SN74CB3T3125

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4-kanaliger FET-Busschalter, 3,3 V, 1:1 (SPST) mit Pegelwandler

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Datenblatt

document-pdfAcrobat SN74CB3T3125 Quadruple FET Bus Switch 2.5-V, 3.3-V Low-Voltage Bus Switch with 5-V-Tolerant Level Shifter datasheet (Rev. C) (Englisch) PDF | HTML

SN74CB3T3125

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Protocols

Analog

Configuration

1:1 SPST

Number of channels

4

Bandwidth (MHz)

100

Ron (typ) (mΩ)

5000

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Operating temperature range (°C)

-40 to 85

ESD CDM (kV)

1

Input/output continuous current (max) (mA)

128

COFF (typ) (pF)

4.5

CON (typ) (pF)

4

OFF-state leakage current (max) (µA)

10

Ron (max) (mΩ)

8000

VIH (min) (V)

1.7

VIL (max) (V)

0.8

Rating

Catalog

Protocols

Analog

Configuration

1:1 SPST

Number of channels

4

Bandwidth (MHz)

100

Ron (typ) (mΩ)

5000

Input/output voltage (min) (V)

0

Input/output voltage (max) (V)

5.5

Operating temperature range (°C)

-40 to 85

ESD CDM (kV)

1

Input/output continuous current (max) (mA)

128

COFF (typ) (pF)

4.5

CON (typ) (pF)

4

OFF-state leakage current (max) (µA)

10

Ron (max) (mΩ)

8000

VIH (min) (V)

1.7

VIL (max) (V)

0.8

Rating

Catalog

VQFN (RGY)

14

12.25 mm² (3.5 mm × 3.5 mm)

TSSOP (PW)

14

32 mm² (5 mm × 6.4 mm)

TVSOP (DGV)

14

23.04 mm² (3.6 mm × 6.4 mm)

Output Voltage Translation Tracks V_CC
Supports Mixed-Mode Signal Operation On All Data I/O Ports
- 5-V Input Down to 3.3-V Output-Level Shift With 3.3-V V_CC
- 5-V/3.3-V Input Down to 2.5-V Output-Level Shift With 2.5-V V_CC
5-V-Tolerant I/Os With Device Powered Up or Powered Down
Bidirectional Data Flow, With Near-Zero Propagation Delay
Low ON-State Resistance (r_on) Characteristics
(r_on= 5 Ω Typical)
Low Input/Output Capacitance Minimizes Loading
(C_io(OFF) = 4.5 pF Typical)
Data and Control Inputs Provide Undershoot Clamp Diodes
Low Power Consumption (I_CC = 20 µA Max)
V_CC Operating Range From 2.3 V to 3.6 V
Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model
  (A114-B, Class II)
- 1000-V Charged-Device Model (C101)

Output Voltage Translation Tracks V_CC
Supports Mixed-Mode Signal Operation On All Data I/O Ports
- 5-V Input Down to 3.3-V Output-Level Shift With 3.3-V V_CC
- 5-V/3.3-V Input Down to 2.5-V Output-Level Shift With 2.5-V V_CC
5-V-Tolerant I/Os With Device Powered Up or Powered Down
Bidirectional Data Flow, With Near-Zero Propagation Delay
Low ON-State Resistance (r_on) Characteristics
(r_on= 5 Ω Typical)
Low Input/Output Capacitance Minimizes Loading
(C_io(OFF) = 4.5 pF Typical)
Data and Control Inputs Provide Undershoot Clamp Diodes
Low Power Consumption (I_CC = 20 µA Max)
V_CC Operating Range From 2.3 V to 3.6 V
Data I/Os Support 0- to 5-V Signaling Levels (0.8 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3.3 V, 5 V)
Control Inputs Can Be Driven by TTL or 5-V/3.3-V CMOS Outputs
I_off Supports Partial-Power-Down Mode Operation
Latch-Up Performance Exceeds 250 mA Per JESD 17
ESD Performance Tested Per JESD 22
- 2000-V Human-Body Model
  (A114-B, Class II)
- 1000-V Charged-Device Model (C101)

The SN74CB3T3125 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (r_on), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks V_CC. The SN74CB3T3125 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Typical DC Voltage-Translation Characteristics).

The SN74CB3T3125 is organized as four 1-bit bus switches with separate output-enable (1OE, 2OE, 3OE, 4OE) inputs. It can be used as four 1-bit bus switches or as one 4-bit bus switch. When OE is low, the associated 1-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 1-bit bus switch is OFF, and the high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using I_off. The I_off feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

The SN74CB3T3125 is a high-speed TTL-compatible FET bus switch with low ON-state resistance (r_on), allowing for minimal propagation delay. The device fully supports mixed-mode signal operation on all data I/O ports by providing voltage translation that tracks V_CC. The SN74CB3T3125 supports systems using 5-V TTL, 3.3-V LVTTL, and 2.5-V CMOS switching standards, as well as user-defined switching levels (see Typical DC Voltage-Translation Characteristics).

The SN74CB3T3125 is organized as four 1-bit bus switches with separate output-enable (1OE, 2OE, 3OE, 4OE) inputs. It can be used as four 1-bit bus switches or as one 4-bit bus switch. When OE is low, the associated 1-bit bus switch is ON, and the A port is connected to the B port, allowing bidirectional data flow between ports. When OE is high, the associated 1-bit bus switch is OFF, and the high-impedance state exists between the A and B ports.

This device is fully specified for partial-power-down applications using I_off. The I_off feature ensures that damaging current will not backflow through the device when it is powered down. The device has isolation during power off.

To ensure the high-impedance state during power up or power down, OE should be tied to V_CC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

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Top-Dokumentation	Typ	Titel	Format-Optionen	Datum
*	Datenblatt	SN74CB3T3125 Quadruple FET Bus Switch 2.5-V, 3.3-V Low-Voltage Bus Switch with 5-V-Tolerant Level Shifter datasheet (Rev. C)	PDF \| HTML	20.12.2018
	Anwendungshinweis	Selecting the Correct Texas Instruments Signal Switch (Rev. E)	PDF \| HTML	02.06.2022
	Anwendungshinweis	Multiplexers and Signal Switches Glossary (Rev. B)	PDF \| HTML	01.12.2021
	Application brief	Eliminate Power Sequencing with Powered-off Protection Signal Switches (Rev. C)	PDF \| HTML	06.01.2021

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