M54HC7240/7241/7244
M74HC7240/7241/7244
OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
HC7240: INVERTED - HC7241/7244 NON INVERTED
.
.
.
.
.
.
.
.
HIGH SPEED
t
PD
= 15 ns (TYP.) at V
CC
= 5V
LOW POWER DISSIPATION
o
I
CC
= 4
µA
(MAX.) at T
A
= 25 C
HIGH NOISE IMMUNITY
V
H
= 1.1 V(TYP.) at V
CC
= 5V
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 :
M54HCXXXXF1R
M74HCXXXXM1R
M74HCXXXXB1R
M74HCXXXXC1R
DESCRIPTION
The M54/74HC7240, HC7241 and HC7244 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
complementary G and G inputs. Each control input
PIN CONNECTION
(top view)
HC7240
HC7241
HC7244
governs four BUS BUFFERs.
The HC7240, HC7241 and HC7244 have the same
pin configuration and function as the HC240, HC241
and HC244 and they have a hysteresis
characteristics with each input so can be used as a
line receiver, etc.
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
October 1993
1/12
M54/M74HC7240/7241/7244
ABSOLUTE MAXIMUM RATINGS
Symbol
V
CC
V
I
V
O
I
IK
I
OK
I
O
I
CC
or I
GND
P
D
T
stg
T
L
Supply Voltage
DC Input Voltage
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Source Sink Current Per Output Pin
DC V
CC
or Ground Current
Power Dissipation
Storage Temperature
Lead Temperature (10 sec)
Parameter
Value
-0.5 to +7
-0.5 to V
CC
+ 0.5
-0.5 to V
CC
+ 0.5
±
20
±
20
±
35
±
70
500 (*)
-65 to +150
300
Unit
V
V
V
mA
mA
mA
mA
mW
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW:
≅
65
o
C derate to 300 mW by 10mW/
o
C: 65
o
C to 85
o
C
RECOMMENDED OPERATING CONDITIONS
Symbol
V
CC
V
I
V
O
T
op
Parameter
Supply Voltage
Input Voltage
Output Voltage
Operating Temperature:
M54HC
Series
M74HC
Series
Value
2 to 6
0 to V
CC
0 to V
CC
-55 to +125
-40 to +85
Unit
V
V
V
C
o
C
o
4/12
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