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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)
Logic Block Diagram
1A1
1A12
1OE
2A1
2A12
2OE
Truth Table
EO1EO2
LL
LH
HL Z
1,A1
1=A1
1=A1
1B1
1B12
2B1
2B12
sO/IB
B
BZ
2,A2
2=A2
2=A2
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
1A1
1A2
1A3
1A4
1A5
1A6
GND
1A7
1A8
1A9
1A10
1A11
1A12
2A1
2A2
V
2A3
GND
2A4
2A5
2A6
2A7
sO/IB
B
2A8
2A9
2A10
2A11
2A12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
56-Pin
A,V
15
16
17
CC
18
19
20
21
22
23
24
25
26
27
28
B
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
1B10
1B11
1B12
2B1
2B2
2B3
GND
2B4
2B5
2B6
2B7
2B8
2B9
2B10
2B11
2B12
HH Z Z
Note: 1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
Product Pin Description
Pin Name I/O Description
S0-S2 I Select Inputs
xAx I/O Bus A
xBxI/OBus B
1
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Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
Storage Temperature...............................................................–65°C to +150°C
Ambient Temperature with Power Applied ................................. –40°C to +85°C
Supply Voltage to Ground Potential (Inputs & VCC 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
DC Electrical Characteristics (Over the Operating Range, T
= –40°C to +85°C, V
A
sretemaraPnoitpircseDsnoitidnoCtseT
V
HI
V
LI
I
HI
LI
)3(
I
ZO
V
KI
egatloVHGIHtupnIleveLHGIHcigoLdeetnarauG0.2 ——
egatloVWOLtupnIleveLWOLcigoLdeetnarauG5.0–—8.0
tnerruCHGIHtupnIV
tnerruCWOLtupnIV
CC
CC
tnerruCtuptuOecnedepmI-hgiH0≤ B,A ≤ V
egatloVedoidpmalCV
CC
V,.xaM=
V,.xaM=
I,.niM=
NI
NI=
CC
NI
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.
= 3.3V ±10%)
CC
)1(
V=
CC
.niM.pyT
—— 1±
)2(
.xaMstinU
DNG —— 1±
—— 1±
Am81–= — 37.0– 2.1– V
V
AµI
R
NO
Capacitance (T
C
NI
FFO
C
NO
= 25°C f = 1 MHz)
A
)5(
sretemaraP
V
CC
I
)4(
ecnatsiseRnOhctiwS
NO
V
CC
I
NO
noitpircseDsnoitidnoCtseT.pyTstinU
ecnaticapaCtupnI
V,.niM=
NI
V,.niM=
NI
Am51=
ffOhctiwS,ecnaticapaCB/A0.4
V0.0=
Am46roAm84=
V4.2=
V
V0=
NI
— 5.65.8
— 0151
nOhctiwS,ecnaticapaCB/A0.8
5.3
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.
Ω
FpC
2
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Power Supply Characteristics
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
Notes:
sretemaraPnoitpircseDsnoitidnoCtseT
I
CC
ID
CC
tnerruCylppuSrewoPtnecseiuQ
)1(
V
CC
V
NI
V
HGIHLTT@tupnIreptnerruCylppuS
CC
V
NI
.xaM=
VroDNG=
CC
.xaM=
)3(
V0.3=
.niM.pyT
— 062058
—— 057
)2(
.xaMstinU
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at VCC = 3.3V, +25°C ambient.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to ICC.
PI3C16211 Switching Characteristics Over Operating Range
11261C3IP
moC
sretemaraPnoitpircseDsnoitidnoC
)3,2(
t
HLP
t
LHP
t
HZP
t
LZP
t
ZHP
t
ZLP
AXBot
XB,X
AotEOn
AotEOn
yaleDnoitagaporP
Aot
X
emiTelbanEsuB
Bro
X
X
emiTelbasiDsuB
Bro
X
X
)1(
C
L
R
L
C
L
R
L
Fp05=
005= Ω
Fp05=
005= Ω
005=R Ω
.niM.xaMstinU
— 52.0
5.15.6
5.15.5
Aµ
sn
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.
3
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56-Pin TSSOP (A) Package
56
PI3C16211
3.3V, High Bandwidth 24-Bit Bus Switch
.236
6.0
.244
6.2
1
X.XX
X.XX
56-Pin SSOP (V) Package
56
1
X.XX
DENOTES DIMENSIONS
X.XX
IN MILLIMETERS
.0197
BSC
0.50
DENOTES DIMENSIONS
IN MILLIMETERS
.720
.730
.025 BSC
0.635
.547
.555
18.29
18.54
13.9
14.1
.008
.0135
0.20
0.34
.291
.299
7.39
7.59
.007
.011
0.17
0.27
10.06
10.56
.008
0.20
Nom.
.396
.416
1.20
.047
Max.
.002
.006
0.05
0.15
Gauge Plane
0-8˚
.010
.015
.025
SEATING PLANE
0.25
0.381
0.635
x 45˚
0.45
0.75
.319
8.1
.018
.030
BSC
.02
.04
0.51
1.01
.110 2.79
.008
.016
0.20
0.40
Max
.004
.008
0.09
0.20
Ordering Information
traPegakcaP-niPhtdiWerutarepmeT
A11261C3IP)A(POSST-65lim-042
V11261C3IP)V(POSS-65lim-003
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
C°58otC°0
consumption.
Power-Supply Sequencing
Proper power-supply sequencing is recommended for all CMOS
devices. Always apply VCC before applying V
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
4
and signals to
BIAS
PS8456C 05/29/01