3.3V-5V Voltage Translator Board
IC/Module: LVXC3245 8-bit Configurable Dual Supply Transceiver
The LVXC3245 is a 24-pin dual-supply, non-inverting bus transceiver especially well-suited for PCMCIA, and other real time configurable I/O applications. The VCCA pin receives a 3V supply level. The A Port is a dedicated 3V port. The VCCB pin receives a 3V-to-5V supply level. The B Port is set up to track the VCCB supply level respectively. A 5V level on the VCC pin will configure the I/O pins at a 5V level and a 3V VCC will configure the I/O pins at a 3V level. The A Port should interface with a 3V host system and the B Port to the card slots. This device allows the VCCB voltage source pin and I/O pins on the B Port to float when OE# is HIGH. This attribute is necessary to buffer data to and from a PCMCIA socket that require live insertion and removal during normal operation.
Bidirectional Adjustment of Voltage Signals
The 3.3V-5V Voltage Translator Board provides bi-directional adjustment of voltage signals, which means the voltage signals may be sent and received at the same time (from 3.3V to 5V and vice versa). In bi-directional mode, the position of jumpers is subjected to the voltage signal direction. For instance, if voltage signals are sent from a development system (3.3V) through the LSV0 pin to a device (5V) through the HVS0 pin, it is compulsory to position those pins' jumpers into the position marked →. At the same time, voltage signals may be sent from the device (5V) using HVS1 to the development system (3.3V) using LVS1, as long as that those pins' jumpers are placed in the position marked ←. These rules apply to all jumpers on the board—LVS0-7 and HVS0-7.
- 3.3V-5V Voltage Translator Board (1)
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