PI74AUC164245 Datasheet, PDF (1/9 Pages) Pericom Semiconductor Corporation – 16-Bit 0.8V to 2.7V Scaled Configurable Level Shifting Transceiver with 3-State Outputs1DIR1OE1B11471A1To

PI74AUC164245
16-Bit 0.8V to 2.7V Scaled Configurable Level
Shifting Transceiver with 3-State Outputs
Features
• PI74AUC164245 is designed for low voltage operation:
0.8V to 2.7V
• I_OFF supports partial Power-Down mode operation
• Drive Capability 16mA @ 2.5V
• Each supply rail is configurable over supply range
• ESD Protection exceeds JESD22
– 2000V Human Body Model (A114-B)
– 200V Machine Model (A115-A)
• Latch-up performance exceeds 100mA per JESD 78
• Industrial operation at –40°C to +85°C
• Packaging:
– 48-pin plastic 240-mil TSSOP (A)
– 48-pin plastic 173-mil TVSOP (K)
Block Diagram
1DIR ¹
1A1 ⁴⁷
48 _1OE
To Seven Other Channels
2 _1B1
2DIR ²⁴
2^A1 ³⁶
25 _2OE
13 _2B1
To Seven Other Channels
Description
Pericom Semiconductor’sAUC series of logic circuits are produced
using the Company’s advanced CMOS technology, achieving
industry leading performance.
The PI74AUC164245 is a 16-bit (dual-octal) noninverting bus
transceiver that contains two separate supply rails. B port (V_CCB)
set to operate at 0.8 to 2.5V and A port (V_CCA) set to operate
at 0.8 to 2.5V. This arrangement permits universal bidirectional
translation over the voltage ranges.
The PI74AUC164245 is designed for asynchronous communication
between data buses. Data is transmitted from the A bus to the B bus
or vice versa, depending on the logic level at the direction control
(DIR)input. The output-enable (OE) input is used to disable outputs
so buses are isolated.
The control pins, ₁DIR, ₂DIR, ₁OE and ₂OE are supplied by
V_CCA.
The device is fully specified for partial-power-down applications
using I_OFF. The I_OFF circuitry disables the outputs, preventing
damaging current backflow through the device when it is powered
down.
To ensure the high impedance state during power up or power
down, the output-enable (OE) input should be tied to V_CC through
a pullup resistor, the minimum value of the resistor is determined
by the current-sinking capability of the driver.
1
PS8730
08/17/04