IDT74CBTLV16212PA8 [IDT]
Bus Exchanger, CBTLV/3B Series, 2-Func, 12-Bit, True Output, PDSO56, TSSOP-56;型号: | IDT74CBTLV16212PA8 |
厂家: | INTEGRATED DEVICE TECHNOLOGY |
描述: | Bus Exchanger, CBTLV/3B Series, 2-Func, 12-Bit, True Output, PDSO56, TSSOP-56 光电二极管 逻辑集成电路 |
文件: | 总5页 (文件大小:76K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
LOW-VOLTAGE 24-BIT
BUS EXCHANGE SWITCH
IDT74CBTLV16212
PRELIMINARY
DESCRIPTION:
ꢀEATURES:
• 5Ω A/B bi-directional switch
• 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
The CBTLV16212 provides a set of 24 high-speed switches for bus
exchangingandswitching. The device has lowONresistance, resulting
inunder250ps propagationdelaythroughthe switch. The CBTLV16212
operates as asingle24-bitbus switchoras a12-bitbus exchanger,which
provides data exchangingbetweenthe foursignalports throughthe data
select(S0-S2)pins.
The CBTLV16212 has the break-before-make feature, which allows
zero current when switching between ports B1 and B2.
APPLICATIONS:
• 3.3V High Speed Bus Switching and Bus Isolation
ꢀUNCTIONALBLOCKDIAGRAM
SIMPLIꢀIEDSCHEMATIC,EACH
SWITCH
2
54
SW
1A1
1B1
SW
SW
3
53
1A2
SW
1B2
B
A
27
30
SW
12A1
12B1
SW
SW
28
29
12A2
SW
12B2
FLOW CONTROL
CIRCUITRY
1
S0
S1
S2
56
55
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
MARCH 2002
1
c
2002 Integrated Device Technology, Inc.
DSC-5889/2
IDT74CBTLV16212
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSEXCHANGESWITCH
ABSOLUTEMAXIMUMRATINGS(1)
PINCONꢀIGURATION
Symbol Description
Max.
–0.5to4.6
–0.5to4.6
128
Unit
V
S0
1A1
1A2
2A1
2A2
3A1
3A2
GND
4A1
4A2
5A1
5A2
6A1
6A2
7A1
7A2
VCC
1
56
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
S1
S2
VCC
VI
SupplyVoltageRange
2
InputVoltageRange
V
3
1B1
1B2
2B1
2B2
3B1
GND
3B2
4B1
4B2
5B1
5B2
6B1
6B2
7B1
7B2
8B1
GND
8B2
9B1
9B2
10B1
10B2
11B1
11B2
12B1
12B2
ContinuousChannelCurrent
Input Clamp Current, VI/O < 0
StorageTemperatureRange
mA
mA
° C
4
IIK
–50
5
TSTG
–65to+150
6
NOTE:
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.
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
PINDESCRIPTION
Pin Names
Sx
Description
DataSelect
xAx
PortAInputs orOutputs
PortBInputs orOutputs
xBx
ꢀUNCTIONTABLE(1)
8A1
GND
8A2
9A1
9A2
10A1
10A2
11A1
11A2
12A1
12A2
Inputs
S1
L
Inputs/Outputs
S2
L
S0
L
A1
Z
A2
Z
Operation
Disconnect
L
L
H
L
B1
B2
Z
Z
A1 port = B1 port
A1 port = B2 port
A2 port = B1 port
A2 port = B2 port
Disconnect
L
H
Z
L
H
H
L
B1
B2
Z
H
H
H
L
Z
L
H
L
Z
H
B1
B2
A1 port = B1 port
A2 port = B2 port
A1 port = B2 port
A2 port = B1 port
H
H
H
B2
B1
SSOP/ TSSOP/ TVSOP
TOP VIEW
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
OPERATINGCHARACTERISTICS(1)
Symbol
VCC
Parameter
SupplyVoltage
Test Conditions
Min.
2.3
1.7
2
Max.
3.6
—
Unit
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
V
—
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
IDT74CBTLV16212
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSEXCHANGESWITCH
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
OperatingCondition:TA = –40°C to +85°C
Symbol Parameter
Test Conditions
Min.
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Typ.(1)
—
—
—
—
—
—
5
Max.
–1.2
±1
5
Unit
V
VIK
II
ControlInputs,DataI/O
VCC = 3V, II = –18mA
ControlInputs
Data I/O
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
µ A
µ A
µ A
µ A
µ A
pF
IOZ
IOFF
ICC
50
10
300
—
—
8
(2)
∆ICC
CI
ControlInputs
ControlInputs
CIO(OFF)
VO = 3V or 0 (switch off)
13.5
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
PropagationDelay
S to A or B
0.15
—
0.25
8.8
8.6
8.8
ns
ns
ns
ns
tPD
tEN
tDIS
3
3
1
11.1
10.9
8.7
3
OutputEnableTime
S to A or B
3
OutputDisableTime
S to A or B
2
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
IDT74CBTLV16212
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSEXCHANGESWITCH
TEST CIRCUITS AND WAVEꢀORMS
TESTCONDITIONS
(1)
(2)
VIH
VT
0V
Symbol
VLOAD
VIH
VCC =3.3V±0.3V
VCC =2.5V±0.2V
Unit
V
SAME PHASE
INPUT TRANSITION
6
3
2 x Vcc
Vcc
tPHL
tPHL
tPLH
tPLH
V
V
OH
OUTPUT
V
T
VT
1.5
300
300
50
Vcc / 2
150
V
VOL
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
SWITCH
OPEN
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
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
IDT74CBTLV16212
INDUSTRIALTEMPERATURERANGE
LOW-VOLTAGE24-BITBUSEXCHANGESWITCH
ORDERINGINꢀORMATION
XXX
CBTLV
XX
IDT
XX
Temp. Range
Device Type Package
PV
PA
PF
Shrink Small Outline Package
Thin Shrink Small Outline Package
Thin Very Small Outline Package
16212
74
Low-Voltage 24-Bit Bus Exchange Switch
–40°C to +85°C
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logichelp@idt.com
(408) 654-6459
www.idt.com
5
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