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74CB3T16212 Series

3.3-V, crosspoint/exchange, 24-channel FET bus switch with level shifter

Manufacturer: Texas Instruments

Catalog(2 parts)

PartIndependent CircuitsTypeMounting TypeVoltage - SupplyVoltage - SupplyCircuitCircuitCircuitVoltage Supply SourcePackage / CasePackage / CasePackage / CaseOperating TemperatureOperating TemperatureSupplier Device Package
Texas Instruments
SN74CB3T16212DGVR
Bus FET Exchange Switch 12 x 2:2 56-TVSOP
1 ul
Bus FET Exchange Switch
Surface Mount
3.5999999046325684 V
2.299999952316284 V
2 ul
12 ul
2 ul
Single Supply
0.004399999976158142 m
56-TFSOP
0.004394200164824724 m
-40 °C
85 °C
56-TVSOP
Texas Instruments
SN74CB3T16212DGGR
Bus FET Exchange Switch 12 x 2:2 56-TSSOP
1 ul
Bus FET Exchange Switch
Surface Mount
3.5999999046325684 V
2.299999952316284 V
2 ul
12 ul
2 ul
Single Supply
0.006099999882280827 m
56-TFSOP
0.006095999851822853 m
-40 °C
85 °C
56-TSSOP

Key Features

Member of the Texas Instruments Widebus™ FamilyOutput Voltage Translation Tracks VCCSupports Mixed-Mode Signal Operation on All Data I/O Ports5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC5-V-Tolerant I/Os With Device Powered Up or Powered DownBidirectional Data Flow, With Near-Zero Propagation DelayLow ON-State Resistance (ron) Characteristics (ron= 5Typ)Low Input/Output Capacitance Minimizes Loading (Cio(OFF)= 9 pF Typ)Data and Control Inputs Provide Undershoot Clamp DiodesLow Power Consumption (ICC= 70 µA Max)VCCOperating Range From 2.3 V to 3.6 VData 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 OutputsIoffSupports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 250 mA Per JESD 17ESD Performance Tested Per JESD 222000-V Human-Body Model (A114-B, Class II)1000-V Charged-Device Model (C101)Supports Digital Applications: Level Translation, PCI Interface, USB Interface, Memory Interleaving, and Bus IsolationIdeal for Low-Power Portable EquipmentWidebus is a trademark of Texas Instruments.Member of the Texas Instruments Widebus™ FamilyOutput Voltage Translation Tracks VCCSupports Mixed-Mode Signal Operation on All Data I/O Ports5-V Input Down to 3.3-V Output Level Shift With 3.3-V VCC5-V/3.3-V Input Down to 2.5-V Output Level Shift With 2.5-V VCC5-V-Tolerant I/Os With Device Powered Up or Powered DownBidirectional Data Flow, With Near-Zero Propagation DelayLow ON-State Resistance (ron) Characteristics (ron= 5Typ)Low Input/Output Capacitance Minimizes Loading (Cio(OFF)= 9 pF Typ)Data and Control Inputs Provide Undershoot Clamp DiodesLow Power Consumption (ICC= 70 µA Max)VCCOperating Range From 2.3 V to 3.6 VData 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 OutputsIoffSupports Partial-Power-Down Mode OperationLatch-Up Performance Exceeds 250 mA Per JESD 17ESD Performance Tested Per JESD 222000-V Human-Body Model (A114-B, Class II)1000-V Charged-Device Model (C101)Supports Digital Applications: Level Translation, PCI Interface, USB Interface, Memory Interleaving, and Bus IsolationIdeal for Low-Power Portable EquipmentWidebus is a trademark of Texas Instruments.

Description

AI
The SN74CB3T16212 is a high-speed TTL-compatible FET bus-exchange switch, with low ON-state resistance (ron), 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 VCC. The SN74CB3T16212 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 Figure 1). The SN74CB3T16212 operates as a 24-bit bus switch or as a 12-bit bus exchange that provides data exchanging between four signal ports. The select (S0, S1, S2) inputs control the data path of the bus-exchange switch. When the bus-exchange switch is ON, the A port is connected to the B port, allowing bidirectional data flow between ports. When the bus-exchange switch is OFF, a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Iofffeature 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, each select input should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. The SN74CB3T16212 is a high-speed TTL-compatible FET bus-exchange switch, with low ON-state resistance (ron), 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 VCC. The SN74CB3T16212 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 Figure 1). The SN74CB3T16212 operates as a 24-bit bus switch or as a 12-bit bus exchange that provides data exchanging between four signal ports. The select (S0, S1, S2) inputs control the data path of the bus-exchange switch. When the bus-exchange switch is ON, the A port is connected to the B port, allowing bidirectional data flow between ports. When the bus-exchange switch is OFF, a high-impedance state exists between the A and B ports. This device is fully specified for partial-power-down applications using Ioff. The Iofffeature 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, each select input should be tied to GND through a pulldown resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.