FST163244U [IDT]
WAFER-0, Wafer;
| 型号： | FST163244U |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | WAFER-0, Wafer |
| 文件： | 总6页 (文件大小：70K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IDT74FST163244
16-BIT BUS SWITCH
FEATURES:
DESCRIPTION:
• Bus switches provide zero delay paths
• Low switch on-resistance
The FST163244 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. They generate
little or no noise of their own while providing a low resistance path for an
external driver. These devices connect input and output ports through an
n-channelFET. Whenthegate-to-sourcejunctionofthisFETisadequately
forward-biased, thedeviceconductsandtheresistancebetweeninputand
outputportsissmall. Withoutadequatebiasonthegate-to-sourcejunction
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)
• Hot insertion capability
• Very low power dissipation
• Available in SSOP and TSSOP packages
Thelowon-resistanceandsimplicityoftheconnectionbetweeninputand
output ports reduces the delay in this path to close to zero.
The FST163244 is pin-compatible with and functionally similar to the
FCT16244T.
FUNCTIONALBLOCKDIAGRAM
3OE
1OE
3A1
3B1
1A1
1B1
3A2
3A3
3B2
3B3
1A2
1A3
1B2
1B3
3A4
3B4
1A4
1B4
2OE
2A1
4OE
4A1
2B1
4B1
2A2
2A3
2B2
2B3
4A2
4A3
4B2
4B3
2A4
2B4
4A4
4B4
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MAY 2002
1
© 2002 Integrated Device Technology, Inc.
DSC-3615/3
IDT74FST163244
16-BITBUSSWITCH
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
1
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
1OE
1B1
2OE
1A1
TSTG
IOUT
°C
mA
2
Maximum Continuous Channel Current
NOTES:
3
1B2
1A2
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.
GND
4
GND
5
1B3
1A3
2. Vcc, Control, and Switch terminals.
6
1B4
1A4
VCC
7
VCC
8
2B1
2A1
CAPACITANCE(1)
Symbol
CIN
Parameter
Conditions(2) Typ. Unit
9
2B2
2A2
Control Input Capacitance
Switch Input/Output Capacitance
6
pF
pF
GND
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
GND
CI/O
Switch Off
12
2B3
2B4
3B1
2A3
2A4
3A1
NOTES:
1. Capacitance is characterized but not tested.
2. TA = 25°C, f = 1MHz, VIN = 0V, VOUT = 0V.
3B2
3A2
GND
GND
PINDESCRIPTION
3B3
3A3
Pin Names
Description
3B4
3A4
xOE
xAx
Output Enable Inputs (Active LOW)
A Port Bits
VCC
VCC
xBx
B Port Bits
4B1
4A1
4B2
4A2
GND
GND
4B3
4B4
4A3
4A4
FUNCTIONTABLE(1)
Inputs
4OE
3OE
xOE
L
Outputs
Connect A to B
SSOP/ TSSOP
TOP VIEW
H
Disconnect A from B
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
2
IDT74FST163244
16-BITBUSSWITCH
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = –40°C to +85°C, VCC = 5.0V ± 10%
Symbol
VIH
Parameter
Test Conditions(1)
Guaranteed Logic HIGH for Control Inputs
Guaranteed Logic LOW for Control Inputs
Min.
2
Typ.(2)
—
Max.
—
Unit
V
Control Input HIGH Voltage
Control Input LOW Voltage
Control Input HIGH Current
Control Input LOW Current
VIL
—
—
0.8
±1
V
IIH
VCC = Max.
VI = VCC
VI = GND
—
—
µA
IIL
—
—
±1
IOZH
IOZL
Current During
VCC = Max., VO = 0 to 5V
VCC = Min., IIN = –18mA
—
—
—
—
±1
±1
µA
V
Bus Switch Disconnect
VIK
Clamp Diode Voltage
—
–0.7
–1.2
IOFF
ICC
Switch Power Off Leakage
VCC = 0V, VIN or VO ≤ 5.5V
VCC = Max., VIN = GND or VCC
—
—
—
±1
3
µA
µA
Quiescent Power Supply Current
0.1
BUSSWITCHIMPEDANCEOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ±10%
Symbol
Parameter
Switch On Resistance, A to B(2)
Test Conditions
Min.
Typ.(1)
Max.
7
Unit
RON
Vcc = Min., VIN = 0V, ION = 12mA
Vcc = Min., VIN = 2.4V, ION = 8mA
A(B) = 0V, B(A) = Vcc
—
—
5
Ω
10
—
15
IOS
Short Circuit Current, A to B(3)
100
—
mA
NOTES:
1. Typical values are at Vcc = 5.0V, +25°C ambient.
2. The voltage drop between the indicated ports divided by the current through the switch.
3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
3
IDT74FST163244
16-BITBUSSWITCH
INDUSTRIALTEMPERATURERANGE
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
Dynamic Power Supply
Current(4,5)
VCC = Max.
One Enable Pin Toggling
50% Duty Cycle
VIN = VCC
VIN = GND
—
120
160
µA/
MHz/
Enable
IC
Total Power Supply Current(6)
VCC = Max.
One Enable Pin Toggling
VIN = VCC
VIN = GND
—
—
1.2
1.5
1.6
2.4
mA
fi = 10MHz
VIN = VCC
VIN = 3.4V
50% Duty Cycle
VCC = Max.
Four Enable Pins Toggling
VIN = VCC
VIN = GND
—
—
4.8
5.8
6.4
9.4
fi = 10MHz
VIN = VCC
VIN = 3.4V
50% Duty Cycle
NOTES:
1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. TA = –40°C to +85°C
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. Switch inputs do not contribute to ∆ICC.
4. This parameter represents the current required to switch the internal capacitance of the control inputs at the specified frequency.
Switch inputs generate no significant power supply currents as they transition. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations.
5. CPD = ICCD/VCC
CPD = Power Dissipation Capacitance
6. 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
SWITCHINGCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Industrial: TA = -40°C to +85°C, VCC = 5.0V ± 10%
VCC = 5V ± 10%
VCC = 4V
Symbol
tPLH
Description(1)
Min.
Typ.
Max.
Max.
Unit
DataPropagationDelay
A to B, B to A(2)
—
—
0.25
0.25
ns
tPHL
tPZH
Switch CONNECT Delay
xOE to A or B
Switch DISCONNECT Delay
xOE to A or B
Charge Injection During Switch DISCONNECT
xOE to A or B(3)
1.5
1.5
—
—
—
5.6
5.2
—
—
—
—
ns
ns
tPZL
tPHZ
tPLZ
|QCI|
1.5
pC
NOTES:
1. See test circuits and waveforms.
2. The bus switch contributes no Propagation Delay other than the RC Delay of the load interacting with the RC of the switch.
3. |QCI| is the charge injection for a single switch DISCONNECT and applies to either single switches or multiplexers. Charge injection is reduced because the injection
from the DISCONNECT of the first path is compensated by the CONNECT of the second path.
4
IDT74FST163244
16-BITBUSSWITCH
INDUSTRIALTEMPERATURERANGE
TESTCIRCUITSANDWAVEFORMS
3V
1.5V
0V
VCC
7.0V
SAME PHASE
INPUT TRANSITION
500Ω
tPLH
tPLH
tPHL
tPHL
VOH
1.5V
VOL
VOUT
VIN
OUTPUT
Pulse
Generator
D.U.T.
50pF
3V
1.5V
0V
500Ω
OPPOSITE PHASE
INPUT TRANSITION
T
R
L
C
Propagation Delay
Test Circuits for All Outputs
3V
DATA
1.5V
0V
INPUT
tH
tSU
SWITCHPOSITION
3V
1.5V
0V
TIMING
INPUT
Test
Switch
Closed
Open
Open Drain
Disable Low
Enable Low
tREM
3V
1.5V
0V
ASYNCHRONOUS
CONTROL
All Other Tests
3V
1.5V
0V
SYNCHRONOUS
CONTROL
DEFINITIONS:
tSU
tH
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Set-up, Hold, and Release Times
VCC
ENABLE
DISABLE
(3)
(1)
3V
VOUT
CL =
Switch
Out
1 MHz
Signal
Generator
Enable/Select
D.U.T.
CONTROL
INPUT
1.5V
0V
Switch In
tPZL
tPLZ
Switch In
(MUX) (2)
3.5V
1.5V
3.5V
VOL
OUTPUT
NORMALLY
LOW
50pF
SWITCH
CLOSED
0.3V
0.3V
tPZH
tPHZ
VOH
OUTPUT
NORMALLY
HIGH
Charge Injection
SWITCH
OPEN
1.5V
0V
NOTES:
0V
1. Select is used with multiplexers for measuring IQDCII during multiplexer select. During
all other tests Enable is used.
2. Used with multiplexers to measure IQDCII only.
3. Charge Injection = ∆VOUT CL, with Enable toggling for IQCII or Select toggling for IQDCII.
∆VOUT is the change in VOUT and is measured with a 10MΩ probe.
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.
LOW-HIGH-LOW
1.5V
PULSE
tW
HIGH-LOW-HIGH
PULSE
1.5V
Pulse Width
5
IDT74FST163244
16-BITBUSSWITCH
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
IDT
XX
FST
XXX
XX
XXX
Device Type
Temp. Range
Family
Package
PV
PA
Shrink Small Outline Package
Thin Shrink Small Outline Package
16-Bit Flow Through Switch
244
163
74
Double-Density Bus Switch
-40°C to +85°C
DATASHEETDOCUMENTHISTORY
5/28/2002 Removed TVSOP package
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www.idt.com
6
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