2
PS8729F 10/11/08
PI74STX2G4245
2-Bit Level Shifting Buffer/Transceiver with
Confi gurable Dual Supply Voltage
Supply voltage range: V
DDA
............................. –0.5V to +6V
V
DDB
............................. –0.5V to +6V
Input Voltage Range, V
I:
Input A1
(1)
................... –0.5V to +6V
I/O A2
(1,2)
....... –0.5V to V
DDA
+0.5V
I/O B2
(1,2)
........–0.5V to V
DDB
+0.5V
Output Voltage Range, V
O
Output B1
(1,2)
...–0.5V to V
DDB
+0.5V
Notes:
Stresses greater than those listed under MAXIMUM RAT INGS may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other conditions above those in di cat ed in the operational sec tions of this spec i fi ca tion is not
im plied. Exposure to absolute maximum rating conditions for ex tend ed periods may affect reliability.
1. The input negative voltage and output voltage ratings may be exceeded if the input and output current ratings are observed.
2. This value is limited to 6V.
Maximum Ratings
(Absolute maximum ratings over operating free-air temperature range from V
DDB
at 2.5V & V
DDA
at 1.2V, unless otherwise noted)
DC Input Diode Current, I
IK
(V
O
<0) .......................... –50mA
DC Output Diode Current, I
OK
(V
O
<0) ....................... –50mA
DC Output Current, (I
OUT
) ........................................... ±50mA
DC V
CC
or GND Current (I
CC/
I
GND
) .......................... ±100mA
Storage temperature range, T
STG
.................... –65°C to 150°C
Junction Lead Temperature (I
OS
) ....................................260°C
Power Dissipation: MSOP............................................ 200mW
Recommended Operating Conditions for A Port ( V
DDA
)
(1)
Parameter Description Test Conditions
Min. Max. Units
V
DDA
Supply Voltage 1.65 3.6
V
V
IH
High-level input voltage
V
DDA
= 1.65V to 1.95V 0.7 x V
DDA
V
DDA
= 2.3V to 3.6V 0.7 x V
DDA
V
IL
Low-level input voltage
V
DDA
= 1.65 to 1.95V 0.3 x V
DDA
V
DDA
= 2.3V to 3.6V 0.3 x V
DDA
V
IA
Input Voltage 0 V
DDA
V
OA
Output Votage 0 V
DDA
I
OH
High-level Output Current
V
DDA
= 1.65 V to 1.95V -4
mA
V
DDA
= 2.3V to 2.7V -8
V
DDA
= 3V to 3.6V -12
I
OL
Low-level Output Current
V
DDA
= 1.65V to 1.95V 4
V
DDA
= 2.3V to 2.7V 8
V
DDA
= 3V to 3.6V 12
∆t/∆V Input transition rise or fall rate
V
DDA
= 1.65V to 1.95V 20
ns/V
V
DDA
= 2.3V to 3.6V 10
T
A
Operation free-air temperature -40 85 ºC
Notes:
1. To ensure proper device operation, all unused inputs must be held at V
DDA
or GND.
