MC74LVXC3245: Configurable Dual Supply Octal Transceiver
The 74LVXC3245 is a 24-pin dual-supply, octal configurable voltage interface transceiver especially well suited for PCMCIA and other real time configurable I/O applications. The VCCA pin accepts a 3V supply level; the A port is a dedicated 3V port. The VCCB pin accepts a 3V-to-5V supply level. The B port is configured to track the VCCB supply level. A 5V level on the VCCB pin will configure the I/O pins at a 5V level and a 3V VCCB will configure the I/O pins at a 3V level. The A port interfaces with a 3V host system and the B port to the card slots. This device will allow the VCCB voltage source pin and I/O pins on the B port to float when OE is High. This feature is necessary to buffer data to and from a PCMCIA socket that permits PCMCIA cards to be inserted and removed during normal operation. The Transmit/Receive (T/R) input determines the direction of data flow. Transmit (active-High) enables data from the A port to B port. Receive (active-Low) enables data from the B port to the A port.
Features- Bidirectional Interface Between 3V and 3V/5V Buses
- Control Inputs Compatible with TTL Level
- Outputs Source/Sink Up to 24mA
- Guaranteed Simultaneous Switching Noise Level and Dynamic Threshold Performance
- Available in SOIC and TSSOP Packages
- Flexible VCCB Operating Range
- Allows B Port and VCCB to Float Simultaneously When OE Is High
- Functionally Compatible with the 74 Series 245 PIN Pins OE T/R A0-A7 B0-B7
- Pb-Free Packages are Available*
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Packages
Simulation Models (1)
Package Drawings (2)
Data Sheets (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| MC74LVXC3245DTG | Active | Pb-free
Halide free | TSSOP-24 | 948H-01 | 1 | Tube | 62 | $0.8666 |
| MC74LVXC3245DTRG | Active | Pb-free
Halide free | TSSOP-24 | 948H-01 | 1 | Tape and Reel | 2500 | $0.8666 |
| MC74LVXC3245DWRG | Active | Pb-free
Halide free | SOIC-24 | 751E-04 | 3 | Tape and Reel | 1000 | $0.8666 |
Specifications
| Product | Channels | Output | VCC Min (V) | VCC Max (V) | tpd Max (ns) | IO Max (mA) |
|---|
| MC74LVXC3245DTG | 8 | 3-State | 2.3 | 3.6 | 9 | 24 |
| MC74LVXC3245DTRG | 8 | 3-State | 2.3 | 3.6 | 9 | 24 |
| MC74LVXC3245DWRG | 8 | 3-State | 2.3 | 3.6 | 9 | 24 |
