedance
IEC LOGIC SYMBOLS
74VCXH162453/11
ABSOLUTE MAXIMUM RATINGSAbsoluteMaximum Ratingsare those values beyond which damagetothe device mayoccur.Functional operation under these conditionsis
not impliedIO absolute maximum rating mustbe observedVO
VCC
RECOMMENDED OPERATING CONDITIONSVIN from 0.8Vto2Vat VCC =3.0V
74VCXH16245
4/11 SPECIFICATIONS (2.7V74VCXH16245
5/11 SPECIFICATIONS (2.3V
DYNAMIC SWITCHING CHARACTERISTICS (Ta= 25°C, Inputtr =tf =2.0ns,CL= 30pF,RL= 500Ω) Numberof outputs definedas"n". Measured with "n-1" outputs switching from HIGHto LOWor LOWto HIGH. The remaining outputis
measuredinthe LOW state. Numberof outputs definedas"n". Measured with "n-1" outputs switching from HIGHto LOWor LOWto HIGH. The remaining outputis
measuredinthe HIGH state. Parameters guaranteedby design.
74VCXH16245
6/11 ELECTRICAL CHARACTERISTICS(CL= 30pF,RL =500Ω, Inputtr=tf= 2.0ns) Skewis defined astheabsolute value ofthedifference betweenthe actual propagation delayfor anytwo outputsofthe samedevice switch-
inginthe same direction, either HIGHor LOW (tOSLH =|tPLHm -tPLHn|, tOSHL =|tPHLm -tPHLn|) Parameter guaranteedby design
CAPACITIVE CHARACTERISTICS CPD isdefinedasthe valueofthe IC’s internal equivalent capacitance whichis calculatedfrom theoperating current consumption without
load. (Referto Test Circuit). Average operating currentcanbe obtainedbythe following equation. ICC(opr) =CPD xVCC xfIN +ICC/16 (per
circuit)
