IDT74CBTLV6800QG [IDT]
LOW-VOLTAGE 10-BIT BUS SWITCH WITH PRECHARGED OUTPUTS; 具有预充电输出低电压10位总线开关型号: | IDT74CBTLV6800QG |
厂家: | INTEGRATED DEVICE TECHNOLOGY |
描述: | LOW-VOLTAGE 10-BIT BUS SWITCH WITH PRECHARGED OUTPUTS |
文件: | 总5页 (文件大小:69K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
IDT74CBTLV6800
LOW-VOLTAGE 10-BIT
BUS SWITCH WITH
PRECHARGED OUTPUTS
FEATURES:
DESCRIPTION:
• Functionally equivalent to QS3800
• 5Ω A/B bi-directional switch
TheCBTLV6800provides 10-bits ofhigh-speedbus switchingwithlow
on-state resistance of the switch allowing connections to be made with
minimal propagation delay. The device also precharges the B port to a
user-selectable bias voltage (BIASV)tominimize live-insertionnoise.
TheCBTLV6800is organizedas asingle10-bitbus switchwithasingle
output-enable (OE)input.WhenOE is low,the10-bitbus switchis onand
portAis connectedtoportB. WhenOE is high, the switchis open, anda
highimpedancestateexistsbetweenthetwoports,andportBisprecharged
toBIASVthroughthe equivalentofa 10-kΩ 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 QSOP and TSSOP packages
Toensure the high-impedance state duringpoweruporpowerdown,
OE shouldbe tiedtoVCCthrougha pullupresistor;the minimumvalue of
the resistoris determinedbythe current-sinkingcapabilityofthe driver.
APPLICATIONS:
• 3.3V High Speed Bus Switching and Bus Isolation
FUNCTIONALBLOCKDIAGRAM
SIMPLIFIED SCHEMATIC, EACH SWITCH
13
23
BIASV
B1
2
SW
A1
A
B
14
11
SW
B10
A10
1
OE
OE
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
JUNE 2006
1
© 2006 Integrated Device Technology, Inc.
DSC-5739/4
IDT74CBTLV6800
LOW-VOLTAGE10-BITBUSSWITCHWITHPRECHARGEDOUTPUTS
INDUSTRIALTEMPERATURERANGE
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
VCC
Description
Max
–0.5 to +4.6
–0.5 to +4.6
128
Unit
V
SupplyVoltage Range
VI
Input Voltage Range
V
24
1
2
OE
A1
VCC
B1
Continuous Channel Current
Input Clamp Current, VI/O < 0
Storage Temperature
mA
mA
° C
23
22
21
20
19
18
17
16
IIK
–50
TSTG
–65 to +150
3
A2
B2
NOTE:
4
B3
A3
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.
5
B4
A4
B5
6
A5
B6
7
A6
B7
8
A7
B8
A8
9
B9
A9
10
15
14
13
FUNCTIONTABLE(1)
B10
BIASV
A10
GND
11
12
Input OE
Inputs/Outputs
L
A Port = B Port
H
A Port = Z
B Port = BIASV
QSOP / TSSOP
TOP VIEW
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
Z = High-Impedance
OPERATING CHARACTERISTICS, TA = 25°C(1)
Symbol Parameter
Test Conditions
Min.
2.3
1.3
1.7
2
Max.
Unit
V
VCC
SupplyVoltage
3.6
VCC
—
BIASV BiasVoltage
V
VIH
VIL
TA
High-LevelControlInputVoltage
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
—
Low-LevelControlInputVoltage
OperatingFree-AirTemperature
—
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
IDT74CBTLV6800
LOW-VOLTAGE10-BITBUSSWITCHWITHPRECHARGEDOUTPUTS
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
OperatingConditions:TA =–40°Cto+85°C
Symbol
Parameter
Control Inputs, Data Inputs
Control Inputs
Test Conditions
VCC = 3V, II = –18mA
Min.
—
Typ.
—
Max.
–1.2
1
Unit
V
VIK
II
VCC = 3.6V, VI = VCC or GND
—
—
µA
IOZ
Data I/O
VCC = 3.6V, VO = 0 or 3.6V, switch disabled
VCC = 0, VI or VO = 0 to 3.6V
—
—
—
—
—
20
50
µ A
µ A
mA
IOFF
|IO|
ICC
VCC = 3V, BIASV = 2.4V, VO = 0, OE = VCC
0.25
—
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
—
—
—
—
—
4
10
300
—
µ A
µ A
pF
(1)
ΔICC
Control Inputs
Control Inputs
CI
CIO(OFF)
VO = 3V or 0, switch OFF, BIASV = Open, OE = VCC
—
—
—
—
—
—
—
7
5
—
8
pF
VCC = 2.3V
VI = 0
II = 64mA
II = 24mA
II = 15mA
II = 64mA
II = 24mA
II = 15mA
Typ. at VCC = 2.5V
5
8
(2)
RON
VI = 1.7V
VI = 0
27
5
40
7
Ω
VCC = 3V
5
7
VI = 2.4V
10
15
NOTES:
1. The increase in supply current is attributable to each current that is at the specified voltage level rather than VCC or GND.
2. This is measured by the voltage drop between the A and B terminals at the indicated current through the switch. On-state resistance is determined by the lower of the voltages
of the two (A or B ) terminals.
SWITCHINGCHARACTERISTICS
VCC = 2.5V ± 0.2V
Min.
VCC = 3.3V ± 0.3V
Max.
Symbol Parameter
Max.
Min.
Unit
(1)
tPD
PropagationDelay
−
1
1
0.15
−
0.25
ns
A to B or B to A
BIASV = 3V or GND
OE to A or B
tPZH
tPZL
tPHZ
tPLZ
4.8
5.6
1
1
4.5
ns
ns
BIASV = 3V or GND
OE to A or B
5.5
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 driven by an ideal voltage source
(zero output impedance).
3
IDT74CBTLV6800
LOW-VOLTAGE10-BITBUSSWITCHWITHPRECHARGEDOUTPUTS
INDUSTRIALTEMPERATURERANGE
VIH
VT
0V
TESTCIRCUITSANDWAVEFORMS
TESTCONDITIONS
SAME PHASE
INPUT TRANSITION
tPHL
tPHL
tPLH
tPLH
VOH
VT
VOL
OUTPUT
Symbol
VLOAD
VIH
VCC(1)=3.3V±0.3V
VCC(2)=2.5V±0.2V
Unit
V
6
3
2 x Vcc
Vcc
VIH
VT
0V
V
OPPOSITE PHASE
INPUT TRANSITION
VT
1.5
300
300
50
Vcc / 2
150
V
VLZ
mV
mV
pF
VHZ
150
Propagation Delay
CL
30
VLOAD
Open
GND
VCC
DISABLE
ENABLE
VIH
VT
0V
CONTROL
INPUT
500Ω
tPZL
tPLZ
VIN
VOUT
(1, 2)
Pulse
VLOAD/2
D.U.T.
VLOAD/2
VOL + VLZ
VOL
OUTPUT
NORMALLY
LOW
Generator
SWITCH
CLOSED
VT
500Ω
tPHZ
RT
tPZH
CL
VOH
VOH -VHZ
OUTPUT
NORMALLY
HIGH
SWITCH
OPEN
VT
0V
0V
Test Circuits for All Outputs
Enable and Disable Times
DEFINITIONS:
CL = Load capacitance: includes jig and probe capacitance.
RT = Termination resistance: should be equal to ZOUT of the Pulse Generator.
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 ≤ 2.5ns.
SWITCHPOSITION
Test
tPLZ/tPZL
tPHZ/tPZH
tPD
Switch
VLOAD
GND
Open
4
IDT74CBTLV6800
LOW-VOLTAGE10-BITBUSSWITCHWITHPRECHARGEDOUTPUTS
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
CBTLV
XXX
XX
IDT
XX
Temp. Range
Device Type Package
Q
Quarter-size Small Outline Package
QG
PG
QSOP - Green
Thin Shrink Small Outline Package
PGG TSSOP - Green
6800 Low-Voltage 10-Bit Bus Switch with Precharged Outputs
74
–40°C to +85°C
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5
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