TARGET SPECIFICATION
Product Features
Near-zero propagation delay
5ohm switches connect inputs to outputs
Direct bus connection when switches are ON
Undershoot protection to 2V (data inputs only)
Packages available:
24-pin 150-mil wide plastic QSOP (Q)
24-pin 173-mil wide plastic TSSOP (L)
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3384C2
10-Bit, 2-Port Bus Switch with
Dual Side Undershoot Protection
Product Description
Pericom Semiconductors PI5C series of logic circuits are produced
using the Companys advanced submicron CMOS technology,
achieving industry performance.
The PI5C3384C2 is a 10-bit, 2-port Dual Side bus switch with
undershoot protection designed with a low ON resistance allowing
inputs to be connected directly to outputs. The bus switch creates
no additional propagational delay or additional ground bounce
noise. The switch is turned ON by the Bus Enable (BE) input signal.
Two bus enable signals are provided, one for each of the upper and
lower five bits of the two 10-bit buses. The PI5C3384C2 is designed
with an internal 25ohm resistor to reduce noise reflection in high-
speed applications.
Logic Block Diagram
A0
B0
Product Pin Configuration
BE
A
B
0
A
0
A
1
B
1
B
2
A
2
A
3
B
3
B
4
A
4
GND
24
1
23
2
22
3
21
4
5
24-Pin
20
6
Q, L
19
18
7
17
8
16
9
15
10
14
11
13
12
A4
B4
A5
B5
A9
B9
Vcc
B
9
A
9
A
8
B
8
B
7
A
7
A
6
B
6
B
5
A
5
BE
B
BEA
BEB
Product Pin Description
Pin Name
BE
A
, BE
B
A
0
-A
9
B
0
-A
9
GND
V
CC
Description
Bus Enable Inputs (Active LOW)
Bus A
Bus B
Ground
Power
Truth Table
(1)
Function
Disconnect
Connect
Connect
Connect
Note:
1. H
X
L
Hi-Z
=
=
=
=
BE
A
H
L
H
L
BE
B
H
H
L
L
B
0-B4
Hi-Z
A
0-A4
Hi-Z
A
0-A4
B
5-B9
Hi-Z
Hi-Z
A
5-A9
A
5-A9
High Voltage Level
Dont Care
Low Voltage Level
High Impedance
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TARGET SPECIFICATION
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3384C2
10-Bit, 2-Port Bus Switch with
Dual Side Undershoot Protection
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 & 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 ...............................................................................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 specifica-
tion 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
= 5V ±5%)
Parameters Description
V
IH
V
IL
I
IH
I
IL
I
OZH
V
IK
R
ON
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
High-Impedance Output Current
Clamp Diode Voltage
Switch On Resistance
(4)
Test Conditions
(1)
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
V
CC
= Max., V
IN
= V
CC
V
CC
= Max., V
IN
= GND
0
≤
A, B
≤
V
CC
V
CC
= Min., I
IN
= 18mA
V
CC
= Min., V
IN
= 0.0V, PI5C3384C2
I
ON
= 48mA
V
CC
= Min., V
IN
= 2.4V, PI5C3384C2
I
ON
= 15mA
V
UP
Undershoot Protection Voltage
(3)
Max. Inputs, No Contention,
Undershoot Pulse Duration <25ns
Min.
2.0
0.5
Typ
(2)
0.7
5
10
Max.
0.8
±1
±1
±1
1.8
7
15
2.0
Units
V
V
µA
µA
µA
V
ohm
ohm
V
Capacitance
(T
A
= 25°C, f = 1 MHz)
Parameters
(5)
C
IN
C
OFF
C
ON
Description
Input Capacitance
A/B Capacitance, Switch Off
A/B Capacitance, Switch On
Test Conditions
V
IN
= 0V
V
IN
= 0V
V
IN
= 0V
Typ
Max.
6
6
8
Units
pF
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 V
CC
= 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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TARGET SPECIFICATION
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3384C2
10-Bit, 2-Port Bus Switch with
Dual Side Undershoot Protection
Min.
Typ
(2)
Max.
100
2.5
Units
µA
mA
Power Supply Characteristics
Parameters Description
I
CC
∆I
CC
Quiescent Power
Supply Current
Supply Current per
Input @ TTL HIGH
Test Conditions
(1)
V
CC
= Max.,
V
IN
= GND or V
CC
V
CC
= Max., V
IN
= 3.4V
(3)
PI5C3384C2
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, +25°C 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 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.
PI5C3384/3384C Switching Characteristics over Operating Range
PI5C3384C2
Com
Parame te rs
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
De s cription
Propagation Delay
(2,3)
Ax to Bx, Bx to Ax
Bus Enable Time
BEx to Ax or Bx
Bus Disable Time
BEx to Ax or Bx
C
L
= 50pF
R
L
= 500ohm
Conditions
M in.
1.5
1.5
Typ.
M ax.
0.25
6.5
5.5
ns
Units
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.
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TARGET SPECIFICATION
24-Pin TSSOP (L)
24
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI5C3384C2
10-Bit, 2-Port Bus Switch with
Dual Side Undershoot Protection
24-Pin QSOP (Q)
24
.150
.157
3.81
3.99
.015 x 45˚
0.38
1
.337
.344
8.56
8.74
.016 0.406
.050 1.27
.053
.069
1.35
1.75
.228
.244
5.79
6.20
.007
.010
0.178
0.254
.033
0.84
SEATING
PLANE
.004 0.101
.010 0.254
.025
typical
0.635
.008 0.203
.012 0.305
X.XX DENOTES DIMENSIONS
X.XX IN MILLIMETERS
.169
.177
4.3
4.5
1
.303
.311
7.7
7.9
.047
1.20
Max
.004
.008
0.45 .018
0.75 .030
.252
BSC
6.4
0.09
0.20
SEATING
PLANE
.0256
BSC
0.65
.007
.012
0.19
0.30
.002
.006
0.05
0.15
X.XX DENOTES CONTROLLING
X.XX DIMENSIONS IN MILLIMETERS
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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