SN3257-Q1

現行

車用 5V、2:1 (SPDT)、4 通道類比開關、1.8V 相容邏輯、斷電保護

立即訂購

產品規格表

document-pdfAcrobat SN3257-Q1 Automotive 5-V, Low Propagation Delay, 2:1 (SPDT),4-Channel Switch With 1.8 V Logic datasheet (Rev. D) (英文) PDF | HTML

SN3257-Q1

現行

產品規格表

立即訂購

產品詳細資料

Protocols

A2B, Analog, I2C, I2S, JTAG, RGMII, SPI, TDM, UART

Configuration

2:1 SPDT

Number of channels

4

Bandwidth (MHz)

2000

Ron (typ) (mΩ)

2000

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Supply current (typ) (µA)

7.5

ESD HBM (typ) (kV)

2

Operating temperature range (°C)

-40 to 125

Input/output continuous current (max) (mA)

25

COFF (typ) (pF)

4

CON (typ) (pF)

8

Off isolation (typ) (dB)

-90

OFF-state leakage current (max) (µA)

0.9

Ron (max) (mΩ)

5000

Ron channel match (max) (Ω)

0.8

Turnoff time (disable) (max) (ns)

95

Turnon time (enable) (max) (ns)

35000

VIH (min) (V)

1.2

VIL (max) (V)

0.45

Rating

Automotive

Protocols

A2B, Analog, I2C, I2S, JTAG, RGMII, SPI, TDM, UART

Configuration

2:1 SPDT

Number of channels

4

Bandwidth (MHz)

2000

Ron (typ) (mΩ)

2000

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Supply current (typ) (µA)

7.5

ESD HBM (typ) (kV)

2

Operating temperature range (°C)

-40 to 125

Input/output continuous current (max) (mA)

25

COFF (typ) (pF)

4

CON (typ) (pF)

8

Off isolation (typ) (dB)

-90

OFF-state leakage current (max) (µA)

0.9

Ron (max) (mΩ)

5000

Ron channel match (max) (Ω)

0.8

Turnoff time (disable) (max) (ns)

95

Turnon time (enable) (max) (ns)

35000

VIH (min) (V)

1.2

VIL (max) (V)

0.45

Rating

Automotive

SOT-23-THN (DYY)

16

8.4 mm² (4.2 mm × 2 mm)

TSSOP (PW)

16

32 mm² (5 mm × 6.4 mm)

Functional safety-capable
- Documentation available to aid functional safety system design
AEC-Q100 qualified for automotive application
- Temperature grade 1: -40°C to +125°C, T_A
Wide supply range: 1.5 V to 5.5 V
Low propagation delay: 78 ps
Low on-resistance: 5 Ω
High bandwidth: 2 GHz
Bidirectional signal path
Supports input voltage beyond supply
1.8 V logic compatible
Integrated pull down resistor on logic pins
Fail-safe logic
Powered-off protection up to 3.6 V signals

Functional safety-capable
- Documentation available to aid functional safety system design
AEC-Q100 qualified for automotive application
- Temperature grade 1: -40°C to +125°C, T_A
Wide supply range: 1.5 V to 5.5 V
Low propagation delay: 78 ps
Low on-resistance: 5 Ω
High bandwidth: 2 GHz
Bidirectional signal path
Supports input voltage beyond supply
1.8 V logic compatible
Integrated pull down resistor on logic pins
Fail-safe logic
Powered-off protection up to 3.6 V signals

The SN3257-Q1 is an automotive grade complementary metal-oxide semiconductor (CMOS) switch that supports high speed signals with low propagation delay. The SN3257-Q1 offers a 2:1 (SPDT) switch configuration with 4-channels making it ideal for multi-lane protocols such as SPI and I2S. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals above supply up to V_DD x 2, with a maximum input and output voltage of 5.5 V.

The SN3257-Q1 has an active low EN pin that is used to enable and disable all channels simultaneously. When the EN pin is LOW, one of the two switch paths is selected based on the state of SEL pin.

Powered-off protection up to 3.6 V on the signal path of the SN3257-Q1 provides isolation when the supply voltage is removed (V_DD = 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. Both logic control inputs have 1.8 V logic compatible thresholds, ensuring both TTL and CMOS logic compatibility. Integrated pull down resistor on the logic pins removes external components to reduce system size and cost.

The SN3257-Q1 is an automotive grade complementary metal-oxide semiconductor (CMOS) switch that supports high speed signals with low propagation delay. The SN3257-Q1 offers a 2:1 (SPDT) switch configuration with 4-channels making it ideal for multi-lane protocols such as SPI and I2S. The device supports bidirectional analog and digital signals on the source (SxA, SxB) and drain (Dx) pins and can pass signals above supply up to V_DD x 2, with a maximum input and output voltage of 5.5 V.

The SN3257-Q1 has an active low EN pin that is used to enable and disable all channels simultaneously. When the EN pin is LOW, one of the two switch paths is selected based on the state of SEL pin.

Powered-off protection up to 3.6 V on the signal path of the SN3257-Q1 provides isolation when the supply voltage is removed (V_DD = 0 V). Without this protection feature, switches can back-power the supply rail through an internal ESD diode and cause potential damage to the system.

Fail-safe logic circuitry allows voltages on the logic control pins to be applied before the supply pin, protecting the device from potential damage. Both logic control inputs have 1.8 V logic compatible thresholds, ensuring both TTL and CMOS logic compatibility. Integrated pull down resistor on the logic pins removes external components to reduce system size and cost.

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