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M74HC244 Datasheet

  • M74HC244

  • OCTAL BUS BUFFER WITH 3 STATE OUTPUTS (NOT INVERTED)

  • STMicroelectronics   STMicroelectronics

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M54HC240/241/244
M74HC240/241/244
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
HC240: INVERTED - HC241/244 NON INVERTED
.
.
.
.
.
.
.
.
HIGH SPEED
t
PD
= 10 ns (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION
o
I
CC
= 4
碌A(chǔ)
(MAX.) at T
A
= 25 C
HIGH NOISE IMMUNITY
V
NIH
= V
INL
= 28 % V
CC
(MIN.)
OUTPUT DRIVE CAPABILITY
15 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
| = I
OL
= 6 mA (MIN)
BALANCED PROPAGATION DELAYS
t
PLH
= t
PHL
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2V to 6V
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS240/241/244
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCXXXF1R
M74HCXXXM1R
M74HCXXXB1R
M74HCXXXC1R
DESCRIPTION
The M54/74HC240, HC241 and HC244 are high
speed CMOS OCTAL BUS BUFFERs fabricated in
silicon gate C
2
MOS technology.
They have the same high speed performance of
LSTTL combined with true CMOS low power
consumption.
The designer has a choise of select combination of
inverting and non-inverting outputs, symmetrical G
(active low output
control) input, and
PIN CONNECTION
(top view)
HC240
HC241
HC244
complementary G and G inputs. Each control input
governs four BUS BUFFERs.
These devices are designed to be used with 3 state
memory address drivers, etc. All inputs are
equipped with protection circuits against static
discharge and transient excess voltage.
October 1993
1/12

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