SN74AVCBH164245 Series

16-Bit Dual-Supply Bus Xcvr w/ Config. Voltage Xlation and 3-State Outputs

Catalog

16-Bit Dual-Supply Bus Xcvr w/ Config. Voltage Xlation and 3-State Outputs

Part	Channel Type	Mounting Type	Voltage - VCCB [Min]	Voltage - VCCB [Max]	Output Type	Channels per Circuit	Translator Type	Number of Circuits	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Voltage - VCCA [Max]	Voltage - VCCA [Min]	Package / Case	Package / Case	Package / Case [custom]	Features
Texas Instruments 74AVCBH164245ZQLR	Bidirectional	Surface Mount	1.4 V	3.6 V	Non-Inverted Tri-State	8	Voltage Level	2	85 °C	-40 °C	56-BGA Microstar Junior (7x4.5)	3.6 V	1.4 V	56-VFBGA
Texas Instruments SN74AVCBH164245GR	Bidirectional	Surface Mount	1.4 V	3.6 V	Non-Inverted Tri-State	8	Voltage Level	2	85 °C	-40 °C	48-TSSOP	3.6 V	1.4 V	48-TFSOP	0.24 in	6.1 mm	Over Voltage Protection
Texas Instruments 74AVCBH164245GRG4	Bidirectional	Surface Mount	1.4 V	3.6 V	Non-Inverted Tri-State	8	Voltage Level	2	85 °C	-40 °C	48-TSSOP	3.6 V	1.4 V	48-TFSOP	0.24 in	6.1 mm
Texas Instruments SN74AVCBH164245KR	Bidirectional	Surface Mount	1.4 V	3.6 V	Non-Inverted Tri-State	8	Voltage Level	2	85 °C	-40 °C	56-BGA Microstar Junior (7x4.5)	3.6 V	1.4 V	56-VFBGA			Over Voltage Protection

Catalog

16-Bit Dual-Supply Bus Xcvr w/ Config. Voltage Xlation and 3-State Outputs

Key Features

• Member of the Texas Instruments Widebus™ FamilyDynamic Output Control (DOC™) Circuitry Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed DegradationDynamic Drive Capability Is Equivalent to Standard Outputs With IOHand IOLof ±24 mA at 2.5-V VCCControl Inputs VIH/VILLevels are Referenced to VCCBVoltageIf Either VCCInput Is at GND, Both Ports Are in the High-Impedance StateOvervoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data CommunicationsIoffSupports Partial-Power-Down Mode OperationFully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.4-V to 3.6-V Power Supply RangeBus Hold on Data Inputs Eliminates the Need for External Pullup/ Pulldown ResistorsLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Widebus, DOC are trademarks of Texas Instruments.Member of the Texas Instruments Widebus™ FamilyDynamic Output Control (DOC™) Circuitry Dynamically Changes Output Impedance, Resulting in Noise Reduction Without Speed DegradationDynamic Drive Capability Is Equivalent to Standard Outputs With IOHand IOLof ±24 mA at 2.5-V VCCControl Inputs VIH/VILLevels are Referenced to VCCBVoltageIf Either VCCInput Is at GND, Both Ports Are in the High-Impedance StateOvervoltage-Tolerant Inputs/Outputs Allow Mixed-Voltage-Mode Data CommunicationsIoffSupports Partial-Power-Down Mode OperationFully Configurable Dual-Rail Design Allows Each Port to Operate Over the Full 1.4-V to 3.6-V Power Supply RangeBus Hold on Data Inputs Eliminates the Need for External Pullup/ Pulldown ResistorsLatch-Up Performance Exceeds 100 mA Per JESD 78, Class IIESD Protection Exceeds JESD 222000-V Human-Body Model (A114-A)200-V Machine Model (A115-A)1000-V Charged-Device Model (C101)Widebus, DOC are trademarks of Texas Instruments.

Description

This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A-port is designed to track VCCA. VCCAaccepts any supply voltage from 1.4 V to 3.6 V. The B-port is designed to track VCCB. VCCBaccepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVCBH164245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are effectively isolated. The SN74AVCBH164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCBthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. If either VCCinput is at GND, both ports are in the high-impedance state. This 16-bit (dual-octal) noninverting bus transceiver uses two separate configurable power-supply rails. The A-port is designed to track VCCA. VCCAaccepts any supply voltage from 1.4 V to 3.6 V. The B-port is designed to track VCCB. VCCBaccepts any supply voltage from 1.4 V to 3.6 V. This allows for universal low-voltage bidirectional translation between any of the 1.5-V, 1.8-V, 2.5-V, and 3.3-V voltage nodes. The SN74AVCBH164245 is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the outputs so the buses are effectively isolated. The SN74AVCBH164245 is designed so that the control pins (1DIR, 2DIR, 1OE, and 2OE) are supplied by VCCB. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended. To ensure the high-impedance state during power up or power down,OEshould be tied to VCCBthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. This device is fully specified for partial-power-down applications using Ioff. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the device when it is powered down. If either VCCinput is at GND, both ports are in the high-impedance state.