PI74AVC+16820
2.5V 10-Bit Flip-Flop with
Dual and 3-State Outputs
Features
• PI74AVC+16820 is designed for low-voltage operation,
V
CC
= 1.65V to 3.6V
• True ±24mA Balanced Drive @ 3.3V
• I
OFF
supports Partial power-down operation
• 3.6V I/O Tolerant inputs and outputs
• All outputs contain a patented DDC (Dynamic Drive-
Control) circuit that reduces noise without degrading
propagation delay.
• Industrial operation: –40°C to +85°C
• Packaging (Pb-free & Green available):
– 56-pin 240-mil wide plastic TSSOP (A)
Description
Pericom Semiconductor’s PI74AVC+16820, a 10-bit flip-flop
designed for 1.65V to 3.6V V
CC
operation. It is designed with
edge-triggered D-type flip- flops. On the positive transition of clock
(CLK) input. The device provides true data at the Q outputs.
A buffered output-enable (OE) input can be used to place the ten
outputs in either a normal logic state (HIGH or LOW level) or
a high-impedance state. In the high-impedance state, the outputs
neither load nor drive the bus lines significantly. The high-impedance
state and increased drive provide the capacity to drive bus lines
without the need for interface or pullup components.
OE does not affect the internal operation of the flip-flops. Old data
can be retained or new data can be entered while 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 whose
minimum value is determined by the current sinking capability of
the driver.
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Block Diagram
1
OE
1
2
OE
28
2
C
1
1
D
CLK
D
1
56
55
1
Q
1
3
1
Q
2
TO 9 OTHER CHANNELS
06-0172
1
PS8446E
06/01/06
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
