
5
PS8729F
10/11/08
PI74STX2G4245
2-Bit Level Shifting Buffer/Transceiver with
Congurable Dual Supply Voltage
Switching Characteristics for VDDA = 1.8V ± 0.15V
(Over recommended operating free-air temperature range, see gure 1)
Parameter
From
(Input)
To
(Output)
VDDB = 2.5V ±0.2V
VDDB = 3.3V ±0.3V
Units
Min.
Max.
Min.
Max.
tPHL
AB
1.0
8
1.0
8
ns
tPLH
1.0
8
1.0
8
tPHL
BA
1.0
7
1.0
7
tPLH
1.0
7
1.0
7
tSK(O)
1.5
1
Switching Characteristics for VDDA = 2.5V ± 0.2V
(Over recommended operating free-air temperature range, see gure 1)
Parameter
From
(Input)
To
(Output)
VDDB = 2.5V ±0.2V
VDDB = 3.3V ±0.3V
VDDB = 5V ±0.5V
Units
Min.
Max.
Min.
Max.
Min.
Max.
tPHL
AB
1.0
7
1.0
6.5
1.0
6
ns
tPLH
1.0
7
1.0
6.5
1.0
6
tPHL
BA
1.0
6
1.0
6
1.0
5
tPLH
1.0
6
1.0
6
1.0
5
tSK(O)
1.5
1
Switching Characteristics for VDDA = 3.3V ± 0.3V
(Over recommended operating free-air temperature range, see gure 1)
Parameter
From
(Input)
To
(Output)
VDDB = 3.3V ±0.3V
VDDB = 5V ±0.5V
Units
Min.
Max.
Min.
Max.
tPHL
AB
1.0
5
1.0
5
ns
tPLH
1.0
5
1.0
5
tPHL
BA
1.0
5
1.0
5
tPLH
1.0
5
1.0
5
tSK(O)
11
08-0291