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74LVC2244A डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Octal buffer/line driver - NXP

भाग संख्या 74LVC2244A
समारोह Octal buffer/line driver
मैन्युफैक्चरर्स NXP 
लोगो NXP लोगो 
पूर्व दर्शन
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<?=74LVC2244A?> डेटा पत्रक पीडीएफ

74LVC2244A pdf
Philips Semiconductors
Octal buffer/line driver with 30 series termination
resistors; 5 V input/output tolerant; 3-state
Product specification
74LVC2244A
FEATURES
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range of 1.2 to 3.6 V
CMOS low power consumption
Direct interface with TTL levels
Integrated 30 termination resistors.
DESCRIPTION
The 74LVC2244A is a high-performance, low-power,
low-voltage, Si-gate CMOS device, superior to most
advanced CMOS compatible TTL families.
Inputs can be driven from either 3.3 or 5 V devices. In
3-state operation, outputs can handle 5 V. These features
allow the use of these devices as translators in a mixed
3.3/5 V environment.
The 74LVC2244A is an octal non-inverting buffer/line
driver with 3-state outputs. The 3-state outputs are
controlled by the output enable inputs 1OE and 2OE. A
HIGH on nOE causes the outputs to assume a
high-impedance OFF-state. Schmitt-trigger action at all
inputs makes the circuit highly tolerant for slower input rise
and fall times. The 74LVC2244A is designed with 30
series termination resistors in both HIGH and LOW output
stages to reduce line noise.
QUICK REFERENCE DATA
Ground = 0 V; Tamb = 25 °C; tr = tf 2.5 ns.
SYMBOL
tPHL/tPLH
CI
CPD
PARAMETER
propagation delay 1An to 1Yn; 2An to 2Yn
input capacitance
power dissipation capacitance per buffer
CONDITIONS
CL = 50 pF; VCC = 3.3 V
VI = GND to VCC; note 1
Note
1. CPD is used to determine the dynamic power dissipation (PD in µW).
PD = CPD × VCC2 × fi + Σ(CL × VCC2 × fo) where:
fi = input frequency in MHz;
fo = output frequency in MHz;
CL = output load capacitance in pF;
VCC = supply voltage in Volts;
Σ(CL × VCC2 × fo) = sum of the outputs.
TYPICAL
4.0
5.0
25
UNIT
ns
pF
pF
1999 Sep 30
2

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