PI5C3257LEX [PERICOM]
Quad 2:1 Mux/DeMux Bus Switch; QUAD 2 ： 1复用器/解复用器总线开关
| 型号： | PI5C3257LEX |
| 厂家： | 
PERICOM SEMICONDUCTOR CORPORATION |
| 描述： | Quad 2:1 Mux/DeMux Bus Switch |
| 文件： | 总6页 (文件大小：694K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Features:
Description
• Near-Zero propagation delay
Pericom Semiconductor’s PI5C3257 is a Quad 2:1 multiplexer/
demultiplexer with three-state outputs that is pinout and function
compatiblewiththePI74FCT257T,74F257,and74ALS/AS/LS257.
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
•
•
Direct bus connection when switches are ON
Ultra Low Quiescent Power (0.2µA typical)
– Ideally suited for notebook applications
•
Pin compatible with 74 series 257 logic devices
• Packaging (Pb-free & Green available):
– 16-pin 150-mil wide plastic QSOP (Q)
– 16-pin 150-mil wide plastic SOIC (W)
– 16-pin 173-mil wide plasticTSSOP (L)
Block Diagram
Pin Configuration
IA1 IB0 IB1 IC0 IC1 ID0 ID1
IA0
S
IA0
IA1
YA
16
15
14
13
12
11
10
9
V
E
1
2
3
4
5
6
7
8
CC
ID0
ID1
YD
IC0
IC1
YC
E
S
IB0
IB1
YB
GND
YA
YB
YC
YD
(1)
Pin Description
Truth Table
Pin Name
IAn-IDn
S
Description
Data Inputs
Select Inputs
Enable
E
H
L
S
X
L
YA
YB
YC
YD
Function
Disable
S = 0
Hi-Z Hi-Z Hi-Z Hi-Z
IA0
IB0
IC0
ID0
E
L
H
IA1
IB1
IC1
ID1
S = 1
Note:
YA-YD
GND
Vcc
Data Outputs
Ground
1. H = High Voltage Level, L = Low Voltage Level
Power
01/14/13
13-0015
1
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
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 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. Ex-
posure 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..............................................................................120mA
Power Dissipation..................................................................................0.5W
DC Electrical Characteristics (Over the Operating Range, T = –40°C to +85°C, V = 5V ±5%)
A
CC
(1)
(2)
Parameters
Description
Input HIGH Voltage
Input LOW Voltage
Input HIGH Current
Input LOW Current
Test Conditions
Min.
2.0
Typ
Max.
Units
V
Guaranteed Logic HIGH Level
Guaranteed Logic LOW Level
IH
V
V
–0.5
0.8
±1
IL
I
IH
V
cc
= Max., V = V
IN cc
I
IL
V
cc
= Max., V = GND
±1
µA
IN
I
High Impedance Output Current 0 ≤ I, Y ≤ V
±1
OZH
cc
V
Clamp Diode Voltage
V
cc
= Min., I = –18 mA
–0.7
–1.2
V
IK
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 = 48mA
7
cc
IN
ON
Ω
(4)
R
Switch On-Resistance
ON
= Min., V = 2.4V, I = 15mA
10
15
cc
IN
ON
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.
Capacitance (T = 25°C, f = 1 MHz)
A
(1)
Description
Parameters
Test Conditions
Typ
Max.
Units
c
Input Capacitance
6
6
IN
c
In/Yn Capacitance, Switch Off
In/Yn Capacitance, Switch On
V
= 0V
IN
pF
OFF
c
ON
14
Notes:
1. This parameter is determined by device characterization but is not production tested.
01/14/13
13-0015
2
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Power Supply Characteristics
(1)
(2)
Parameters
Description
Test Conditions
Min.
Typ
Max.
Units
Quiescent Power
Supply Current
V
or V
= GND
IN
I
cc
V
= Max.
0.1
3.0
µA
cc
cc
Supply Current per
Input @ TTL HIGH
(3)
∆I
V
V
= Max.
= Max.,
V = 3.4V
IN
2.5
mA
cc
cc
cc
I and Y Pins Open
BE = GND
Control Input Toggling
50% Duty Cycle
Supply Current per
Input per MHz
mA/
MHz
I
0.25
ccD
(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.
Parameters
Description
Conditions
Units
Min.
Max.
(1,2)
Propagation Delay
t
IY
0.25
In to Yn
Bus Select Time
Sn to Yn
t
0.5
0.5
0.5
5.2
4.8
5.0
SY
c = 50pF
R = 500Ω
L
ns
L
t
t
Bus Enable Time
E to Yn
PZH
PZL
Bus Disable Time
E to Yn
t
t
PHZ
PLZ
Notes:
1. This parameter is guaranteed but not tested on Propagation Delays.
2. 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.
01/14/13
13-0015
3
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Packaging Mechanical: 16-Pin QSOP (Q)
DOCUMENT CONTROL NO.
PD - 1201
REVISION: G
16
.008
0.20
MIN.
DATE: 11/07/07
.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
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
Pericom Semiconductor Corporation
3545 N. 1st Street, San Jose, CA 95134
1-800-435-2335 • www.pericom.com
Note:
1) Controlling dimensions in inches.
2) Ref: JEDEC MO-137B/AB.
DESCRIPTION: 16-Pin 150-Mil Wide QSOP
3) Dimensions do not include mold flash, protrusions or gate burrs
PACKAGE CODE: Q
01/14/13
13-0015
4
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Packaging Mechanical: 16-Pin SOIC (W)
DATE: 06/15/12
DESCRIPTION: 16-Pin, 150mil Wide SOIC
PACKAGE CODE: W
#: PD-1004
DOCUMENT CONTROL
REVISION: F
2012-0398
01/14/13
13-0015
5
PI5C3257
Quad 2:1 Mux/DeMux Bus Switch
Packaging Mechanical: 16-Pin TSSOP (L)
DATE: 05/03/12
Notes:
1. Refer JEDEC MO-153F/AB
2. Controlling dimensions in millimeters
3. Package outline exclusive of mold flash and metal burr
DESCRIPTION: 16-Pin, 173mil Wide TSSOP
PACKAGE CODE: L
DOCUMENT CONTROL #: PD-1310
REVISION: F
12-0372
Note:
•
For latest package info, please check: http://www.pericom.com/products/packaging/mechanicals.php
Ordering Information
Ordering Code
Packaging Code
Package Description
PI5C3257QEX
Q
W
L
Pb-free & Green, 16-pin 150-mil wide plastic QSOP
Pb-free & Green, 16-pin 150-mil wide plastic SOIC
Pb-free & Green, 16-pin 173-mil wide plastic TSSOP
PI5C3257WEX
PI5C3257LEX
Notes:
•
•
Thermal characteristics can be found on the company web site at www.pericom.com/packaging/
E = Pb-free & Green
• Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation • 1-800-435-2336 • www.pericom.com
01/14/13
13-0015
6
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