74FST163383PV [IDT]
SSOP-48, Tube;
| 型号： | 74FST163383PV |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | SSOP-48, Tube |
| 文件： | 总6页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
20-BIT BUS EXCHANGE
SWITCH
IDT74FST163383
FEATURES:
DESCRIPTION:
• Bus switches provide zero delay paths
• Low switch on-resistance: 5Ω
The FST163383 belongs to IDT's family of Bus switches. Bus switch
devices perform the function of connecting or isolating two ports without
providing any inherent current sink or source capability. Thus they
generatelittleornonoiseoftheirownwhileprovidingalowresistancepath
foranexternaldriver. Thesedevicesconnectinputandoutputportsthrough
an n-channel FET. When the gate-to-source junction of this FET is
adequately forward-biased the device conducts and the resistance be-
tween input and output ports is small. Without adequate bias on the gate-
to-source junction of the FET, the FET is turned off, therefore with no VCC
applied, the device has hot insertion capability.
• TTL-compatible input and output levels
• ESD > 2000V per MIL-STD-883, Method 3015; > 200V using
machine model (C = 200pF, R = 0)
• Available in SSOP and TSSOP packages
Thelowon-resistanceandsimplicityoftheconnectionbetweeninputand
output ports reduces the delay in this path to close to zero.
TheFST163383providesfour4-bitTTL-compatibleportsthatsupports
2 way bus exchange. The BX pin controls the bus exchange and the BE
pin serves as the enable pin.
FUNCTIONALBLOCKDIAGRAM
A0
C0
A5
C5
B0
A4
D0
C4
B5
A9
D5
C9
D4
D9
B4
B9
BX1
BX2
BE2
BE1
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MAY 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-5515/1
IDT74FST163383
20-BITBUSEXCHANGESWITCH
INDUSTRIALTEMPERATURERANGE
PINCONFIGURATION
ABSOLUTEMAXIMUMRATINGS(1)
Symbol
Description
Max
–0.5 to +7
–65 to +150
128
Unit
V
(2)
VTERM
Terminal Voltage with Respect to GND
Storage Temperature
48
47
46
45
44
1
2
Vcc
D4
BE1
TSTG
IOUT
°C
mA
Maximum Continuous Channel Current
C0
A0
NOTES:
1. Stresses greater than those listed under ABSOLUTE 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.
B4
3
4
A4
C4
D3
B3
A3
C3
D2
B0
D0
5
2. Vcc, Control, and Switch terminals.
C1
A1
B1
D1
C2
6
43
42
41
7
CAPACITANCE(1)
Symbol
CIN
Parameter
Conditions(2) Typ. Unit
8
Control Input Capacitance
Switch Input/Output Capacitance
4
pF
pF
9
40
39
CI/O
Switch Off
10
NOTES:
1. Capacitance is characterized but not tested.
2. TA = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V.
A2
11
B2
38
37
36
35
34
GND
BX1
Vcc
D9
12
13
14
BE2
C5
A5
PINDESCRIPTION
Pin Names
A0-9, B0-9
I/O
I/O
I/O
Description
B9
15
16
Buses A, B
Buses C, D
33
32
A9
C9
D8
B8
A8
C8
D7
B5
D5
C0-9, D0-9
BE1,2
BE1,2
I
I
Bus Switch Enable (Active LOW)
Bus Exchange
17
C6
A6
B6
D6
C7
18
19
20
21
22
31
30
29
FUNCTIONTABLE(1)
28
27
BE1
BX1
A0-4
B0-4
Description
H
X
Z
Z
Disconnect
L
L
C0-4
D0-4
D0-4
C0-4
Connect
A7
23
24
B7
26
25
L
H
Exchange
GND
BX2
BE2
H
BX2
X
A5-9
Z
B5-9
Z
Description
Disconnect
Connect
SSOP/ TSSOP
TOP VIEW
L
L
C5-9
D5-9
D5-9
C5-9
L
H
Exchange
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
Z = High-Impedance
2
IDT74FST163383
20-BITBUSEXCHANGESWITCH
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ± 10%
Symbol
VIH
Parameter
Input HIGH Voltage
Input LOW Voltage
Test Conditions(1)
Guaranteed Logic HIGH for Control Inputs
Guaranteed Logic LOW for Control Inputs
Min.
2
Typ.(2)
—
Max.
—
Unit
V
VIL
—
—
—
—
—
0.8
±1
V
IIH
Input HIGH Current
Input LOW Current
VCC = Max.
VI = VCC
—
µA
IIL
VI = GND
VO = VCC
VO = GND
—
±1
IOZH
High Impedance Output Current
VCC = Max.
—
±1
µA
IOZL
IOS
(3-State Output Pins)
ShortCircuitCurrent
Clamp Diode Voltage
SwitchOnResistance(4)
—
—
—
±1
—
Vcc = Max., VO = GND(3)
300
mA
V
VIK
RON
VCC = Min., IIN = –18mA
—
—
—
–0.7
5
–1.2
7
Vcc = Min., VIN = 0V, ION = 30mA
Vcc = Min., VIN = 2.4V, ION = 15mA
Ω
10
15
IOFF
ICC
Input/Output Power Off Leakage
Quiescent Power Supply Current
VCC = 0V, VIN or VO ≤ 4.5V
VCC = Max., VI = GND or VCC
—
—
—
±1
3
µA
µA
0.1
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at Vcc = 5.0V, +25°C ambient.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
4. Measured by voltage drop between ports at indicated current through the switch.
POWERSUPPLYCHARACTERISTICS
Symbol
Parameter
Test Conditions(1)
Min.
Typ.(2)
Max.
Unit
∆ICC
Quiescent Power Supply Current
TTL Inputs HIGH
VCC = Max.
VIN = 3.4V(3)
—
0.5
1.5
mA
ICCD
IC
Dynamic Power Supply
Current(4)
VCC = Max.
Outputs Open
Enable Pin Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
30
40
µA/
MHz/
Switch
Total Power Supply Current(5)
VCC = Max.
Outputs Open
VIN = VCC
VIN = GND
—
—
6
8
mA
Enable Pins Toggling
(20 Switches Toggling)
VIN = VCC
VIN = 3.4V
6.5
9.5
fi = 10MHz
50% Duty Cycle
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type.
2. Typical values are at VCC = 5.0V, +25°C ambient.
3. Per TTL driven input (VIN = 3.4V). All other inputs at VCC or GND.
4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. IC = IQUIESCENT + IINPUTS + IDYNAMIC
IC = ICC + ∆ICC DHNT + ICCD (fiN)
ICC = Quiescent Current
∆ICC = Power Supply Current for a TTL High Input (VIN = 3.4V)
DH = Duty Cycle for TTL Inputs High
NT = Number of TTL Inputs at DH
ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL)
fi = Control Input Frequency
N = Number of Control Inputs Toggling at fi
All currents are in milliamps and all frequencies are in megahertz.
3
IDT74FST163383
20-BITBUSEXCHANGESWITCH
INDUSTRIALTEMPERATURERANGE
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 10%
Symbol
tPLH
Description(1)
Condition
CL = 50pF
RL = 500Ω
Min.
Typ.
Max.
Unit
DataPropagationDelay
Ax to Cx, Dx and/or Bx to Cx and/or Dx(3,4)
Switch Multiplex Delay
BX to Ax, Bx, Cx, Dx
Switch Turn On Delay
BE to Ax, Bx, Cx, Dx
Switch Turn Off Delay
—
—
0.25
ns
tPHL
tBX
1.5
1.5
1.5
—
—
—
6.5
6.5
5.5
ns
ns
tPZH
tPZL
tPHZ
ns
tPLZ
BE to Ax, Bx(3)
|QCI|
|QDCI|
ChargeInjection,Typical(5,6)
ChargeInjection,Typical(6,7)
—
—
1.5
0.5
—
—
pC
NOTES:
1. See test circuit and waveforms.
2. Minimum limits guaranteed but not tested.
3. This parameter is guaranteed by design but not tested.
4. The bus switch contributes no propagation 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 2.5ns for 50pF load. Since this time is constant and much smaller than the rise/fall times of typical driving signals, it adds very little propagation delay to the system.
Propagation delay on 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.
5. Measured at switch turn off, load = 50 pF in parallel with 10 MΩ scope probe, VIN = 0.0 volts.
6. Characterized parameter. Not 100% tested.
7. Measured at switch turn off through bus multiplexer, (e.g.- A to C = >A to D), load = 50 pF in parallel with 10 MΩ scope probe, VIN at A = 0.0 volts. Charge injection is reduced
because the injection from the turn off of the A to C switch is compensated by the turn on of the B to C switch.
4
IDT74FST163383
20-BITBUSEXCHANGESWITCH
INDUSTRIALTEMPERATURERANGE
TESTCIRCUITSANDWAVEFORMS
SWITCHPOSITION
VCC
Test
Switch
Closed
Open
7.0V
Open Drain
Disable Low
Enable Low
500Ω
VOUT
VIN
Pulse
Generator
All Other Tests
D.U.T.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
50pF
500Ω
T
R
L
C
Octal link
Test Circuits for All Outputs
3V
DATA
1.5V
0V
INPUT
LOW-HIGH-LOW
tH
tSU
1.5V
PULSE
3V
1.5V
0V
TIMING
INPUT
tW
ASYNCHRONOUS CONTROL
tREM
PRESET
3V
1.5V
0V
CLEAR
HIGH-LOW-HIGH
PULSE
1.5V
ETC.
SYNCHRONOUS CONTROL
PRESET
3V
Octal link
1.5V
0V
CLEAR
tSU
tH
CLOCK ENABLE
ETC.
Octal link
Pulse Width
Set-up, Hold, and Release Times
ENABLE
DISABLE
3V
1.5V
0V
3V
SAME PHASE
CONTROL
INPUT
1.5V
0V
INPUT TRANSITION
tPLH
tPLH
tPHL
tPHL
tPZL
tPLZ
VOH
1.5V
VOL
OUTPUT
3.5V
1.5V
3.5V
VOL
VOH
OUTPUT
NORMALLY
LOW
SWITCH
CLOSED
0.3V
0.3V
3V
1.5V
0V
tPZH
tPHZ
OPPOSITE PHASE
INPUT TRANSITION
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
1.5V
0V
Octal link
0V
Octal link
Propagation Delay
Enable and Disable Times
NOTES:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
5
IDT74FST163383
20-BITBUSEXCHANGESWITCH
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
IDT
XX
FST
XXX
XXX
X
Temp. Range
Family
Device Type
Package
PV
PA
Shrink Small Outline Package
Thin Shrink Small Outline Package
20-Bit Bus Exchange Switch
Double-Density Bus Switch
–40°C to +85°C
383
163
74
DATASHEETDOCUMENTHISTORY
5/28/2002 Removed TVSOP package
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(408) 654-6459
www.idt.com
6
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