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74VHC244 Fiches technique(PDF) 1 Page - STMicroelectronics

No de pièce 74VHC244
Description  OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NON INVERTED)
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

74VHC244 Fiches technique(HTML) 1 Page - STMicroelectronics

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November 2004
s
HIGH SPEED: tPD = 3.9 ns (TYP.) at VCC = 5V
s
LOW POWER DISSIPATION:
ICC = 4 µA (MAX.) at TA=25°C
s
HIGH NOISE IMMUNITY:
VNIH = VNIL = 28% VCC (MIN.)
s
POWER DOWN PROTECTION ON INPUTS
s
SYMMETRICAL OUTPUT IMPEDANCE:
|IOH| = IOL = 8 mA (MIN)
s
BALANCED PROPAGATION DELAYS:
tPLH tPHL
s
OPERATING VOLTAGE RANGE:
VCC(OPR) = 2V to 5.5V
s
PIN AND FUNCTION COMPATIBLE WITH
74 SERIES 244
s
IMPROVED LATCH-UP IMMUNITY
s
LOW NOISE: VOLP = 0.9V (MAX.)
DESCRIPTION
The 74VHC244 is an advanced high-speed
CMOS
OCTAL
BUS
BUFFER
(3-STATE)
fabricated
with
sub-micron silicon gate and
double-layer metal wiring C2MOS technology.
G output enable governs four BUS BUFFERs.
This device is designed to be used with 3 state
memory address drivers, etc.
Power down protection is provided on all inputs
and 0 to 7V can be accepted on inputs with no
regard to the supply voltage. This device can be
used to interface 5V to 3V.
All
inputs
and
outputs
are
equipped
with
protection circuits against static discharge, giving
them 2KV ESD immunity and transient excess
voltage.
74VHC244
OCTAL BUS BUFFER
WITH 3 STATE OUTPUTS (NON INVERTED)
Figure 1: Pin Connection And IEC Logic Symbols
Table 1: Order Codes
PACKAGE
T & R
SOP
74VHC244MTR
TSSOP
74VHC244TTR
TSSOP
SOP
Rev. 3


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