1
PS8170D 10/01/04
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Features
Near-Zero propagation delay
5-ohm switches connect inputs to outputs when enabled
Fast Switching Speed - 4ns max.
Pin compatible with 74 series 16244
Operating Vcc: 3.0V to 3.6V
Industrial operating temperature: 40C to +85C
Packaging (Pb-free & Green available):
48-pin 240 mil wide thin plastic TSSOP (A)
48-pin 300 mil wide plastic SSOP (V)
Description
Pericom Semiconductor's PI3B16244 is a 16-bit, 4-port bus switch
that is pin compatible with the 74 series 16244 16-bit driver. Four
enable signals (nBE) turn the switch on similar to the enable signals
of the 16244. The bus switch creates no additional propagation
delay or ground bounce noise.
PI3B16244
3.3V, 16-Bit, 4-Port NanoSwitchTM
Block Diagram
Pin Description
Truth Table
(1)
Note:
1. H
= High Voltage Level
L
= Low Voltage Level
Hi-Z = High Impedance
Pin Configuration
1
BE
1
1
B
0
2
1
B
1
3
GND
4
1
B
2
5
1
B
3
6
V
CC
7
2
B
0
8
2
B
1
9
GND
10
2
B
2
11
2
B
3
12
3
B
0
13
3
B
1
14
GND
15
3
B
2
16
3
B
3
17
V
CC
18
4
B
0
19
4
B
1
20
GND
21
4
B
2
22
4
B
3
23
4
BE
24
2
BE
48
1
A
0
47
1
A
1
46
GND
45
1
A
2
44
1
A
3
43
V
CC
42
2
A
0
41
2
A
1
40
GND
39
2
A
2
38
2
A
3
37
3
A
0
36
3
A
1
35
GND
34
3
A
2
33
3
A
3
32
V
CC
31
4
A
0
30
4
A
1
29
GND
28
4
A
2
27
4
A
3
26
3
BE
25
n
o
i
t
c
n
u
F
E
B
n
7
-
0
A
n
t
c
e
n
n
o
c
s
i
D
H
Z
-i
H
t
c
e
n
n
o
C
L
7
-
0
B
n
e
m
a
N
n
i
P
O
/
I
n
o
i
t
p
i
r
c
s
e
D
E
B
n
I
)
w
o
L
e
v
it
c
A
(
e
l
b
a
n
E
t
u
p
t
u
O
s
u
B
7
A
n
-
0
A
n
O
/
I
A
s
u
B
7
B
n
-
0
B
n
O
/
I
B
s
u
B
2
BE
1
BE
1
B
1
1
B
0
1
A
1
1
A
0
1
B
1
1
B
0
1
A
3
1
A
2
2
B
1
2
B
0
2
A
1
2
A
0
2
B
3
2
B
2
2
A
3
2
A
2
4
BE
3
BE
3
B
1
3
B
0
3
A
1
3
A
0
3
B
1
3
B
0
3
A
3
3
A
2
4
B
1
4
B
0
4
A
1
4
A
0
4
B
3
4
B
2
4
A
3
4
A
2
B
A
BE
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
SW
PI3B16244
3.3V, 16-Bit, 4-Port NanoSwitchTM
2
PS8170D 10/01/04
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 3.0V to 3.6V)
Capacitance
(T
A
= 25C, f = 1 MHz)
Storage Temperature ...................................................... 65C to +150C
Ambient Temperature with Power Applied ...................... 40C to +85C
Supply Voltage Range ....................................................... 0.5V to +4.6V
DC Input Voltage ............................................................... 0.5V to +4.6V
DC Output Current ........................................................................120 mA
Power Dissipation ............................................................................. 0.5W
Note:
Stresses greater than those listed under MAXIMUM RAT-
INGS 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.
Maximum Ratings
(Above which useful life may be impaired. For user guidelines, not tested.)
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. 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.
4. This parameter is determined by device characterization but is not production tested.
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
B
,
A
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
=
7
.
0
2
.
1
V
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
8
V
C
C
V
,.
n
i
M
=
N
I
I
,
V
4
.
2
=
N
O
A
m
5
1
=
0
1
5
1
s
r
e
t
e
m
a
r
a
P
)
4
(
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
.
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
=
0
.
3
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
5
.
8
C
N
O
n
O
h
c
ti
w
S
,
e
c
n
a
ti
c
a
p
a
C
B
/
A
0
.
7
1
PI3B16244
3.3V, 16-Bit, 4-Port NanoSwitchTM
3
PS8170D 10/01/04
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
= 3.3V, +25C ambient.
3. Per TTL driven input (control inputs only); A and B pins do not contribute to I
CC
.
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.
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
(
.
n
i
M
e
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
1
A
I
C
C
r
e
p
t
n
e
r
r
u
C
y
l
p
p
u
S
H
G
I
H
L
T
T
@
t
u
p
n
I
V
C
C
.
x
a
M
=
V
N
I
V
0
.
3
=
)
3
(
--
--
0
5
7
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
,.
x
a
M
=
n
e
p
O
s
n
i
P
B
d
n
a
A
g
n
il
g
g
o
T
t
u
p
n
I
l
o
r
t
n
o
C
e
l
c
y
C
y
t
u
D
%
0
5
--
--
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
(
.
m
o
C
s
t
i
n
U
.
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
C
L
F
p
0
5
=
R
L
0
0
5
=
0
0
5
=
R
1
5
.
4
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
1
0
.
5
Applications Information
Logic Inputs
Logic control inputs can be driven up to +5.5V regardless of the supply voltage. For example, given a 5.0V supply, the control or
select pins may be driven low to 0V and high to 5.5V. Driving the control or select pins Rail-toRail
minimizes power consumption.
Power-Supply Sequencing and Hot Plug Information
Proper power-supply sequencing is recommended for all CMOS devices. Always apply V
CC
and GND before applying signals to the
input/output or control pins.
PI3B16244
3.3V, 16-Bit, 4-Port NanoSwitchTM
4
PS8170D 10/01/04
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Packaging Mechanical: 48-pin 240 Mil-Wide Thin Plastic TSSOP (A)
Packaging Mechanical: 48-pin 300 Mil-Wide Plastic SSOP (V)
.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
0.20
0.51
1.01
0.25
0.381
0.635
.008
.008
.016
0-8
0.20
0.40
.110 2.79
.010
Gauge Plane
.02
.04
.015
.025
x 45
.025 BSC
0.635
.291
.299
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
7.39
7.59
.395
.420
10.03
10.67
.620
.630
15.75
16.00
.008
.0135
0.20
0.34
1
48
Nom.
Max
PI3B16244
3.3V, 16-Bit, 4-Port NanoSwitchTM
5
PS8170D 10/01/04
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Ordering Information
Ordering Code
Package Code
Package Type
PI3B16244A
A
48-pin TSSOP
PI3B16244AE
A
Pb-free & Green, 48-pin TSSOP
PI3B16244V
V
48-pin SSOP
PI3B16244VE
V
Pb-free & Green, 48-pin SSOP
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
PDF 
ZIP