21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
Product Features
• Near-zero propagation delay
• 5 Ohm switches connect inputs to outputs
• Direct bus connection when switches are ON
• Ultra-low quiescent power (0.2mA typical)
– Ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packages available:
– 56-pin 240-mil wide thin plastic TSSOP (A)
– 56-pin 300-mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor’s PI3C series of bus switch circuits are
produced using the Company’s advanced submicron CMOS
technology.
The PI3C16211 is a 24-bit bus switch designed with a low ON
resistance allowing inputs to be connected directly to outputs. This
device operates as a 24-bit or a 12-bit bus switch, which provides
high speed bus switching.
Product Pin Configuration
NC
Logic Block Diagram
1A1
1B1
1A1
1A2
1A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
1OE
2OE
1B1
1B2
1B3
1B4
1B5
GND
1B6
1B7
1B8
1B9
1 B 10
1 B 11
1 B 12
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2 B 10
2 B 11
2 B 12
1A12
1B12
1A4
1A5
1A6
GND
1A7
1A8
1OE
2A1
2B1
1A9
1 A 10
1 A 11
1 A 12
56-Pin
A,V
2A12
2B12
2A1
2A2
V
CC
2A3
GND
2OE
2A4
2A5
2A6
Truth Table
1OE
L
L
H
H
2OE
L
H
L
H
1
A,
1
B
2A7
I/Os
2
A,
2
B
I/Os
2A8
2A9
1
A =
1
B
1
A =
1
B
2
A =
2
B
2 A 10
2 A 11
2 A 12
Z
2
A =
2
B
Z
Z
Z
Product Pin Description
Pin Name
S0-S2
xAx
xB
x
I/O
I
I/O
I/O
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
Description
Select Inputs
Bus A
Bus B
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
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 (Inputs & V
CC
Only) ............–0.5V to +4.6V
Supply Voltage to Ground Potential (Outputs & D/O Only) .......... –0.5V to +4.6V
DC I/O Voltage .............................................................................–0.5V to +5.5V
DC Output Current ................................................................................. 120 mA
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, T
A
= –40°C to +85°C, V
CC
= 3.3V ±10%)
Parame te rs
V
IH
V
IL
I
IH
I
IL
I
O Z(3 )
V
IK
De s cription
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High- Impedence Output Current
Clamp diode Voltage
Te s t Conditions
(1 )
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
C C
= Max., V
IN
= V
C C
V
C C
= Max., V
IN
0
≤
A, B
≤
V
C C
V
C C
= Min., I
IN
= –18mA
V
C C
= Min.,V
IN
= 0.0V
I
O N
= 48mA or 64mA
V
C C
= Min.,V
IN
= 2.4V
I
O N
= 15mA
=
M in.
2.0
–0.5
—
—
—
—
—
—
Typ.
(2 )
—
—
—
—
—
–0.73
6.5
10
M ax.
—
Units
V
0.8
±1
±1
±1
–1.2
8.5
Ω
15
V
µA
GND
R
O N
Switch On Resistance
(4 )
Capacitance
(T
A
= 25°C f = 1 MHz)
Parame te rs
(5)
C
IN
C
O FF
C
ON
De s cription
Input Capacitance
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
V
IN
= 0V
Te s t Conditions
Typ.
3.5
4.0
8.0
pF
Units
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at V
CC
= 3.3V, T
A
= 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.
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
Power Supply Characteristics
Parame te rs
I
CC
DI
CC
Notes:
De s cription
Quiescent Power Supply Current
Supply Current per Input @ TTL HIGH
Te s t Conditions
(1)
V
CC
= Max.
V
IN
= GND or V
CC
V
CC
= Max.
V
IN
= 3.0V
(3)
M in.
—
—
Typ.
(2)
260
—
M ax.
850
Units
µA
750
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at V
CC
= 3.3V, +25°C ambient.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to I
CC
.
PI3C16211 Switching Characteristics Over Operating Range
PI3C16211
Com
Parame te rs
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
De s cription
Propagation Delay
(2,3)
A
X
to B
X
, B
X
to A
X
Bus Enable Time
nOE to A
X
or B
X
Bus Disable Time
nOE to A
X
or B
X
Conditions
(1)
C
L
= 50pF
R
L
= 500
Ω
C
L
= 50pF
R
L
= 500
Ω
R = 500
Ω
M in.
—
1. 5
1.5
M ax.
0.25
6.5
5.5
ns
Units
Notes:
1. See test circuit and waveforms.
2. This parameter is guaranteed but not tested on Propagation Delays.
3. The bus switch contributes no propagational delay other than the RC delay of the ON resistance of the
switch and the load capacitance. The time constant for the switch alone is of the order of 0.25ns for 50pF
load. Since this time constant is much smaller than the rise/fall times of typical driving signals, it adds very
little propagational delay to the system. Propagational delay of the bus switch when used in a system is
determined by the driving circuit on the driving side of the switch and its interaction with the load on the
driven side.
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21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
56-Pin TSSOP (A) Package
56
.236
.244
6.0
6.2
1
.547
.555
13.9
14.1
1.20
.047
Max.
SEATING PLANE
.004 0.09
.008 0.20
0.45 .018
0.75 .030
.319 BSC
8.1
.0197
BSC
0.50
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.007
.011
0.17
0.27
.002
.006
0.05
0.15
56-Pin SSOP (V) Package
56
.291
.299
7.39
7.59
.396
.416
10.06
10.56
Gauge Plane
.010 0.25
.02
.04
0.51
1.01
1
.720 18.29
.730 18.54
.015 0.381 x 45˚
.025 0.635
.008
0.20
Nom.
.110 2.79
Max
.025 BSC
0.635
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.008
.0135
0.20
0.34
.008 0.20
.016 0.40
0-8˚
Ordering Information
Part
PI3C16211A
PI3C16211V
Pin - Package
56 - TSSOP (A)
56 - SSOP (V)
Width
240- mil
0°C to 85°C
300- mil
Te mpe rature
Applications Information
Logic Inputs
The logic control inputs can be driven up to +3.6V regardless of the
supply voltage. For example, given a +3.3V supply, IN may be driven
low to 0V and high to 3.6V. Driving IN Rail-to-Rail
®
minimizes power
consumption.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply V
CC
before applying V
BIAS
and signals to
input/output or control pins.
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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PS8456C
05/29/01
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