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74VHCT244AMTR

P1-P3P4-P6P7-P9
74VHCT244A
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 gate)
DYNAMIC SWITCHING CHARACTERISTICS
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 3.0V, (n-1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to 3.0V. Inputs under test switching: 3.0V to threshold (V
ILD
), 0V to threshold
(V
IHD
), f=1MHz.
Symbol Parameter
Test Condition Value
Unit
T
A
= 25°C
-40 to 85°C -55 to 125°C
Min. Typ. Max. Min. Max. Min. Max.
C
IN
Input Capacitance
6101010pF
C
OUT
Output
Capacitance
10 pF
C
PD
Power Dissipation
Capacitance
(note 1)
18 pF
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.
V
OLP
Dynamic Low
Voltage Quiet
Output (note 1, 2)
5.0
C
L
= 50 pF
0.9 1.1
V
V
OLV
-1.1 -0.9
V
IHD
Dynamic High
Voltage Input
(note 1, 3)
5.0 2.0
V
ILD
Dynamic Low
Voltage Input
(note 1, 3)
5.0 0.8
74VHCT244A
5/9
TEST CIRCUIT
C
L
=15/ 50pF or equivalent (includes jig and probe capacitance)
R
L
= R
1
= 1KΩ or equivalent
R
T
= Z
OUT
of pulse generator (typically 50Ω)
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
TEST SWITCH
t
PLH
, t
PHL
Open
t
PZL
, t
PLZ
V
CC
t
PZH
, t
PHZ
GND
74VHCT244A
6/9
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
P1-P3P4-P6P7-P9

74VHCT244AMTR

Mfr. #:
Buy 74VHCT244AMTR
Manufacturer:
STMicroelectronics
Description:
IC BUFFER NON-INVERT 5.5V 20SOP
Lifecycle:
New from this manufacturer.
Delivery:
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