1
PS8432B 06/23/00
Function
N
BE
A09
Disconnect
H
Hi-Z
Connect
L
B09
Truth Table
(1)
Note 1:
H
= High Voltage Level
L
= Low Voltage Level
Hi-Z = High Impedance
Logic Block Diagram
e
m
a
N
n
i
P
n
o
it
p
i
r
c
s
e
D
N
A
0
-
N
A
9
A
s
u
B
N
B
0
-
N
B
9
B
s
u
B
N
E
B
)
W
O
L
e
v
it
c
A
(
s
n
i
P
el
b
a
n
E
s
u
B
N
D
N
G
d
n
u
o
r
G
N
V
C
C
r
e
w
o
P
Product Pin Description
Note:
N
= 1 through 4 for each set of 10-Bit Buses.
Product Description
Pericom Semiconductors PI3C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry leading performance.
The PI3C34X461 is a 40-bit, 2-port bus switch designed with a low
ON resistance (5
) allowing inputs to be connected directly to
outputs. The bus switch creates no additional propagational delay
or additional ground bounce noise. The switches are turned ON by
the Bus Enable (BE) input signal.
Product Features
Near zero propagation delay
5
switches connect inputs to outputs
High Bandwidth (>200 MHz)
Permits Hot Insertion
Rail-to-Rail, 3.3V Switching
5V I/O Tolerant
Package available:
96-pin LFBGA (NB)
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PI3C34X461
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port, BusSwitch
1
BE
1
A
9
1
A
0
1
B
9
1
B
0
3
BE
3
A
9
3
A
0
3
B
9
3
B
0
2
BE
2
A
9
2
A
0
2
B
9
2
B
0
4
BE
4
A
9
4
A
0
4
B
9
4
B
0
2
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PI3C34X461
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port, Bus Switch
PS8432B 06/23/00
e
m
a
N
d
a
P
ll
a
B
e
m
a
N
d
a
P
ll
a
B
e
m
a
N
d
a
P
ll
a
B
e
m
a
N
d
a
P
ll
a
B
1
A
0
3
A
2
A
0
3
E
3
A
0
3
J
4
A
0
3
N
1
B
0
5
A
2
B
0
5
E
3
B
0
5
J
4
B
0
5
N
1
A
1
2
A
2
A
1
2
E
3
A
1
2
J
4
A
1
2
N
1
B
1
6
A
2
B
1
6
E
3
B
1
6
J
4
B
1
6
N
1
A
2
1
A
2
A
2
1
E
3
A
2
1
J
4
A
2
1
N
1
B
2
5
B
2
B
2
5
F
3
B
2
5
K
4
B
2
5
P
1
A
3
2
B
2
A
3
2
F
3
A
3
2
K
4
A
3
2
P
1
B
3
6
B
2
B
3
6
F
3
B
3
6
K
4
B
3
6
P
1
A
4
1
B
2
A
4
1
F
3
A
4
1
K
4
A
4
1
P
1
B
4
5
C
2
B
4
5
G
3
B
4
5
L
4
B
4
5
R
1
A
5
2
C
2
A
5
2
G
3
A
5
2
L
4
A
5
2
R
1
B
5
6
C
2
B
5
6
G
3
B
5
6
L
4
B
5
6
R
1
A
6
1
C
2
A
6
1
G
3
A
6
1
L
4
A
6
1
R
1
B
6
5
D
2
B
6
5
H
3
B
6
5
M
4
B
6
5
T
1
A
7
2
D
2
A
7
2
H
3
A
7
2
M
4
A
7
2
T
1
B
7
6
D
2
B
7
6
H
3
B
7
6
M
4
B
7
6
T
1
A
8
1
D
2
A
8
1
H
3
A
8
I
M
4
A
8
1
T
1
B
8
4
D
2
B
8
4
H
3
B
8
4
M
4
B
8
4
T
1
A
9
3
D
2
A
9
3
H
3
A
9
3
M
4
A
9
3
T
1
B
9
4
C
2
B
9
4
G
3
B
9
4
L
4
B
9
4
R
C
N
3
B
C
N
3
F
C
N
3
K
C
N
3
P
1
E
B
4
A
2
E
B
4
E
3
E
B
4
J
4
B
E
4
N
1
V
C
C
4
B
2
V
C
C
4
F
3
V
C
C
4
K
4
V
C
C
4
P
1
D
N
G
3
C
2
D
N
G
3
G
3
D
N
G
3
L
4
D
N
G
3
R
Product Pinout by Name
3
3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PS8432B 06/23/00
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PI3C34X461
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port, Bus Switch
1
A
2
1
A
1
1
A
0
1
E
B
1
B
0
1
B
1
1
A
4
1
A
3
C
N
1
V
C
C
1
B
2
1
B
3
1
A
6
1
A
5
1
D
N
G
1
B
9
1
B
4
1
B
5
1
A
8
1
A
7
1
A
9
1
B
8
1
B
6
1
B
7
2
A
2
2
A
1
2
A
0
2
E
B
2
B
0
2
B
1
2
A
4
2
A
3
C
N
2
V
C
C
2
B
2
2
B
3
2
A
6
2
A
5
2
D
N
G
2
B
9
2
B
4
2
B
5
2
A
8
2
A
7
2
A
9
2
B
8
2
B
6
2
B
7
3
A
2
3
A
1
3
A
0
3
E
B
3
B
0
3
B
1
3
A
4
3
A
3
C
N
3
V
C
C
3
B
2
3
B
3
3
A
6
3
A
5
3
D
N
G
3
B
9
3
B
4
3
B
5
3
A
8
3
A
7
3
A
9
3
B
8
3
B
6
3
B
7
4
A
2
4
A
1
4
A
0
4
E
B
4
B
0
4
B
1
4
A
4
4
A
3
C
N
4
V
C
C
4
B
2
4
B
3
4
A
6
4
A
5
4
D
N
G
4
B
9
4
B
4
4
B
5
4
A
8
4
A
7
4
A
9
4
B
8
4
B
6
4
B
7
Product Pinout [LFBGA(N96) Package]
T
P
M
R
N
L
K
J
4
3
2
1
6
5
H
F
D
G
E
C
B
A
Product Pin Assignment (Top View)
4
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PI3C34X461
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port, Bus Switch
PS8432B 06/23/00
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 3.3V 10%)
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.5
0.8
I
IH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
1
I
IL
Input LOW Current
V
CC
= Max., V
IN
= GND
1
A
I
OZH
High Impedance Output Current 0
A, B
V
CC
1
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
0.73
1.2
V
R
ON
Switch On Resistance
(4)
V
CC
= Min., V
IN
= 0.0V, I
ON
= 48mA
5
7
V
CC
= Min., V
IN
= 2.4V, I
ON
= 15mA
10
15
Storage Temperature ............................................................ 65C to +150C
Ambient Temperature with Power Applied ........................... 40C to +85C
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 Input Voltage ................................................................... 0.5V to +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 condi-
tions 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.
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
= 25C 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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
V
Capacitance
(T
A
= 25C, f = 1 MHz)
s
r
e
t
e
m
a
r
a
P
)
5
(
n
o
it
p
i
r
c
s
e
D
s
n
o
it
i
d
n
o
C
t
s
e
T
.
p
y
T
s
ti
n
U
C
N
I
e
c
n
a
ti
c
a
p
a
C
t
u
p
n
I
V
N
I
V
0
=
5
.
3
F
p
C
F
F
O
ff
O
h
c
ti
w
S
,
e
c
n
a
ti
c
a
p
a
C
B
/
A
V
N
I
V
0
=
0
.
5
C
N
O
n
O
h
c
ti
w
S
,
e
c
n
a
ti
c
a
p
a
C
B
/
A
V
N
I
V
0
=
0
.
0
1
5
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PS8432B 06/23/00
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PI3C34X461
3.3V, High Bandwidth, Hot Insertion,
40-Bit, 2-Port, Bus Switch
1
6
4
X
4
3
C
3
I
P
.
m
o
C
s
r
e
t
e
m
a
r
a
P
n
o
it
p
i
r
c
s
e
D
s
n
o
it
i
d
n
o
C
.
n
i
M
.
x
a
M
s
ti
n
U
t
H
L
P
t
L
H
P
y
al
e
D
n
o
it
a
g
a
p
o
r
P
)
3
,
2
(
x
A
o
t
x
B
,
x
B
o
t
x
A
C
L
R
,
F
p
0
5
=
L
0
0
5
=
5
2
.
0
s
n
t
H
Z
P
t
L
Z
P
e
m
i
T
el
b
a
n
E
s
u
B
x
B
r
o
x
A
o
t
E
B
5
.
1
5
.
6
t
Z
H
P
t
Z
L
P
e
m
i
T
el
b
a
si
D
s
u
B
x
B
r
o
x
A
o
t
E
B
5
.
1
5
.
5
Power Supply Characteristics
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
I
CC
Quiescent Power
V
CC
= Max.
V
IN
= GND or V
CC
260
500
Supply Current
I
CC
Supply Current per
V
CC
= Max.
V
IN
= 3.0V
(3)
750
Input @ TTL HIGH
Notes:
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, +25C ambient.
3. Per TTL driven input (control input only); A and B pins do not contribute to Icc.
4. This current applies to the control inputs only and represent the current required to switch internal capacitance at the specified
frequency. The A and B inputs generate no significant AC or DC currents as they transition. This parameter is not tested, but is
guaranteed by design.
Switching Characteristics over Operating Range
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.
A
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