PI74ALVC162835 Datasheet, PDF (1/5 Pages) Pericom Semiconductor Corporation – 18-Bit Universal Bus Driver with 3-State Outputs

PI74ALVC162835FD _{111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222333444555666777888999000111222333444555666777888999000111222111222333444555666777888999000111222}
18-Bit Universal Bus Driver
with 3-State Outputs
Product Features
• PI74ALVC162835FD is designed for low voltage operation,
V_CC = 2.3V to 3.6V
• Data inputs have clamp diodes to V_CC
• Outputs have equivalent 26Ω series resistors
• Supports PC133 Registered DIMM
• Typical V_OLP (Output Ground Bounce)
< 0.8V at V_CC = 3.3V, T_A = 25°C
• Typical V_OHV (Output V_OH Undershoot)
< 2.0V at V_CC = 3.3V, T_A = 25°C
• Industrial operation at –40°C to +85°C
• Packages available:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 173 mil wide plastic TVSOP (K6)
– 56-pin 300 mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor’s PI74ALVC series of logic circuits
are produced using the Company’s advanced 0.5 micron CMOS
technology, achieving industry leading speed.
The 18-bit PI74ALVC162835FD universal bus driver is designed
for 2.3V to 3.6V V_CC operation.
Data flow from A to Y is controlled by Output Enable (OE).
The device operates in the transparent mode when LE is HIGH. The
A data is latched if CLK is held at a high or low logic level. If LE
is LOW, the A-bus is stored in the latch/flip-flop on the low-to-high
transition of CLK. When OE is HIGH, the outputs are in the high-
impedance state.
To ensure the high-impedance state during power up or power
down, OE 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.
Logic Block Diagram
OE ²⁷
CLK ³⁰
28
LE
A1 ⁵⁴
1D
C1
CLK
3 _Y1
TO 17 OTHER CHANNELS
1
PS8474 04/25/00