74VHC138 STMicroelectronics, 74VHC138 Datasheet - Page 4

• Manufacturer Part Number: 74VHC138
• Description: 3 TO 8 LINE DECODER INVERTING
• Manufacturer: STMicroelectronics

74VHC132
DYNAMIC SWITCHING CHARACTERISTICS
1) Worst case package.
2) Max number of outputs defined as (n). Data inputs are driven 0V to 5.0V, (n -1) outputs switching and one output at GND.
3) Max number of data inputs (n) switching. (n-1) switching 0V to5.0V. Inputs under test switching: 5.0V to threshold (V
TEST CIRCUIT
C
R
WAVEFORM: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
4/7
Symb ol
L
T
= 15/50 pF or equivalent (includes jig and probe capacitance)
= Z
V
V
V
V
OLP
OLV
IHD
ILD
OUT
of pulse generator (typically 50 )
Dynamic Low Voltage
Quiet Output (note 1, 2)
Dynamic High Voltage
Input (note 1, 3)
Dynamic Low Voltage
Input (note 1, 3)
Parameter
V
(V)
5.0
5.0
5.0
CC
T est Cond ition s
C
L
= 50 pF
Min.
-0.8
3.5
T
A
Typ .
= 25
-0.3
0.3
o
C
Value
Max.
0.8
1.5
ILD
), 0V to threshold (V
-40 to 85
Min .
Max.
o
C
IHD
), f=1MHz.
Un it
V