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M74HCT244TTR

P1-P3P4-P6P7-P9
M74HCT244
4/9
CAPACITIVE CHARACTERISTICS
1) C
PD
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
CC(opr)
= C
PD
x V
CC
x f
IN
+ I
CC
/8 (per circuit)
TEST CIRCUIT
C
L
= 50pF/150pF or equivalent (includes jig and probe capacitance)
R
1
= 1KΩ or equivalent
R
T
= Z
OUT
of pulse generator (typically 50Ω)
Symbol Parameter
Test Condition Value
Unit
V
CC
(V)
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
C
IN
Input Capacitance
5101010pF
C
OUT
Output
Capacitance
10 pF
C
PD
Power Dissipation
Capacitance (note
1)
31 pF
TEST SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
V
CC
t
PZH
, t
PHZ
GND
Obsolete Product(s) - Obsolete Product(s)
M74HCT244
5/9
WAVEFORM 1: PROPAGATION DELAY TIMES (f=1MHz; 50% duty cycle)
WAVEFORM 2 :OUTPUT AND ENABLE TIMES (f=1MHz; 50% duty cycle)
Obsolete Product(s) - Obsolete Product(s)
M74HCT244
6/9
DIM.
mm. inch
MIN. TYP MAX. MIN. TYP. MAX.
a1 0.254 0.010
B 1.39 1.65 0.055 0.065
b 0.45 0.018
b1 0.25 0.010
D 25.4 1.000
E 8.5 0.335
e 2.54 0.100
e3 22.86 0.900
F 7.1 0.280
I 3.93 0.155
L 3.3 0.130
Z 1.34 0.053
Plastic DIP-20 (0.25) MECHANICAL DATA
P001J
Obsolete Product(s) - Obsolete Product(s)
P1-P3P4-P6P7-P9

M74HCT244TTR

Mfr. #:
Buy M74HCT244TTR
Manufacturer:
STMicroelectronics
Description:
Buffers & Line Drivers Octal Bus Buffer
Lifecycle:
New from this manufacturer.
Delivery:
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