PI74LPT240 Datasheet, PDF (1/4 Pages) Pericom Semiconductor Corporation – Fast CMOS 3.3V 8-Bit Inverting Buffer/Line Driver

PI74LPT240
Fast CMOS 3.3V 8-Bit
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Fast CMOS 3.3V 8-Bit
Inverting Buffer/Line Driver
Product Features
• Compatible with LCX™ and LVT™ families of products
• Supports 5V Tolerant Mixed-Signal Mode Operation
– Input can be 3V or 5V
– Output can be 3V or connected to 5V bus
• Advanced Low-Power CMOS Operation
• Excellent output drive capability:
Balanced drives (24mA sink and source)
• Low ground bounce outputs
• Hysteresis on all inputs
• Industrial operating temperature range: –40°C to +85°C
• Packages available:
– 20-pin 173 mil wide plastic TSSOP (L)
– 20-pin 150 mil wide plastic QSOP (Q)
– 20-pin 150 mil wide plastic TQSOP (R)
– 20-pin 300 mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor’s PI74LPT series of logic circuits are
produced using the Company’s advanced 0.6 micron CMOS
technology, achieving industry leading speed grades.
The PI74LPT240 is an 8-bit inverting buffer/line driver designed for
driving high-capacitive memory loads. With its balanced-drive
characteristics, this high-speed, low-power device provides lower
ground bounce, transmission line matching of signals, fewer line
reflections and lower EMI and RFI effects. This makes it ideal for
driving on-board buses and transmission lines.
The PI74LPT240can be driven from either 3.3V or 5.0V devices
allowing this device to be used as a translator in a mixed
3.3/5.0V system.
Logic Block Diagram
OEA
DA0
OB0
DA1
OB1
DA2
OB2
DA3
OB3
Product Pin Configuration Product Pin Description
OEB
OA0
DB0
OA1
OEA 1
20 VCC
DA0 ₂
19 OEB
OB0 ₃
18 OA0
DA1 ₄
17 DB0
OB1
5
20-Pin
L,Q
16
OA1
DA2 _{6 R,S 15} DB1
OB2 ₇
14 ^OA2
DA3 ₈
OB3 ₉
GND ₁₀
13 ^DB2
12 ^OA3
11 ^DB3
Pin Name
OEA, OEB
Dxx
Oxx
GND
VCC
Description
3-State Output Enable
Inputs (Active LOW)
Inputs
Outputs
Ground
Power
DB1
OA2 Truth Table⁽¹⁾
Inputs
Outputs
DB2
OEA
OEB
DXX
OXX
OA3
L
L
L
H
L
L
H
L
DB3
H
H
X
Z
Note:
1. H = High Voltage Level, X = Don't Care,
L = Low Voltage Level, Z = High Impedance
1
PS8476 04/26/00