21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C16210
PI5C162210 (25Ω)
Ω
20-Bit, 2-Port Bus Switch
Product Features:
Near-zero propagation delay
5Ω or
25Ω
switches connect inputs to outputs
Direct bus connection when switches are ON
32X384 function with flow through pinout make board
layout easier
• Ultra-low quiescent power (0.2µA typical)
– ideally suited for notebook applications
• Industrial operating temperature: –40°C to +85°C
• Packages available:
– 48-pin 150-mil wide plastic BQSOP (B)
– 48-pin 173-mil wide plastic TVSOP (K)
– 48-pin 240-mil wide plastic TSSOP (A)
– 48-pin 300-mil wide plastic SSOP (V)
•
•
•
•
Product Description:
Pericom Semiconductor’s PI5C series of BusSwitch circuits are
produced in the Company’s advanced sub-micron CMOS
technology, achieving industry leading speed.
The PI5C16210 is configured as 20-bit, 2-port bus switches designed
with a low ON resistance (5Ω) 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 (xOE) input signal.
The PI5C162210 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 Pin Configuration
Logic Block Diagram
1A
1
1B
1
NC
1A
1
1A
2
1A
3
1A
4
1A
5
1A
6
GND
1A
7
1A
8
1A
9
1A
10
2A
1
2A
2
V
CC
2A
3
GND
2A
4
2A
5
2A
6
2A
7
2A
8
2A
9
2A
10
1
48
2
47
3
46
4
45
5
44
6
43
7
42
8
41
9
40
10
39
11
38
48-Pin
12
A48
37
13
B48
36
K48
14
V48
35
15
34
16
33
17
32
18
31
19
30
20
29
21
28
22
27
23
26
24
25
1OE
2OE
1B
1
1B
2
1B
3
1B
4
1B
5
GND
1B
6
1B
7
1B
8
1B
9
1B
10
2B
1
2B
2
2B
3
GND
2B
4
2B
5
2B
6
2B
7
2B
8
2B
9
2B
10
1A
10
1B
10
1OE
2A
1
2B
1
2A
10
2B
10
2OE
Truth Table
(1)
Inputs
1O E
L
L
H
H
2O E
L
H
L
H
Inputs /Outputs
1A,1B
1A = 1B
1A = 1B
Z
Z
2A,2B
2A = 2B
Z
2A = 2B
Z
Product Pin Description
Pin Name
1OE, 2OE
1A1-1A10, 2A1-2A10
1B1 - 1B10, 2B1 - 2B10
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Note:
1. H = High Voltage Level
L = Low Voltage Level
Hi-Z = High Impedance
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PI5C16210/162210
20-Bit, 2-PORT BUS SWITCH
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
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 +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 ................................................................................... 120 mA
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 conditions for
extended periods may affect reliability.
DC Electrical Characteristics
(Over the Operating Range, T
A
= –40°C to +85°C, V
CC
= 4 to 5V)
Parameters Description
V
IH
V
IL
I
I
Input HIGH Voltage
Input LOW Voltage
Input Current
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= 5.5V., V
IN
= 5.5V
OR
GND
V
CC
= 0V, V
IN
= V
CC
I
OZH
V
IK
I
OS
V
H
R
ON
High Impedance Output Current
Clamp Diode Voltage
Short Circuit Current
(3)
Input Hysteresis at Control Pins
Switch On Resistance
(4)
V
CC
= 4.5V, V
IN
= 0.0V,
I
ON
= 30 mA, 64 mA
V
CC
= 4.5V, V
IN
= 2.4V,
I
ON
= 15 mA
V
CC
= 4 V, V
IN
= 2.4V,
I
ON
= 15 mA
16210
162210
16210
162210
16210
0
≤
A, B
≤
V
CC
V
CC
= 4.5V, I
IN
= –18 mA
A (B) = 0V, B (A) = V
CC
Min.
2.0
–0.5
±1
—
—
—
100
—
—
20
—
20
—
Typ
(2)
—
—
—
—
—
–0.7
—
150
5
28
—
35
14
Max.
—
0.8
—
±1
10
–1.2
—
—
7
40
15
48
20
Ω
Ω
Units
V
V
µA
µA
µA
V
mA
mV
Ω
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(5)
C
IN
C
OFF
Description
Input Capacitance
A/B Capacitance, Switch Off
Test Conditions
V
IN
= 0V or 3V
V
IN
= 0V or 3V
Typ
4.5
5.5
Units
pF
pF
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 = 5.0V, T
A
= 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.
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PI5C16210/162210
20-Bit, 2-PORT BUS SWITCH
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
I
CCD
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Supply Current per
Input per MHz
(4)
Test Conditions
(1)
V
CC
= Max.
V
CC
= Max.
V
CC
= Max.,
A and B Pins Open
Control Input Toggling
50% Duty Cycle
V
IN
= GND or V
CC
V
IN
= 3.4V
(3)
Min.
Typ
(2)
0.1
Max.
10
2.5
0.25
Units
µA
mA
mA/
MHz
Notes:
1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Per TTL driven input (V
IN
= 3.4V, control inputs 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.
PI5C16210 Switching Characteristics over Operating Range
PI5C16210
Vcc = 5V ±0.5V
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
X
OE to Ax or Bx
Bus Disable Time
X
OE to Ax or Bx
Conditions
(1)
C
L
= 50 pF
R
L
= 500Ω
1.5
1.5
Min
Max
0.25
6.5
5.5
V
CC
= 4V
Min
Max
0.25
6.3
5.5
Unit
ns
ns
ns
PI5C162210 Switching Characteristics over Operating Range
PI5C162210
Vcc = 5V ±0.5V
Parameters
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Description
Propagation Delay
(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
X
OE to Ax or Bx
Bus Disable Time
X
OE to Ax or Bx
Conditions
(1)
C
L
= 50 pF
R
L
= 500Ω
1.5
1.5
Min
Max
1.25
6.5
5.5
V
CC
= 4V
Min
Max
1.25
6.3
5.5
Unit
ns
ns
ns
Notes:
1. See test circuit and wave forms.
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.
Pericom Semiconductor Corporation
2380 Bering Drive • San Jose, CA 95131 • 1-800-435-2336 • Fax (408) 435-1100 • http://www.pericom.com
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