HD74LVC541A
Switching Characteristics
Ta = –40 to 85°C
Item
Symbol VCC (V) Min
Typ
Max
Propagation delay time tPLH
2.7
—
—
7.5
tPHL
3.3±0.3 1.5
—
6.5
5.0±0.5 —
—
5.0
Output enable time
tZH
2.7
—
—
9.5
tZL
3.3±0.3 1.5
—
8.5
5.0±0.5 —
—
7.0
Output disable time
tHZ
2.7
—
—
8.5
tLZ
3.3±0.3 1.5
—
7.5
5.0±0.5 —
—
6.5
Between output
pins skew *1
tOSLH
2.7
—
—
—
tOSHL
3.3±0.3 —
—
1.0
5.0±0.5 —
—
1.0
Input capacitance
CIN
2.7
—
3.0
—
Output capacitance
CO
2.7
—
15.0
—
Note: 1. This parameter is characterized but not tested.
tosLH = | tPLHm - tPLHn|, tosHL = | tPHLm - tPHLn|
Unit
ns
ns
ns
ns
pF
pF
Test Circuit
VCC
VCC
G1
Input
Output
From
(Input)
A
To
(Output)
Y
G1 or G2 Y
G1 or G2 Y
Pulse generator
Zout = 50 Ω
A1 Y1
500 Ω S1
CL =
450 Ω
50 pF 50 Ω Scope
OPEN
*1 See under table
GND
Notes:
G2
Symbol
S1
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
tPLH / t PHL OPEN
OPEN
tZH/ t HZ
GND
GND
tZL / t LZ
6V
2×Vcc
1. CL includes probe and jig capacitance.
2. A2-Y2 to A8-Y8 are identical to above load circuit.
Rev.5.00 Jul. 28, 2004 page 4 of 6