1
PS8192B 11/09/98
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PI3B16209
PI3B162209 (25
)
Product Description
Pericom Semiconductor's PI3B series of logic circuits are produced
in the Company's advanced 0.35 micron CMOS technology.
The PI3B16209 and PI3B162209 are 3.3 volt, 18-bit bus exchange
switches designed with a low ON resistance (5
) allowing inputs
to be connected directly to outputs. The devices operate as an 18-bit
bus switch or as a 9-bit exchanger, providing data exchange between
the four signal ports via the data select pins (S0-S2).
The PI5C162209 device has a built-in 25-ohm series resistor to
reduce noise resulting from reflections, thus eliminating the need
for an external terminating resistor.
Product Features
Near-zero propagation delay
5
switches connect inputs to outputs
Fast Switching speed - 5ns (max.)
Operating Range: 3.0V to 3.6V
Industrial operating temperature: 40C to +85C
Packages available:
48-pin 240-mil wide thin plastic TSSOP (A)
48-pin 300-mil wide plastic SSOP (V)
Logic Block Diagram
Product Pin Configuration
Function
S2
S1
S0
A1
A2
Disconnect
L
L
L
Z
Z
A1 to B1
L
L
H
B1
Z
A1 to B2
L
H
L
B2
Z
A2 to B1
L
H
H
Z
B1
A2 to B2
H
L
L
Z
B2
Disconnect
H
L
H
Z
Z
A1 to B1, A2 to B2
H
H
L
B1
B2
A1 to B2, A2 to B1
H
H
H
B2
B1
Truth Table
Product Pin Description
Pin Name
I/O
Description
S0-S2
I
Select Inputs
xAx
I/O
Bus A
xBx
I/O
Bus B
Note:
1. H = High Voltage Level
L = Low Voltage Level
Z = High Impedance
1
A
1
1
B
1
1
A
2
1
B
2
FLOW CONTROL
ONE OF NINE CHANNELS
S
0
S
1
S
2
1
2
3
4
5
6
7
3
A
1
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
1
A
1
1
A
2
S
0
GND
2
A
1
2
A
2
VCC
3
A
2
GND
4
A
1
4
A
2
5
A
1
5
A
2
6
A
2
GND
6
A
1
7
A
1
7
A
2
GND
8
A
1
8
A
2
9
A
1
9
A
2
3
B
1
1
B
1
1
B
2
S
1
2
B
1
2
B
2
GND
3
B
2
GND
4
B
1
4
B
2
5
B
1
5
B
2
GND
6
B
1
6
B
2
7
B
1
7
B
2
GND
8
B
1
8
B
2
9
B
1
9
B
2
S
2
32
31
30
29
28
27
26
25
48-PIN
A, V
3.3V, 18-Bit Bus Exchange Switch
PI3B16209/162209
3.3V, 18-Bit Bus-Exchange Switch
2
PS8192B 11/09/98
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Capacitance
(T
A
= 25C, f = 1 MHz)
Parameters
(4)
Description
Test Conditions
Typ
Units
C
IN
Input Capacitance
V
IN
= 0V
3
pF
C
OFF
A/B Capacitance, Switch Off
V
IN
= 0V
14
pF
C
ON
A/B Capacitance, Switch On
V
IN
= 0V
30
pF
Storage Temperature ................................................................. 65C to +150C
Ambient Temperature with Power Applied .................................. 0C 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
DC Electrical Characteristics
(Over the Operating Range, T
A
= 40C to +85C, V
CC
= 3.0V to 3.6V)
Parameters Description
Test Conditions
(1)
Min.
Typ
(2)
Max.
Units
V
IH
Input HIGH Voltage
Guaranteed Logic HIGH Level
2.0
--
--
V
V
IL
Input LOW Voltage
Guaranteed Logic LOW Level
0.5
--
0.8
V
I
IH
Input HIGH Current
V
CC
= Max., V
IN
= V
CC
--
--
1
A
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
A
V
IK
Clamp Diode Voltage
V
CC
= Min., I
IN
= 18mA
--
-0.7
1.2
V
R
ON
Switch On Resistance
(3)
V
CC
= Min., V
IN
= 0.0V,
16209
--
5
8
I
ON
= 48mA
162209
20
28
40
V
CC
= Min., V
IN
= 2.4V,
16209
--
10
15
I
ON
= 15mA
162209
20
35
48
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, 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.
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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 opera-
tional sections of this specification is not implied.
Exposure to absolute maximum rating conditions
for extended periods may affect reliability.
PI3B16209/162209
3.3V, 18-Bit Bus-Exchange Switch
3
PS8192B 11/09/98
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Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
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
10
A
Supply Current
I
CC
Supply Current per
V
CC
= Max.
V
IN
= 3.0V
(3)
750
A
Input @ TTL HIGH
I
CCD
Supply Current per
V
CC
= Max.
0.25
mA/
Input per MHz
(4)
A and B Pins Open
MHz
BE = GND
Control Input Toggling
50% Duty Cycle
Notes:
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, +25C ambient.
3. Per TTL driven input (control input 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 0.25 ns for 50 pF 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.
Com.
Parameters
Description
Conditions
(1)
Min.
Max.
Units
t
PLH
Propagation Delay
(2,3)
Cl = 50pF 16209
0.25
t
PHL
Ax to Bx, Bx to Ax
Rl = 500
162209
1.25
t
PZH
Bus Enable Time
Cl = 50pF, R
L
= 500
,
1
4.5
ns
t
PZL
BE to Ax or Bx
R = 500
t
PHZ
Bus Disable Time
1
5
t
PLZ
BE to Ax or Bx
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