74VCX162601
74VCX162601 is Low Voltage 18-Bit Universal Bus Transceivers manufactured by Fairchild Semiconductor.
- Part of the 74VCX comparator family.
- Part of the 74VCX comparator family.
Description
The VCX162601, 18-bit universal bus transceiver, bines D-type latches and D-type flip-flops to allow data flow in transparent, latched, and clocked modes. Data flow in each direction is controlled by output-enable (OEAB and OEBA), latch-enable (LEAB and LEBA), and clock (CLKAB and CLKBA) inputs. The clock can be controlled by the clock-enable (CLKENAB and CLKENBA) inputs. For A-to-B data flow, the device operates in the transparent mode when LEAB is HIGH. When LEAB is LOW, the A data is latched if CLKAB is held at a HIGH-to 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. Output-enable OEAB is active-LOW. When OEAB is HIGH, the outputs are in the HIGH-impedance state. Data flow for B to A is similar to that of A to B but uses OEBA, LEBA, CLKBA and CLKENBA. The 74VCX162601 is designed for low voltage (1.65V to 3.6V) VCC applications with I/O patibility up to 3.6V. The VCX162601 is also designed with 26Ω series resistors in the B-Port outputs. This design reduces line noise in applications such as memory address drivers, clock drivers, and bus transceivers/transmitters.
Features s 1.65V- 3.6V VCC supply operation s 3.6V tolerant inputs and outputs s 26Ω series resistors in B-Port outputs s t PD (A to B) 3.8 ns max for 3.0V to 3.6V VCC 4.6 ns max for 2.3V to 2.7V VCC 9.2 ns max for 1.65V to 1.95V VCC s Power-down high impedance inputs and outputs s Supports live insertion/withdrawal (Note 1) s Static Drive (IOH/IOL B outputs) ±12 m A @ 3.0V VCC ±8 m A @ 2.3V VCC ±3 m A @ 1.65V VCC s Uses patented noise/EMI reduction circuitry s Latchup performance exceeds 300 m A s ESD performance: Human body model > 2000V Machine model >200V
Note 1: To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver.
Ordering Code:
Order Number 74VCX162601MTD...
