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SN74CBT3245C是一款高速TTL兼容FET总线开关,具有低导通电阻(r on ),允许用于最小传播延迟。 SN74CBT3245C的A和B端口上的有源下冲保护电路通过检测下冲事件并确保开关保持在正常的OFF状态,为低至2 V的下冲提供保护。
SN74CBT3245C被组织为具有单个输出使能(OE)\输入的8位总线开关。当OE \为低电平时,总线开关接通,A端口连接到B端口,允许端口之间的双向数据流。当OE \为高电平时,总线开关关闭,A和B端口之间存在高阻态。
该器件完全适用于使用I 的部分断电应用关子>。 I off 功能可确保损坏的电流在断电时不会回流通过器件。
为确保上电或断电期间的高阻态,OE \应通过上拉电阻连接到V CC ;电阻的最小值由驱动器的电流吸收能力决定。
Configuration |
Number of Channels (#) |
Power Supply Type |
Vss (Min) (V) |
Vss (Max) (V) |
Vdd (Min) (V) |
Vdd (Max) (V) |
Ron (Typ) (Ohms) |
Bandwidth (MHz) |
Rating |
Operating Temperature Range (C) |
Package Size: mm2:W x L (PKG) |
Package Group |
Supply Range (Max) |
Ron (Max) (Ohms) |
Input/Output Continuous Current (Max) (mA) |
Supply Current (Typ) (uA) |
Supply Current (Max) (uA) |
Features |
OFF-state leakage current (Max) (µA) |
ON-state leakage current (Max) (µA) |
Input/Output ON-state Capacitance (Typ) (pF) |
Input/Output OFF-state Capacitance (Typ) (pF) |
ESD Charged Device Model (kV) |
ESD HBM (kV) |
VIL (Max) (V) |
VIH (Min) (V) |
SN74CBT3245C | SN74CB3Q3245 | SN74CBT3245A | SN74CBTLV3245A |
---|---|---|---|
1:1 SPST | 1:1 SPST | 1:1 SPST | 1:1 SPST |
8 | 8 | 8 | 8 |
Single | Single | Single | Single |
N/A | N/A | N/A | N/A |
N/A | N/A | N/A | N/A |
4 | 2.3 | 4 | 2.3 |
5.5 | 3.6 | 5.5 | 3.6 |
3 | 4 | 5 | 5 |
200 | 500 | 200 | 200 |
Catalog | Catalog | Catalog | Catalog |
-40 to 85 | -40 to 85 | -40 to 85 | -40 to 85 |
20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20SSOP: 52 mm2: 6 x 8.65(SSOP) 20SSOP: 56 mm2: 7.8 x 7.2(SSOP) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) 20TVSOP: 32 mm2: 6.4 x 5(TVSOP) 20VQFN: 16 mm2: 3.5 x 4.5(VQFN) | 20BGA MICROSTAR JUNIOR: 12 mm2: 3 x 4(BGA MICROSTAR JUNIOR) 20SSOP: 52 mm2: 6 x 8.65(SSOP) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) 20TVSOP: 32 mm2: 6.4 x 5(TVSOP) 20VQFN: 16 mm2: 3.5 x 4.5(VQFN) | 20BGA MICROSTAR JUNIOR: 12 mm2: 3 x 4(BGA MICROSTAR JUNIOR) 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20SSOP: 52 mm2: 6 x 8.65(SSOP) 20SSOP: 56 mm2: 7.8 x 7.2(SSOP) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) 20TVSOP: 32 mm2: 6.4 x 5(TVSOP) 20VQFN: 16 mm2: 3.5 x 4.5(VQFN) | 20BGA MICROSTAR JUNIOR: 12 mm2: 3 x 4(BGA MICROSTAR JUNIOR) 20SOIC: 132 mm2: 10.3 x 12.8(SOIC) 20SSOP: 52 mm2: 6 x 8.65(SSOP) 20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP) 20TVSOP: 32 mm2: 6.4 x 5(TVSOP) 20VQFN: 16 mm2: 3.5 x 4.5(VQFN) |
SOIC SSOP SSOP TSSOP TVSOP VQFN | BGA MICROSTAR JUNIOR SSOP TSSOP TVSOP VQFN | BGA MICROSTAR JUNIOR SOIC SSOP SSOP TSSOP TVSOP VQFN | BGA MICROSTAR JUNIOR SOIC SSOP TSSOP TVSOP VQFN |
5.5 | 3.6 | 5.5 | 3.6 |
12 | 9 | 15 | 40 |
128 | 64 | 128 | 128 |
1 | |||
3 | 4 | 3 | 10 |
Powered off protection -2V undershoot protection | Powered off protection | Powered off protection | |
10 | 1 | 5 | 60 |
5 | 60 | ||
14 | 9 | ||
5.5 | 3.5 | 4 | 9 |
1 | 1 | ||
2 | 2 | 2 | |
0.8 | 0.8 | 0.8 | 0.8 |
2 | 1.7 | 2 | 2 |