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74VHCT240ATTR

P1-P3P4-P6P7-P9P10-P12
74VHCT240A
4/12
Table 8: 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)
Table 9: 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
610 10 10pF
C
OUT
Output
Capacitance
9pF
C
PD
Power Dissipation
Capacitance
(note 1)
19 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
Obsolete Product(s) - Obsolete Product(s)
74VHCT240A
5/12
Figure 3: 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)
Figure 4: Waveform - 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
Obsolete Product(s) - Obsolete Product(s)
74VHCT240A
6/12
Figure 5: Waveform - Output Enable And Disable Time (f=1MHz; 50% duty cycle)
Obsolete Product(s) - Obsolete Product(s)
P1-P3P4-P6P7-P9P10-P12

74VHCT240ATTR

Mfr. #:
Buy 74VHCT240ATTR
Manufacturer:
STMicroelectronics
Description:
Buffers & Line Drivers Octal Bus Buffer
Lifecycle:
New from this manufacturer.
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