SN74LVTH16952 Series

3.3 V ABT 16-Bit Registered Transceivers With 3-State Outputs

Catalog

3.3 V ABT 16-Bit Registered Transceivers With 3-State Outputs

Part	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Number of Elements	Number of Bits per Element	Voltage - Supply [Min]	Voltage - Supply [Max]	Output Type	Package / Case	Package / Case	Package / Case	Mounting Type	Current - Output High, Low [custom]	Current - Output High, Low [custom]
Texas Instruments SN74LVTH16952DL	56-SSOP	85 °C	-40 °C	2	8	2.7 V	3.6 V	3-State	0.295 in	56-BSSOP	7.5 mm	Surface Mount	64 mA	32 mA
Texas Instruments SN74LVTH16952DLG4	56-SSOP	85 °C	-40 °C	2	8	2.7 V	3.6 V	3-State	0.295 in	56-BSSOP	7.5 mm	Surface Mount	64 mA	32 mA
Texas Instruments SN74LVTH16952DGGR	56-TSSOP	85 °C	-40 °C	2	8	2.7 V	3.6 V	3-State	0.24 in	56-TFSOP	6.1 mm	Surface Mount	64 mA	32 mA
Texas Instruments SN74LVTH16952DLR	56-SSOP	85 °C	-40 °C	2	8	2.7 V	3.6 V	3-State	0.295 in	56-BSSOP	7.5 mm	Surface Mount	64 mA	32 mA

Catalog

3.3 V ABT 16-Bit Registered Transceivers With 3-State Outputs

Key Features

• Members of the Texas InstrumentsWidebusTMFamilyState-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power DissipationSupport Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)Support Unregulated Battery Operation Down to 2.7 VTypical VOLP(Output Ground Bounce) <0.8 V at VCC= 3.3 V, TA= 25°CIoffand Power-Up 3-State Support Hot InsertionBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsDistributed VCCand GND Pins Minimize High-Speed Switching NoiseFlow-Through Architecture Optimizes PCB LayoutLatch-Up Performance Exceeds 500 mA Per JESD 17ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)Package Options Include Plastic Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) PackageWidebus is a trademark of Texas Instruments.Members of the Texas InstrumentsWidebusTMFamilyState-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static-Power DissipationSupport Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)Support Unregulated Battery Operation Down to 2.7 VTypical VOLP(Output Ground Bounce) <0.8 V at VCC= 3.3 V, TA= 25°CIoffand Power-Up 3-State Support Hot InsertionBus Hold on Data Inputs Eliminates the Need for External Pullup/Pulldown ResistorsDistributed VCCand GND Pins Minimize High-Speed Switching NoiseFlow-Through Architecture Optimizes PCB LayoutLatch-Up Performance Exceeds 500 mA Per JESD 17ESD Protection Exceeds 2000 V Per MIL-STD-883, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)Package Options Include Plastic Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) PackageWidebus is a trademark of Texas Instruments.

Description

The 'LVTH16952 devices are 16-bit registered transceivers designed for low-voltage (3.3-V) VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock (CLKAB or CLKBA) input, provided that the clock-enable (CLKENAB\ or CLKENBA\) input is low. Taking the output-enable (OEAB\ or OEBA\) input low accesses the data on either port. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. When VCCis between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. These devices are fully specified for hot-insertion applications using Ioffand power-up 3-state. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The SN54LVTH16952 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVTH16952 is characterized for operation from -40°C to 85°C. The 'LVTH16952 devices are 16-bit registered transceivers designed for low-voltage (3.3-V) VCCoperation, but with the capability to provide a TTL interface to a 5-V system environment. These devices can be used as two 8-bit transceivers or one 16-bit transceiver. Data on the A or B bus is stored in the registers on the low-to-high transition of the clock (CLKAB or CLKBA) input, provided that the clock-enable (CLKENAB\ or CLKENBA\) input is low. Taking the output-enable (OEAB\ or OEBA\) input low accesses the data on either port. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. When VCCis between 0 and 1.5 V, the devices are in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 1.5 V, OE\ should be tied to VCCthrough a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. These devices are fully specified for hot-insertion applications using Ioffand power-up 3-state. The Ioffcircuitry disables the outputs, preventing damaging current backflow through the devices when they are powered down. The power-up 3-state circuitry places the outputs in the high-impedance state during power up and power down, which prevents driver conflict. The SN54LVTH16952 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVTH16952 is characterized for operation from -40°C to 85°C.