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Pericom Semiconductor Corporation

PI3B3257 Datasheet Preview

PI3B3257 Datasheet

Quad 2:1 Mux/Demux Bus Switch

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PI3B32571122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
3.3V, Quad 2:1
Mux/Demux Bus Switch
Product Features
• Near zero propagation delay
• 5-ohm switches connect inputs to outputs
• Fast Switching Speed: 4.8ns max.
• Ultra-Low Quiescent Power: 0.1µA typical
– Ideally suited for notebook applications
• Pin compatible with 74 series 257 logic devices
• Packages available:
– 16-pin 150 mil wide plastic QSOP (Q)
– 16-pin 150 mil wide plastic SOIC (W)
– 16-pin 173 mil wide plastic TSSOP (L)
Product Description
Pericom Semiconductor’s PI3B series of logic circuits are produced
using the Company’s advanced submicron CMOS technology,
achieving industry leading performance.
The PI3B3257 is a 3.3 Volt, Quad 2:1 multiplexer/demultiplexer with
three-state outputs that is pinout and function compatible with the
PI74FCT257T, 74F257, and 74ALS/AS/LS257. Inputs can be
connected to outputs with low ON resistance (5 ohms) with no
additional ground bounce noise or propagation delay.
Logic Block Diagram
IA0 IA1 IB0 IB1 IC0 IC1 ID0 ID1
E
S
16-Pin Product Configuration
S
IA0
IA1
YA
IB0
IB1
YB
GND
1 16
2 15
3 14
4
16-Pin
Q, W, L
13
5 12
6 11
7 10
89
VCC
E
ID0
ID1
YD
IC0
IC1
YC
YA YB YC YD
Truth Table(1)
E S YA YB YC YD Function
H X Hi-Z Hi-Z Hi-Z Hi-Z Disable
L
L IA0 IB0 IC0 ID0
S=0
L
H IA1 IB1 IC1 ID1
S=1
Note: 1. H = High Voltage Level
L = Low Voltage Level
Product Pin Description
Pin Name
IAn-IDn
S
E
YA-YD
GND
Vcc
NC
1
Description
Data Inputs
Select Inputs
Enable
Data Outputs
Ground
Power
No Connect
PS8151F 05/07/01




Pericom Semiconductor Corporation

PI3B3257 Datasheet Preview

PI3B3257 Datasheet

Quad 2:1 Mux/Demux Bus Switch

No Preview Available !

PI3B3257
3.3V, Quad 2:1
Mux/Demux Bus Switch1122334455667788990011223344556677889900112233445566778899001122112233445566778899001122334455667788990011223344556677889900112211223344556677889900112233445566778899001122334455667788990011221122334455667788990011223344556677889900112233445566778899001122112233445566778899001122
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Storage Temperature ..................................................................... –65°C to +150°C
Ambient Temperature with Power Applied ..................................... –40°C to +85°C
Supply Voltage to Ground Potential ................................................. –0.5Vto+4.6V
DC Input Voltage .............................................................................. –0.5Vto+4.6V
DC Output Current ....................................................................................... 120mA
Power Dissipation ............................................................................................ 0.5W
Note:
Stresses greater than those listed under MAXIMUM RATINGS 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 sections of this
specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect reliability.
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC =3.3V ±10%)
Parameters
Description
Test Conditions(1)
Min.
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 Input LOW Current
VCC = Max., VIN = GND
IOZH High Impedance Output Current 0 IN, YN VCC
VIK Clamp Diode Voltage
RON Switch ON Resistance(3)
VCC = Min., IIN = –18mA
VCC = Min., VIN = 0.0V, ION = 48mA or 64mA
VCC = Min., VIN = 2.4V, ION = 15mA
Typ.(2)
5
10
Max.
0.8
±1
±1
±1
–1.2
8
17
Units
V
µA
V
Capacitance (TA = 25°C, f = 1 MHz)
Parameters
Description
Test Conditions
Typical
Units
CIN Input Capacitance
VIN =0V
3.0
COFFYN
COFFIN
YN Capacitance, Switch Off
IN Capacitance, Switch Off
VIN =0V
VIN =0V
17.0
pF
8.5
CON IN/YN Capacitance, Switch On
VIN =0V
25.0
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. Measured by the voltage drop between I and Y pin at indicated current through the switch. ON resistance is determined by the
lower of the voltages on the two (I,Y) pins.
4. This parameter is determined by device characterization but is not production tested.
2 PS8151F 05/07/01


Part Number PI3B3257
Description Quad 2:1 Mux/Demux Bus Switch
Maker Pericom Semiconductor Corporation
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PI3B3257 Datasheet PDF






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