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PI74LVTCH16245A Datasheet(PDF) 1 Page - Pericom Semiconductor Corporation |
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PI74LVTCH16245A Datasheet(HTML) 1 Page - Pericom Semiconductor Corporation |
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1 / 7 page  1 PS 8649C 03/14/07 Product Description ThePI74LVTCH16245isanon-inverting16-bitBidirectionalTrans- ceiverdesignedforlow-voltage2.7Vto3.6VVCCoperation,withthe capability of interfacing to the 5V system environment. This tranceiver is designed for asynchronous two-way communication between data buses. The direction control input pin (xDIR) deter- mines the direction of the data flow through the bidirectional transceiver. The Direction and Output Enable controls are designed to operate this device as either two independent 8-bit tranceivers or one 16-bit transceiver. The output enable (xOE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74LVTCH16245 has "Bus Hold" which retains the data input's last valid logic state whenever the data input goes to high- impedance, preventing "floating" inputs and eliminating the need for pull-up/down resistors. When VCC is between 0 to 1.5V during power up or power down, the outputs of the device are in the high-impedance state. To ensure the high-impedance state above 1.5V, OE 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. The device fully supports live-insertion with its Ioff and power-up/ down 3-state. The Ioff circuitry disables the outputs when the power is off, preventing the backflow of damaging current through the device. Power-up/down 3-state places the outputs in the high-impedance state during power up or power down, preventing driver conflict. 3.3V 16-Bit Bi-Directional Transceiver with 3-State Outputs Logic Block Diagram Product Features · Advanced low power CMOS design for 2.7V to 3.6V Vcc operation · Supports 5V input/output tolerance in mixed signal mode operation · Function compatible with LVT family of products · Balanced ±24mA output drive · Typical VOLP (Output Ground Bounce) < 0.8V at VCC=3.3V, TA=25°C ·Ioff and Power Up/Down 3-State support live insertion · Bus Hold on data inputs eliminates the need for external pull-up/down resistors · Latch-up performance exceeds 200mA Per JESD78 · ESD protection exceeds JESD 22 – 2000V Human-Body Model (A114-B) – 200V Machine Model (A115-A) · Industrial Temperature: –40°C to +85°C · Packaging (Pb-free & Green available): – 48-pin 240-mil wide plastic TSSOP (A) PI74LVTCH16245 2 OE 1 OE 1 B0 1 A0 1 DIR 1 B1 1 A1 1 B2 1 A2 1 B3 1 A3 1 B4 1 A4 1 B5 1 A5 1 B6 1 A6 1 B7 1 A7 2 B0 2 A0 2 DIR 2 B1 2 A1 2 B2 2 A2 2 B3 2 A3 2 B4 2 A4 2 B5 2 A5 2 B6 2 A6 2 B7 2 A7 47 46 44 43 41 40 38 37 1 2 3 5 6 8 9 11 12 48 36 35 33 32 30 29 27 26 24 13 14 16 17 19 20 22 23 25 06-0215 |
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