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74VHCT245A Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce 74VHCT245A
Description  OCTAL BUS TRANSCEIVER (3-STATE)
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHCT245A Fiches technique(HTML) 1 Page - STMicroelectronics

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December 2004
s
HIGH SPEED: tPD = 4.5 ns (TYP.) at VCC = 5V
s
LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s
COMPATIBLE WITH TTL OUTPUTS:
VIH = 2V (MIN.), VIL = 0.8V (MAX)
s
POWER DOWN PROTECTION ON INPUTS
& OUTPUTS
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCC(OPR) = 4.5V to 5.5V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 245
s
IMPROVED LATCH-UP IMMUNITY
s
LOW NOISE: VOLP = 0.9V (MAX.)
DESCRIPTION
The 74VHCT245A is an advanced high-speed
CMOS OCTAL BUS TRANSCEIVER (3-STATE)
fabricated
with
sub-micron silicon gate and
double-layer metal wiring C2MOS technology.
This IC is intended for two-way asynchronous
communication
between
data
busses;
the
direction of data transmission is determined by
DIR input. The enable input G can be used to
disable the device so that the busses are
effectively isolated.
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 High Z State must
be held HIGH or LOW.
74VHCT245A
OCTAL BUS
TRANSCEIVER (3-STATE)
Figure 1: Pin Connection And IEC Logic Symbols
Table 1: Order Codes
PACKAGE
T & R
SOP
74VHCT245AMTR
TSSOP
74VHCT245ATTR
TSSOP
SOP
Rev. 4


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