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74LVCH244A Scheda tecnica(PDF) 1 Page - NXP Semiconductors

Il numero della parte 74LVCH244A
Spiegazioni elettronici  Octal buffer/line driver; 3-state
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Produttore elettronici  NXP [NXP Semiconductors]
Homepage  http://www.nxp.com
Logo NXP - NXP Semiconductors

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1.
General description
The 74LVC244A; 74LVCH244A 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.
Inputs can be driven from either 3.3 V or 5.0 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 V and 5 V environment.
The 74LVCH244A bus hold on data inputs eliminates the need for external pull-up
resistors to hold unused inputs.
2.
Features and benefits
5 V tolerant inputs/outputs for interfacing with 5 V logic
Wide supply voltage range from 1.2 V to 3.6 V
CMOS low-power consumption
Direct interface with TTL levels
Inputs accept voltages up to 5.5 V
High-impedance when VCC = 0 V
Bus hold on all data inputs (74LVCH244A only)
Complies with JEDEC standard:
JESD8-7A (1.65 V to 1.95 V)
JESD8-5A (2.3 V to 2.7 V)
JESD8-C/JESD36 (2.7 V to 3.6 V)
ESD protection:
HBM JESD22-A114F exceeds 2000 V
MM JESD22-A115B exceeds 200 V
CDM JESD22-C101E exceeds 1000 V
Specified from
40 C to +85 C and 40 C to +125 C
74LVC244A; 74LVCH244A
Octal buffer/line driver; 3-state
Rev. 8 — 26 June 2013
Product data sheet


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