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PI74AVC+16345

2.5V, Registered 1-Bit to 4-Bit Address

Driver w/3-State Outputs

Product Features

聲

PI74AVC+16345 is designed for low-voltage operation,

V

CC

= 1.65V to 3.6V

聲

True 鹵24mA Balanced Drive @3.3V

聲

I

OFF

supports partial power down operation

聲

I/O Tolerant to 3.6V

聲

All outputs contain a patented DDC

(Dynamic DriveControl) circuit that reduces noise without

degrading propagation delay.

聲

Industrial operation: 聳40擄C to +85擄C

聲

Available Packages:

聳 56-pin 240 mil wide plastic TSSOP (A)

聳 56-pin 173 mil wide plastic TVSOP (K)

Product Description

Pericom Semiconductor聮s PI74AVC+ series of logic circuits are

produced using the Company聮s advanced submicron CMOS

technology, achieving industry leading speed.

The PI74AVC+16345 is ideal for driving memory modules in

systems where multiple memory modules are used. One each of the

four output banks drive a different module; modules can be added

or removed without affecting the signal integrity of the other

modules in the system. Dual clock enables (CEx) allow use of the

device in high-speed memory interleaving applications where the

clock can be alternately enabled and disabled, allowing the address

to be held for additional cycles during memory access.

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

1

CE1

29

OE

1Q1

D1

8

CE

D

56

CE2

1Q5

D5

36

CE

D

4Q1

4Q5

1Q2

D2

14

CE

D

1Q6

D6

42

CE

D

4Q2

4Q6

1Q3

D3

15

CE

D

1Q7

D7

43

CE

D

4Q3

4Q7

1Q4

D4

21

CE

D

1Q8

D8

49

CE

D

4Q4

CLK

28

4Q8

1

PS8442A

08/06/01

next

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