SN54LVT543, SN74LVT543 3.3-V ABT OCTAL REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS

SCBS137D - MAY 1992 - REVISED JULY 1995

features

State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low Static Power Dissipation
Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V V_CC)
Support Unregulated Battery Operation Down to 2.7 V
Typical V_OLP (Output Ground Bounce)< 0.8 V at V_CC = 3.3 V, T_A = 25°C
ESD Protection Exceeds 2000 V Per MIL-STD-883C, Method 3015; Exceeds 200 V Using Machine Model (C = 200 pF, R = 0)
Latch-Up Performance Exceeds 500 mA Per JEDEC Standard JESD-17
Bus-Hold Data Inputs Eliminate the Need for External Pullup Resistors
Support Live Insertion
Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB), and Thin Shrink Small-Outline (PW) Packages, Ceramic Chip Carriers (FK), and Ceramic (JT) DIPs

description

These octal transceivers are designed specifically for low-voltage(3.3-V) V_CC operation, but with the capability to providea TTL interface to a 5-V system environment.

The 'LVT543 contain two sets of D-type latches for temporarystorage of data flowing in either direction. Separate latch-enable(or) and output-enable(or) inputs areprovided for each register to permit independent control in eitherdirection of data flow.

The A-to-B enable ()input must be low in order to enter data from A or to output datafrom B. If is low and is low, theA-to-B latches are transparent; a subsequent low-to-high transitionof puts the Alatches in the storage mode. With and both low, the3-state B outputs are active and reflect the data present at theoutput of the A latches. Data flow from B to A is similar butrequires using the ,, and inputs.

Active bus-hold circuitry is provided to hold unused or floatingdata inputs at a valid logic level.

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

The SN74LVT543 is available in TI's shrink small-outline package(DB), which provides the same I/O pin count and functionality ofstandard small-outline packages in less than half theprinted-circuit-board area.

The SN54LVT543 is characterized for operation over the fullmilitary temperature range of -55°C to 125°C. TheSN74LVT543 is characterized for operation from -40°C to85°C.

Title: 3.3-V ABT OCTAL REGISTERED TRANSCEIVERS WITH 3-STATE OUTPUTS
Product Family: LATCHED TRANSCEIVERS
Device Functionality: OCTAL REGISTERED BUS TRANSCEIVER
Orderable Devices: SN74LVT543DBLE, SN74LVT543DW, SN74LVT543DWR, SN74LVT543NSLE, SN74LVT543PWLE

View the complete PDF datasheet: scbs137d.pdf (133 K Bytes) (Requires Acrobat Reader 3.x)

View more information about generic part numbers:SN74LVT543

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