概述
数据手册
替代型号74CBTLV3257QG 概述
LOW-VOLTAGE QUAD 2:1MUX/DEMUX BUS SWITCH 逻辑控制器
74CBTLV3257QG 数据手册
通过下载74CBTLV3257QG数据手册来全面了解它。这个PDF文档包含了所有必要的细节，如产品概述、功能特性、引脚定义、引脚排列图等信息。
PDF下载IDT74CBTLV3257
LOW-VOLTAGE
QUAD 2:1MUX/DEMUX
BUS SWITCH
FEATURES:
DESCRIPTION:
• Functionally equivalent to QS3257
• 5Ω bi-directional switch connection between two ports
• Isolation under power-off conditions
• Over-voltage tolerant
The CBTLV3257 is a quad 2:1 multiplexer/demultiplexer. The low on-
state resistance of the switch allows connections to be made with minimal
propagation delay.
Theselect(S)inputcontrolsthedataflow.Themultiplexers/demultiplexers
are enabled when the output-enable (OE) input is low.
To ensure the high-impedance state during power up or power down,
OE should be tied to VCC through a pullup resistor; the minimum value of
the resistor is determined by the current-sinking capability of the driver.
• 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
APPLICATIONS:
• 3.3V High Speed Bus Switching, Multiplexing, and Bus Isolation
FUNCTIONALBLOCKDIAGRAM
SIMPLIFIEDSCHEMATIC,EACH
SWITCH
1A
2A
SW
1B1
1B2
SW
2B1
2B2
SW
A
B
SW
SW
SW
3A
4A
SW
3B1
3B2
4B1
4B2
SW
FROM ENABLE
CIRCUITRY
S
OE
TheIDTlogoisaregisteredtrademarkofIntegratedDeviceTechnology,Inc.
INDUSTRIAL TEMPERATURE RANGE
DECEMBER2014
1
© 2014 Integrated Device Technology, Inc.
DSC-5744/5
IDT74CBTLV3257
LOW-VOLTAGEQUAD2:1MUX/DEMUXBUSSWITCH
INDUSTRIALTEMPERATURERANGE
ABSOLUTEMAXIMUMRATINGS(1)
PINCONFIGURATION
Symbol
VCC
Description
Max
–0.5 to +4.6
–0.5 to +4.6
128
Unit
V
SupplyVoltage Range
S
1B1
1B2
1A
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VCC
OE
VI
Input Voltage Range
V
Continuous Channel Current
Input Clamp Current, VI/O < 0
Storage Temperature
mA
mA
°C
IIK
–50
4B1
4B2
4A
TSTG
–65 to +150
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.
2B1
2B2
2A
3B1
3B2
3A
GND
QSOP / TSSOP
TOP VIEW
FUNCTIONTABLE(1)
Inputs
OE
L
S
L
Function
A Port = B1 Port
A Port = B2 Port
Disconnect
L
H
X
H
NOTE:
1. H = HIGH Voltage Level
L = LOW Voltage Level
X = Don't Care
OPERATING CHARACTERISTICS, TA = 25°C(1)
Symbol Parameter
Test Conditions
Min.
2.3
1.7
2
Max.
Unit
V
VCC
VIH
SupplyVoltage
3.6
—
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
IDT74CBTLV3257
LOW-VOLTAGEQUAD2:1MUX/DEMUXBUSSWITCH
INDUSTRIALTEMPERATURERANGE
DCELECTRICALCHARACTERISTICSOVEROPERATINGRANGE
FollowingConditionsApplyUnlessOtherwiseSpecified:
Operating Conditions: TA = –40°C to +85°C
Symbol
VIK
Parameter
Control Inputs, Data Inputs
Control Inputs
Test Conditions
Min.
—
Typ.(1)
—
Max.
–1.2
1
Unit
V
VCC = 3V, II = –18mA
II
VCC = 3.6V, VI = VCC or GND
—
—
μA
μA
μA
μA
μA
pF
IOZ
Data I/O
VCC = 3.6V, VO = 0 or 3.6V, switch disabled
VCC = 0, VI or VO = 0 to 3.6V
—
—
20
IOFF
ICC
—
—
50
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
—
—
10
(2)
ΔICC
Control Inputs
Control Inputs
—
—
300
—
CI
—
4
CIO(OFF)
A Port
B Port
VO = 3V or 0, OE = VCC = 3.3V
—
—
13
6
—
—
pF
VCC = 2.3V
Typ. at VCC = 2.5V
VI = 0
IO = 64mA
IO = 24mA
IO = 15mA
IO = 64mA
IO = 24mA
IO = 15mA
—
—
—
—
—
—
5
5
27
5
5
10
8
8
40
7
7
15
(3)
RON
VI = 1.7V
VI = 0
Ω
VCC = 3V
VI = 2.4V
NOTES:
1. Typical values are at VCC = 3.3V, +25°C ambient.
2. The increase in supply current is attributable to each current 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. 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
−
0.15
−
0.25
ns
A to B or B to A
SelectTime
S to A or B
EnableTime
S to B
tSEL
1
1
1
6.1
6.1
4.8
1
1
1
5.3
5.3
4.5
ns
ns
ns
tEN
tDIS
DisableTime
S to B
tEN
OutputEnableTime
1
1
5.6
5.5
1
1
5
ns
ns
OE to A or B
tDIS
OutputDisableTime
5.5
OE to A or B
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
IDT74CBTLV3257
LOW-VOLTAGEQUAD2:1MUX/DEMUXBUSSWITCH
INDUSTRIALTEMPERATURERANGE
TESTCIRCUITSANDWAVEFORMS
TESTCONDITIONS
VIH
VT
0V
SAME PHASE
INPUT TRANSITION
tPHL
tPHL
tPLH
tPLH
VOH
VT
VOL
Symbol
VLOAD
VIH
VCC(1)=3.3V±0.3V
VCC(2)=2.5V±0.2V
Unit
V
OUTPUT
6
3
2 x Vcc
Vcc
V
VIH
VT
0V
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
CONTROL
INPUT
500
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
500
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
tSEL
Switch
VLOAD
GND
Open
Open
tPD
4
IDT74CBTLV3257
LOW-VOLTAGEQUAD2:1MUX/DEMUXBUSSWITCH
INDUSTRIALTEMPERATURERANGE
ORDERINGINFORMATION
CBTLV
Device Type Package
XXX
XX
X
XX
Temp. Range
Blank Tube or Tray
8
Tape and Reel
QG
PGG
Quarter-Size Small Outline Package - Green
Thin Shrink Small Outline Package - Green
3257
74
Low-Voltage Quad 2:1 Mux/Demux Bus Switch
–40°C to +85°C
Datasheet Document History
12/18/2014
Pg. 5
Updated the ordering information by removing non RoHS part and by adding Tape and Reel information.
CORPORATE HEADQUARTERS
6024 Silver Creek Valley Road
San Jose, CA 95138
for SALES:
for Tech Support:
logichelp@idt.com
800-345-7015 or 408-284-8200
fax: 408-284-2775
www.idt.com
5
74CBTLV3257QG 替代型号
| 型号 | 制造商 | 描述 | 替代类型 | 文档 |
| QS3VH257QG | IDT | HIGH BANDWIDTH BUS SWITCH | 完全替代 |
|
| QS3VH257QG8 | IDT | HIGH BANDWIDTH BUS SWITCH | 完全替代 |
|
| 74CBTLV3257QG8 | IDT | LOW-VOLTAGE QUAD 2:1MUX/DEMUX BUS SWITCH | 完全替代 |
|
74CBTLV3257QG 相关器件
| 型号 | 制造商 | 描述 | 价格 | 文档 |
| 74CBTLV3257QG8 | IDT | LOW-VOLTAGE QUAD 2:1MUX/DEMUX BUS SWITCH | 获取价格 |
|
| 74CBTLV3257RGYRG4 | TI | LOW-VOLTAGE 4-BIT 1-OF-2FET MULTIPLEXER/DEMULTIPLEXER | 获取价格 |
|
| 74CBTLV3306 | NEXPERIA | 2-bit bus switch | 获取价格 |
|
| 74CBTLV3306DC | NEXPERIA | 2-bit bus switch | 获取价格 |
|
| 74CBTLV3306GT | NEXPERIA | 2-bit bus switch | 获取价格 |
|
| 74CBTLV3383DBQRG4 | TI | CBTLV/3B SERIES, 5-BIT EXCHANGER, TRUE OUTPUT, PDSO24, GREEN, PLASTIC, QSOP-24 | 获取价格 |
|
| 74CBTLV3384 | NEXPERIA | 10-bit bus switch with 5-bit output enables | 获取价格 |
|
| 74CBTLV3384 | RENESAS | Low-Voltage 10-Bit Bus Switch | 获取价格 |
|
| 74CBTLV3384BQ | NEXPERIA | 10-bit bus switch with 5-bit output enables | 获取价格 |
|
| 74CBTLV3384DBQRE4 | TI | LOW-VOLTAGE 10-BIT FET BUS SWITCH | 获取价格 |
|
74CBTLV3257QG 相关文章
Bourns 密封通孔金属陶瓷微调电位计产品选型手册(英文版)
- 2024-09-20
- 5
Bourns 精密环境传感器产品选型手册(英文版)
- 2024-09-20
- 8
Bourns POWrTher 负温度系数(NTC)热敏电阻手册 (英文版)
- 2024-09-20
- 8
Bourns GMOV 混合过压保护组件产品选型手册(英文版)
- 2024-09-20
- 6
