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Pericom Semiconductor Corporation

PI3VT3245QE Datasheet Preview

PI3VT3245QE Datasheet

8-Bit/ 2-Port/ Low Voltage Translator Bus SWITCH

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Features
• Near-Zero propagation delay
• Low On-Resistance switches connect inputs to outputs
• 2.5V to 3.3V Supply voltage operation
• 2.5V or 1.8V switching
• Packaging (Pb-free & Green available):
– 20-pin, 150-mil wide plastic QSOP (Q)
– 20-pin, 173-mil wide plastic TSSOP (L)
Applications
• 3.3V to 2.5V level shifting (voltage translation)
• 2.5V to 1.8V level shifting (voltage translation)
Block Diagram
A0 B0
A7 B7
BE
PI3VT3245
8-Bit, 2-Port, Low Voltage
Translator Bus Switch
Description
Pericom Semiconductor’s PI3VTseries of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3VT3245 is a 2.5V or 3.3V 8-bit, 2-port bus switch
designed with a low On-Resistance (5Ω). The switches are turned
ON or enabled by the Bus Enable (BE) input signal.
Given a 3.3V supply and an input voltage of 3.3V, the switch
translates to an output voltage of 2.5V. Similarly, when operated
with a 2.5V supply and given 2.5V inputs, the device translates
the outputs to 1.8V.
Pin Configuration
NC
A0
A1
A2
A3
A4
A5
A6
A7
GND
1
2
3
4
5
6
7
8
9
10
20 VCC
19 BE
18 B0
17 B1
16 B2
15 B3
14 B4
13 B5
12 B6
11 B7
Truth Table(1)
Function
Disconnect
Connect
Notes:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
BE
H
L
A0-7
Hi-Z
B0-7
Pin Description
Pin Name
Description
BE Bus Enable Input (Active Low)
A0-A7
Bus A
B0-B7
Bus B
VCC Power
GND
Ground
1
PS8530B
08/13/04




Pericom Semiconductor Corporation

PI3VT3245QE Datasheet Preview

PI3VT3245QE Datasheet

8-Bit/ 2-Port/ Low Voltage Translator Bus SWITCH

No Preview Available !

PI3VT3245
8-Bit, 2-Port, Low Voltage
Translator Bus Switch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Storage Temperature ......................................................... –65°C to +150°C StressesgreaterthanthoselistedunderMAXIMUMRATINGS
Ambient Temperature with Power Applied ........................ –40°C to +85°C
Supply Voltage to Ground Potential..................................... –0.5V to +4.6V
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 indicated in the operational sec-
DC Input Voltage ................................................................. –0.5V to +5.5V
DC Output Current............................................................................ 120mA
tions of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
reliability.
Power Dissipation ................................................................................ 0.5W
DC Electrical Characteristics (Over Operating Range, TA = –40°C to +85°C, VCC = 3.3V ±10%)
Parameters
Description
Test Conditions(1)
Min. Typ.(2)
VIH
Input HIGH Voltage
Guaranteed logic HIGH level
2.0
VIL
Input LOW Voltage
Guaranteed logic LOW level
-0.5
IIH
Input HIGH Current
VCC = Max., VIN = VCC
IIL
IOZH
Input LOW Current
High Impedance Output
Current
VCC = Max., VIN = GND
0 ≤ A, B ≤ VCC
VCC = Min, VIN = 0V, ION = -8mA
5
RON
Switch On-Resistance
VCC = Min., VIN = 1.7V, ION = -8mA
VCC = 2.3V., VIN = 0V, ION = -8mA
15
6
VCC = 2.3V., VIN = 1.3V, ION = -8mA
25
Vp Pass Voltage
VIN = VCC = 3.3V, IOUT = -5µA
VIN = VCC = 2.5V, IOUT = -5µA
2.3 2.5
1.8
Max.
VCC +0.3V
0.8
±1
±1
±1
8
22
9
30
2.9
Units
V
µA
V
Capacitance (TA = 25°C, f = 1 MHz)
Parameters(5)
Description
Test Conditions
Typ.
CIN Input Capacitance
3.5
COFF
A/B Capacitance, Switch Off
VIN = 0V
5.0
CON A/B Capacitance, Switch On
11.2
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 3.3V, TA = 25°C ambient and maximum loading.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Measured by the voltage drop between A and B pin at indicated current through the switch. On-Resistance is determined
by the lower of the voltages on the two (A,B) pins.
5. This parameter is determined by device characterization but is not production tested.
Units
pF
2
PS8530B
08/13/04


Part Number PI3VT3245QE
Description 8-Bit/ 2-Port/ Low Voltage Translator Bus SWITCH
Maker Pericom Semiconductor Corporation
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