PI5C3251LX [PERICOM]
Bus Exchanger, CBT/FST/QS/5C/B Series, 1-Func, 8-Bit, True Output, PDSO16, 0.173 INCH, PLASTIC, TSSOP-16;型号: | PI5C3251LX |
厂家: | PERICOM SEMICONDUCTOR CORPORATION |
描述: | Bus Exchanger, CBT/FST/QS/5C/B Series, 1-Func, 8-Bit, True Output, PDSO16, 0.173 INCH, PLASTIC, TSSOP-16 解复用器 |
文件: | 总6页 (文件大小:354K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
PI5C3251
8:1 Mux/DeMux BusSwitch
1
2
Features:
Description:
• Near-Zero propagation delay
Pericom Semiconductor’s PI5C3251 is a Dual 8:1 Multiplexer/
demultiplexer with three-state outputs that is pinout compatible
with the PI74FCT251T, 74F251, and 74ALS/AS/LS 251. Inputs
can be connected to outputs with low on resistance (5Ω) with no
additional ground bounce noise or propagation delay.
• 5Ω switches connect inputs to outputs
3
•
•
Direct bus connection when switches are ON
Ultra Low Quiescent Power (0.2 µA Typical)
– Ideally suited for notebook applications
•
Pin compatible with 74 series 251 logic devices
4
5
• Packaging (Pb-free & Green available):
– 16-pin 150-mil wide plastic QSOP (Q)
– 16-pin 300-mil wide plastic SOIC (S)
– 16-pin 150-mil wide plastic SOIC (W)
– 16-pin 173-mil wide plastic TSSOP (L)
Block Diagram
Pin Configuration
6
I1
I2
I3
I4
I5
I6
I7
I0
16
15
14
13
12
11
10
9
I3
I2
1
2
3
4
5
6
7
8
VCC
I4
7
E
S0
S1
S2
I1
I5
I0
I6
8
Y
I7
NC
E
S0
S1
S2
9
10
11
12
13
14
15
GND
Y
(1)
Truth Table
Pin Description
Select
Pin Name
Description
E
H
L
L
L
L
L
L
L
L
S2
X
L
S1
X
L
S0
X
L
Y
Function
Disable
I0–7
S0–2
E
Data Inputs
Select Inputs
Enable
Hi-Z
I0
S2-0 = 0
S2-0 = 1
S2-0 = 2
S2-0 = 3
S2-0 = 4
S2-0 = 5
S2-0 = 6
S2-0 = 7
L
L
H
L
I1
Y
Data Outputs
Ground
L
H
H
L
I2
GND
L
H
L
I3
V
Power
CC
H
H
H
H
I4
L
H
L
I5
H
H
I6
H
I7
Note:
1.
H = High Voltage Level, L = Low Voltage Level
PS7016B
09/14/04
1
PI5C3251
8:1 Mux/DeMux BusSwitch
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.)
Note:
Storage Temperature .................................................................. –65°C to +150°C
Ambient Temperature with Power Applied ................................. –40°C to +85°C
Stresses greater than those listed under MAXIMUM
RATINGSmaycausepermanentdamagetothedevice.
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.
Supply Voltage to Ground Potential (Inputs & V Only)........... –0.5V to +7.0V
CC
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
DC Electrical Characteristics (Over the Operating Range, TA = –40°C to +85°C, VCC =5V ±5%)
(1)
(2)
Parameters
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Test Conditions
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
Min.
2.0
Typ
Max.
Units
V
V
IH
IL
V
–0.5
0.8
±1
I
I
I
V
V
= Max., V = V
IN CC
IH
CC
CC
= Max., V = GND
±1
µA
IL
IN
High Impedance Output Current 0 ≤ I, Y ≤ V
±1
OZH
CC
V
Clamp Diode Voltage
V
= Min., I = –18 mA
–0.7
–1.2
V
IK
CC
IN
(3)
I
Short Circuit Current
I (Y) = 0V, Y (I) = V
100
mA
mV
OS
CC
V
Input Hysteresis at Control Pins
150
5
H
V
V
= Min., V = 0.0V, I = 48 mA
7
CC
CC
IN
ON
(4)
R
Switch On-Resistance
Ω
ON
= Min., V = 2.4V, I = 15 mA
10
15
IN
ON
Capacitance (T = 25°C, f = 1 MHz)
A
(5)
Parameters
Description
Input Capacitance
I - I Capacitance, Switch Off
Test Conditions
Typ.
Max.
6
Units
C
C
C
C
IN
6
I(OFF)
Y(OFF)
I(ON)
0
7
V
= 0V
pF
IN
Y Capacitance, Switch Off
I - I Capacitance, Switch On
48
54
35
0
7
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, TA = 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 I and Y pin at indicated current through the switch. On-Resistance is determined by the lower of the
voltages on the two (I,Y) pins.
5. This parameter is determined by device characterization but is not production tested.
PS7016B
09/14/04
2
PI5C3251
8:1 Mux/DeMux BusSwitch
Power Supply Characteristics
(1)
(2)
Parameters
Description
Test Conditions
Min. Typ
Max. Units
V
= GND or
IN
ICC
Quiescent Power Supply Current
V
= Max.
0.1
3.0
2.5
µA
CC
V
CC
Supply Current per
Input @ TTL HIGH
(3)
ΔICC
V
V
= Max.
= Max.,
V
= 3.4V
IN
mA
CC
CC
I and Y Pins Open
E = GND
Control Input Toggling
50% Duty Cycle
Supply Current per
Input per MHz
mA/
MHz
ICCD
0.25
(4)
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 (VIN = 3.4V, control inputs only); I and Y 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 I
and Y 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
Com.
(1)
Parameters
Description
Conditions
Unit
Min.
Max.
(2,3)
Propagation Delay
t
0.25
IY
In to Y
Bus Select Time
Sn to Y
t
0.5
0.5
0.5
6.6
6.0
6.0
SY
CL = 50 pF
RL = 500Ω
ns
t
Bus Enable Time
E to Y
PZH
t
PZL
t
Bus Disable Time
E to Y
PHZ
t
PLZ
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.
PS7016B
09/14/04
3
PI5C3251
8:1 Mux/DeMux BusSwitch
Packaging Mechanical: 16-pin QSOP (Q)
16
.008
0.20
MIN.
.008
.013
0.20
0.33
.150
.157
3.81
3.99
Guage Plane
0˚-6˚
.010
.016
.035
0.41
0.89
0.254
Detail A
1
.189
.197
.041
1.04
REF
4.80
5.00
0.38
.015 x 45°
.008
0.203 REF
1.35
1.75
.053
.069
Detail A
0.178
0.254
.007
.010
0.41
1.27
.016
.050
SEATING
PLANE
.228
.244
.004
.010
0.101
0.254
.008
.012
.025
BSC
0.635
5.79
6.19
0.203
0.305
X.XX
X.XX
DENOTES DIMENSIONS IN MILLIMETERS
Packaging Mechanical: 16-pin SOIC (S)
16
7.40
7.60
.2914
.2992
0.254
0.737
.010
.029
x 45˚
1
0.23
0.32
.398 10.10
.413 10.50
.0091
.0125
0-8˚
.020 0.508
.030 0.762
0.41
1.27
2.35
2.64
.016
.050
.0926
.1043
.394
.419
10.00
10.65
SEATING
PLANE
0.10
0.30
.0040
.0118
.013
.050
BSC
.020
0.33
0.51
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
1.27
PS7016B
09/14/04
4
PI5C3251
8:1 Mux/DeMux BusSwitch
Packaging Mechanical: 16-pin SOIC (W)
16
3.78
3.99
.149
.157
0.25
0.50
.0099
.0196
x 45˚
1
0.19
0.25
.0075
.0098
0-8˚
.386
.393
9.80
10.00
0.41
1.27
.016
.050
1.35
1.75
.053
.068
.0155
.0260
.2284
.2440
5.80
6.20
0.393
0.660
SEATING PLANE
REF
0.10
0.25
.0040
.0098
.050
BSC
.013
.020
1.27
0.330
0.508
X.XX
X.XX
DENOTES DIMENSIONS
IN MILLIMETERS
Packaging Mechanical: 16-pin TSSOP (L)
16
.169
.177
4.3
4.5
1
0.09
0.20
.193
.201
.004
.008
4.9
5.1
.047
max.
1.20
0.45 .018
0.75 .030
SEATING
PLANE
.252
BSC
6.4
.002
.006
0.05
0.15
.0256
BSC
.007
.012
X.XX DENOTES CONTROLLING
X.XX DIMENSIONS IN MILLIMETERS
0.65
0.19
0.30
PS7016B
09/14/04
5
PI5C3251
8:1 Mux/DeMux BusSwitch
Ordering Information
Ordering Code
PI5C3251Q
Package Code
Package Description
16-pin 150-mil wide QSOP
Q
Q
S
PI5C3251QE
PI5C3251S
Pb-free & Green, 16-pin 150-mil wide QSOP
16-pin 300-mil wide SOIC
PI5C3251SE
S
Pb-free & Green, 16-pin 300-mil wide SOIC
16-pin 150-mil wide SOIC
PI5C3251W
W
W
L
PI5C3251WE
PI5C3251L
Pb-free & Green, 16-pin 150-mil wide SOIC
16-pin 173-mil wide TSSOP
PI5C3251LE
L
Pb-free & Green, 16-pin 173-mil wide TSSOP
Notes:
1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
PS7016B
09/14/04
6
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