1
PS8391C 09/15/04
n
o
i
t
c
n
u
F
x
E
B
0
A
-
9
1
A
t
c
e
n
n
o
c
s
i
D
H
Z
-i
H
t
c
e
n
n
o
C
L
0
B
-
9
1
B
Truth Table
(1)
Note:
1. H
= High Voltage Level
L
= Low Voltage Level
Hi-Z = High Impedance
Pin Description
Pin Configuration
Features
Near-Zero propagation delay
5-ohm switches connect inputs to outputs
Undershoot Protection up to 1V
Direct bus connection when switches are ON
32X384 function with flow through pinout make board
layout easier
Ultra-low quiescent power (120A typical)
-- ideally suited for notebook applications
Industrial operating temperature: 40C to +85C
Packaging (Pb-free & Green avaliable):
-- 48-pin 240-mil wide plastic TSSOP
-- 48-pin 150-mil wide plastic BQSOP
Description
Pericom Semiconductor's PI5C16862C is configured as a 20-bit, 2-
port bus switch designed with a low On-Resistance (5-ohm) 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 (BEx) input
signal.
The PI5C16862C can withstand undershoot of up to 1V.
Block Diagram
BE
2
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
A
9
GND
BE
4
A
10
A
11
A
12
A
13
A
14
A
15
A
16
A
17
A
18
A
19
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
VCC
BE
1
B
0
B
1
B
2
B
3
B
4
B
5
B
6
B
7
B
8
B
9
V
CC
BE
3
B
10
B
11
B
12
B
13
B
14
B
15
B
16
B
17
B
18
B
19
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
48-Pin
A, B
BE
1
A
4
A
0
B
4
B
0
BE
4
A
19
A
15
B
19
B
15
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
PI5C16862C
20-Bit, 2-Port Bus Switch
with Undershoot Protection
e
m
a
N
n
i
P
n
o
i
t
p
i
r
c
s
e
D
x
E
B
)
W
O
L
e
v
it
c
A
(
s
t
u
p
n
I
e
l
b
a
n
E
s
u
B
0
A
-
9
1
A
A
s
u
B
0
B
-
9
1
B
B
s
u
B
2
PS8391C 09/15/04
PI5C16862C
20-Bit, 2-Port Bus Switch
with Undershoot Protection
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 5V 10%)
Storage Temperature............................................................ 65C to +150C
Ambient Temperature with Power Applied ........................... 40C to +85C
Supply Voltage to Ground Potential (Inputs & V
CC
Only) ... 0.5V to +7.0V
Supply Voltage to Ground Potential (Outputs & D/O Only) . 0.5V to +7.0V
DC Input Voltage ................................................................... 0.5V to +7.0V
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 condi-
tions for extended periods may affect reliability.
Capacitance
(T
A
= 25C, f = 1 MHz)
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
= 5.0V, 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.)
s
r
e
t
e
m
a
r
a
P
)
5
(
n
o
i
t
p
i
r
c
s
e
D
s
n
o
i
t
i
d
n
o
C
t
s
e
T
l
a
c
i
p
y
T
s
t
i
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
=
6
F
p
C
F
F
O
f
f
O
h
c
ti
w
S
,
e
c
n
a
ti
c
a
p
a
C
B
/
A
V
N
I
V
0
=
6
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
1
s
r
e
t
e
m
a
r
a
P
n
o
i
t
p
i
r
c
s
e
D
s
n
o
i
t
i
d
n
o
C
t
s
e
T
)
1
(
.
n
i
M
.
p
y
T
)
2
(
.
x
a
M
s
t
i
n
U
V
H
I
e
g
a
tl
o
V
H
G
I
H
t
u
p
n
I
l
e
v
e
L
H
G
I
H
c
i
g
o
L
d
e
e
t
n
a
r
a
u
G
0
.
2
--
--
V
V
L
I
e
g
a
tl
o
V
W
O
L
t
u
p
n
I
l
e
v
e
L
W
O
L
c
i
g
o
L
d
e
e
t
n
a
r
a
u
G
5
.
0
--
8
.
0
I
H
I
t
n
e
r
r
u
C
H
G
I
H
t
u
p
n
I
V
C
C
V
,.
x
a
M
=
N
I
V
=
C
C
--
--
1
A
I
L
I
t
n
e
r
r
u
C
W
O
L
t
u
p
n
I
V
C
C
V
,.
x
a
M
=
N
I
D
N
G
=
--
--
1
I
H
Z
O
t
n
e
r
r
u
C
t
u
p
t
u
O
e
c
n
a
d
e
p
m
I
h
g
i
H
0
I
N
Y
,
N
V
C
C
--
--
1
V
K
I
e
g
a
tl
o
V
e
d
o
i
D
p
m
a
l
C
V
C
C
I
,.
n
i
M
=
N
I
A
m
8
1
=
--
--
8
.
1
V
I
S
O
t
n
e
r
r
u
C
ti
u
c
ri
C
t
r
o
h
S
)
3
(
V
=
)
A
(
B
,
V
0
=
)
B
(
A
C
C
0
0
1
--
--
A
m
V
H
s
n
i
P
l
o
r
t
n
o
C
t
a
s
i
s
e
r
e
t
s
y
H
t
u
p
n
I
--
0
5
1
--
V
m
R
N
O
e
c
n
a
t
s
i
s
e
R
N
O
h
c
ti
w
S
)
3
(
V
C
C
V
,.
n
i
M
=
N
I
I
,
V
0
.
0
=
N
O
A
m
8
4
=
--
5
.
5
8
V
C
C
V
,.
n
i
M
=
N
I
I
,
V
4
.
2
=
N
O
A
m
5
1
=
--
9
6
1
PI5C16862C
20-Bit, 2-Port Bus Switch
with Undershoot Protection
3
PS8391C 09/15/04
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Power Supply Characteristics
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
= 5.0V, +25C ambient.
3. Per TTL driven input (V
IN
= 3.4V, control inputs only); A and B pins do not contribute to I
CC
.
4. This current applies to 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.
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.
Switching Characteristics over Operating Range
s
r
e
t
e
m
a
r
a
P
n
o
i
t
p
i
r
c
s
e
D
s
n
o
i
t
i
d
n
o
C
t
s
e
T
)
1
(
.
n
i
M
.
p
y
T
)
2
(
.
x
a
M
s
t
i
n
U
I
C
C
r
e
w
o
P
t
n
e
c
s
e
i
u
Q
t
n
e
r
r
u
C
y
l
p
p
u
S
V
C
C
.
x
a
M
=
V
N
I
V
r
o
D
N
G
=
C
C
0
2
1
0
0
2
A
I
C
C
r
e
w
o
P
t
n
e
c
s
e
i
u
Q
H
G
I
H
L
T
T
@
t
u
p
n
I
V
C
C
.
x
a
M
=
V
N
I
V
4
.
3
=
)
3
(
5
.
2
A
m
I
D
C
C
r
e
p
t
n
e
r
r
u
C
y
l
p
p
u
S
z
H
M
r
e
p
t
u
p
n
I
)
4
(
V
C
C
n
e
p
O
n
i
P
B
d
n
a
A
,.
x
a
M
=
e
l
c
y
C
y
t
u
D
%
0
5
,
g
n
il
g
g
o
T
t
u
p
n
I
l
o
r
t
n
o
C
,
D
N
G
=
x
E
B
5
2
.
0
/
A
m
z
H
M
s
r
e
t
e
m
a
r
a
P
n
o
i
t
p
i
r
c
s
e
D
s
n
o
i
t
i
d
n
o
C
)
1
(
C
2
6
8
6
1
C
5
I
P
s
t
i
n
U
.
m
o
C
.
n
i
M
.
x
a
M
t
H
L
P
t
L
H
P
y
a
l
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
F
p
0
5
=
R
L
0
0
5
=
5
2
.
0
s
n
t
H
Z
P
t
L
Z
P
e
m
i
T
e
l
b
a
n
E
s
u
B
x
B
r
o
x
A
o
t
x
E
B
5
.
1
5
.
6
t
Z
H
P
t
Z
L
P
e
m
i
T
e
l
b
a
s
i
D
s
u
B
x
B
r
o
x
A
o
t
x
E
B
5
.
1
5
.
5
4
PS8391C 09/15/04
PI5C16862C
20-Bit, 2-Port Bus Switch
with Undershoot Protection
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
.236
.244
.488
.496
.002
.006
SEATING PLANE
.007
.010
.0197
BSC
.004
.008
.319
1
48
12.4
12.6
6.0
6.2
0.50
0.17
0.27
8.1
0.05
0.15
0.09
0.20
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
.018
.030
0.45
0.75
.047
1.20 Max
BSC
.014
.0157 BSC
0.40
0.356
.008 0.20
.002
.009
5
0.05
0.25
.079
2.0
.010 0.25
Gauge Plane
.150
.157
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
3.80
4.00
.228
.244
5.80
6.20
.020
.029
0.50
0.75
.063
1.60
.015 0.381
.386
.394
9.80
10.00
.0051
.009
0.13
0.23
1
48
x 45
BSC
Nom
Max
Nom
REF
Packaging Mechanical: 48-Pin TSSOP (A)
Packaging Mechanical: 48-Pin BQSOP (B)
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Ordering Information
Ordering Code
Package Code
Package Description
PI5C16862CA
A
48-pin TSSOP
PI5C16862CAE
A
Pb-free & Green, 48-pin TSSOP
PI5C16862CB
B
48-pin BQSOP
PI5C16862CBE
B
Pb-free & Green, 48-pin BQSOP
PDF 
ZIP