SN74LVT16501 3.3-V ABT 18-Bit Universal Bus Transceivers With 3-State Outputs | TI.com

SN74LVT16501 (NRND) 3.3-V ABT 18-Bit Universal Bus Transceivers With 3-State Outputs

 

Not Recommended for New Designs (NRND)

Replaced By SN74LVTH16501 – The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent. Device Revision

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.

Description

The 'LVT16501 are 18-bit universal bus transceivers designed for low-voltage (3.3-V) VCC operation, but with the capability to provide a TTL interface to a 5-V system environment.

Data flow in each direction is controlled by output-enable (OEAB and ), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. For A-to-B data flow, the devices operate in the transparent mode when LEAB is high. When LEAB is low, the A data is latched if CLKAB is held at a high or low logic level. If LEAB is low, the A-bus data is stored in the latch/flip-flop on the low-to-high transition of CLKAB. When OEAB is high, the outputs are active. When OEAB is low, the outputs are in the high-impedance state.

 

Data flow for B to A is similar to that of A to B but uses , LEBA, and CLKBA. The output enables are complementary (OEAB is active high and is active low).

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

To ensure the high-impedance state during power up or power down, should be tied to VCC through a pullup resistor. The minimum value of the resistor is determined by the current-sinking capability of the driver. OE 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 SN74LVT16501 is available in TI's shrink small-outline (DL) and thin shrink small-outline (DGG) packages, which provide twice the input/output (I/O) pin count and functionality of standard small-outline packages in the same printed circuit board area.

The SN54LVT16501 is characterized for operation over the full military temperature range of -55°C to 125°C. The SN74LVT16501 is characterized for operation from -40°C to 85°C.

 

 

 

Features

  • State-of-the-Art Advanced BiCMOS Technology (ABT) Design for 3.3-V Operation and Low-Static Power Dissipation
  • Members of the Texas Instruments WidebusTM Family
  • Support Mixed-Mode Signal Operation (5-V Input and Output Voltages With 3.3-V VCC)
  • Support Unregulated Battery Operation Down to 2.7 V
  • UBTTM (Universal Bus Transceiver) Combines D-Type Latches and D-Type Flip-Flops for Operation in Transparent, Latched, or Clocked Mode
  • Typical VOLP (Output Ground Bounce) < 0.8 V at VCC = 3.3 V, TA = 25°C
  • ESD Protection Exceeds 2000 V Per MIL-STD-883, 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 on Data Inputs Eliminates the Need for External Pullup/Pulldown Resistors
  • Support Live Insertion
  • Distributed VCC and GND Pin Configuration Minimizes High-Speed Switching Noise
  • Flow-Through Architecture Optimizes PCB Layout
  • Package Options Include Plastic 300-mil Shrink Small-Outline (DL) and Thin Shrink Small-Outline (DGG) Packages and 380-mil Fine-Pitch Ceramic Flat (WD) Package Using 25-mil Center-to-Center Spacings

 

Widebus and UBT are trademarks of Texas Instruments Incorporated.