IDT74CBTLV16211PV [IDT]
LOW-VOLTAGE 24-BIT BUS SWITCH; 低电压24位总线开关
| 型号： | IDT74CBTLV16211PV |
| 厂家： | 
INTEGRATED DEVICE TECHNOLOGY |
| 描述： | LOW-VOLTAGE 24-BIT BUS SWITCH |
| 文件： | 总5页 (文件大小：62K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
IDT74CBTLV16211
LOW-VOLTAGE 24-BIT
BUS SWITCH
FEATURES:
DESCRIPTION:
• 5Ω A/B bi-directional switch
The CBTLV16211 operates as a single 24-bit bus switch or as a dual
12-bit bus switch, which provides high speed switching. This device has
very low ON resistance, resulting in under 250ps propagation delay
throughouttheswitch. WhenOutputEnable(OE)islow,thecorresponding
12-bitbusswitchisonandportAisconnectedtoPortB. When OEishigh,
the switch is off and a high impedance exists between Port A and Port B.
To ensure the high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor.
• Isolation Under Power-Off Conditions
• Over-voltage tolerant
• Latch-up performance exceeds 100mA
• VCC = 2.3V - 3.6V, normal range
• ESD >2000V per MIL-STD-883, Method 3015; >200V using
machine model (C = 200pF, R = 0)
• Available in SSOP, TSSOP, and TVSOP packages
APPLICATIONS:
• 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONALBLOCKDIAGRAM
SIMPLIFIEDSCHEMATIC,EACH
SWITCH
2
54
SW
1B1
1A1
14
42
SW
1B12
1A12
A
B
56
15
1OE
2A1
41
2B1
SW
OE
28
55
29
2B12
2A12
2OE
SW
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
AUGUST 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5888/4
IDT74CBTLV16211
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSSWITCH
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol Description
Max.
–0.5to4.6
–0.5to4.6
128
Unit
V
56
1
1OE
NC
1A1
VCC
VI
SupplyVoltageRange
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
2
2OE
1B1
1B2
1B3
1B4
1B5
InputVoltageRange
V
1A2
1A3
1A4
1A5
3
ContinuousChannelCurrent
Input Clamp Current, VI/O < 0
StorageTemperatureRange
mA
mA
°C
4
IIK
–50
5
TSTG
–65to+150
6
NOTE:
7
1A6
GND
1A7
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.
8
GND
1B6
9
1A8
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
1B7
1A9
1B8
1A10
1A11
1A12
2A1
1B9
1B10
1B11
1B12
2B1
PINDESCRIPTION
2A2
Pin Names
xOE
Description
VCC
2A3
2B2
OutputEnable(ActiveLOW)
2B3
xAx
PortAInputsorOutputs
PortBInputsorOutputs
GND
2A4
GND
2B4
xBx
2A5
2B5
2A6
2B6
2A7
2B7
2A8
2B8
2A9
2B9
(1)
FUNCTION TABLE(EACH 12-BIT BUS SWITCH)
2A10
2A11
2A12
2B10
2B11
2B12
Input
OE
L
Operation
A-Port = B-Port
Disconnect
H
NOTE:
1. H = HIGH Voltage Level
= LOW Voltage Level
SSOP/ TSSOP/ TVSOP
TOP VIEW
L
OPERATINGCHARACTERISTICS(1)
Symbol
Parameter
Test Conditions
Min.
2.3
1.7
2
Max.
3.6
—
Unit
VCC
SupplyVoltage
V
V
VIH
High-LevelControlInputVoltage
Low-LevelControlInputVoltage
OperatingFree-AirTemperature
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
VCC = 2.3V to 2.7V
VCC = 2.7V to 3.6V
—
VIL
TA
—
0.7
0.8
+85
V
—
–40
°C
NOTE:
1. All unused control inputs of the device must be held at VCC or GND to ensure proper device operation.
2
IDT74CBTLV16211
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSSWITCH
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Operating Condition: TA = –40°C to +85°C
Symbol
VIK
Parameter
Test Conditions
Min.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ.(1)
—
—
—
—
—
—
4
Max.
–1.2
±1
5
Unit
V
ControlInputs, DataI/O
ControlInputs
Data I/O
VCC = 3V, II = –18mA
II
VCC = 3.6V, VI = VCC or GND
VCC = 3.6V, VO = 0V or 3.6V switch disabled
VCC = 0V, VI or VO = 0V or 3.6V
VCC = 3.6V, IO = 0, VI = VCC or GND
VCC = 3.6V, one input at 3V, other inputs at VCC or GND
VI = 3V or 0
µA
µA
µA
µA
µA
pF
IOZ
IOFF
ICC
10
10
300
—
—
8
(2)
∆ICC
ControlInputs
ControlInputs
CI
CIO(OFF)
VO = 3V or 0, OE = VCC
6.5
5
pF
Max. at VCC = 2.3V
Typ. at VCC = 2.5V
VI = 0
IO = 64mA
IO = 24mA
IO = 15mA
IO = 64mA
IO = 24mA
IO = 15mA
5
8
(3)
RON
VI = 1.7V
VI = 0
27
5
40
7
Ω
VCC = 3V
5
7
VI = 2.4V
10
15
NOTES:
1. Typical values are at 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each input that is at the specified voltage level rather than VCC or GND.
3. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch.
SWITCHINGCHARACTERISTICS
VCC = 2.5V ± 0.2V
VCC = 3.3V ± 0.3V
Min. Max.
Symbol
Parameter
Min.
—
Max.
Unit
(1)
tPD
PropagationDelay
A to B or B to A
OutputEnableTime
OE to A or B
0.15
—
0.25
ns
ns
ns
tEN
1
1
7
1
6.2
tDIS
OutputDisabletime
OE to A or B
7.2
1
7.7
NOTE:
1. The propagation delay is the calculated RC time constant of the typical on-state resistance of the switch and the specified load capacitance when driven by an ideal voltage source
(zero output impededance).
3
IDT74CBTLV16211
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSSWITCH
TEST CIRCUITS AND WAVEFORMS
TESTCONDITIONS
VCC(1)=3.3V±0.3V
VCC(2)=2.5V±0.2V
Unit
V
VIH
VT
0V
Symbol
VLOAD
VIH
SAME PHASE
INPUT TRANSITION
6
2 x Vcc
Vcc
tPHL
tPHL
tPLH
tPLH
3
V
VOH
VT
VOL
OUTPUT
VT
1.5
300
300
50
Vcc / 2
150
V
VLZ
mV
mV
pF
VIH
VT
0V
VHZ
150
OPPOSITE PHASE
INPUT TRANSITION
CL
30
Propagation Delay
VLOAD
Open
GND
VCC
DISABLE
ENABLE
VIH
VT
CONTROL
INPUT
500Ω
0V
tPZL
tPLZ
VIN
VOUT
(1, 2)
Pulse
VLOAD/2
D.U.T.
VLOAD/2
OUTPUT
NORMALLY
LOW
Generator
SWITCH
CLOSED
VT
VOL + VLZ
VOL
500Ω
tPHZ
RT
tPZH
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
VT
0V
0V
Test Circuits for All Outputs
NOTE:
1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH.
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
Enable and Disable Times
NOTES:
1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns.
2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns.
SWITCHPOSITION
Test
tPLZ/tPZL
tPHZ/tPZH
tPD
Switch
VLOAD
GND
Open
4
IDT74CBTLV16211
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSSWITCH
ORDERINGINFORMATION
XXX
XX
CBTLV
IDT
XX
Temp. Range
Device Type Package
PV
PA
PF
Shrink Small Outline Package
Thin Shrink Small Outline Package
Thin Very Small Outline Package
16211
74
Low-Voltage 24-Bit Bus Switch
–40°C to +85°C
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logichelp@idt.com
(408) 654-6459
www.idt.com
5
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