PI74AVC16345 Datasheet, PDF (1/10 Pages) Pericom Semiconductor Corporation – 2.5V, Registered 1-Bit to 4-Bit Address Driver w/3-State Outputs

PI74AVC+16345
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2.5V, Registered 1-Bit to 4-Bit Address
Driver w/3-State Outputs
Product Features
• PI74AVC+16345 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
• I/O Tolerant to 3.6V
• All outputs contain a patented DDC
(Dynamic DriveControl) circuit that reduces noise without
degrading propagation delay.
• Industrial operation: –40°C to +85°C
• Available Packages:
– 56-pin 240 mil wide plastic TSSOP (A)
– 56-pin 173 mil wide plastic TVSOP (K)
Product Description
Pericom Semiconductor’s PI74AVC+ series of logic circuits are
produced using the Company’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
56
CE2
1Q1
1Q5
D1 ⁸
CE
D
D5 ³⁶
CE
D
4Q1
4Q5
1Q2
1Q6
D2 ¹⁴
CE
D
D6 ⁴²
CE
D
4Q2
4Q6
1Q3
1Q7
D3 ¹⁵
CE
D
D7 ⁴³
CE
D
4Q3
4Q7
1Q4
1Q8
D4 ²¹
CE
D
D8 ⁴⁹
CE
D
4Q4
4Q8
CLK ²⁸
1
PS8442A 08/06/01