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PI74LCX541
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 3.3V 8-Bit Buffer/Line Driver Product Features
* Functionally compatible with FCT3, LVT, and 74 series 541 families of products * Tri-State outputs * 5V Tolerant inputs and outputs * 2.0V-3.6V VCC supply operation * Balanced sink and source output drives (24 mA) * Low ground bounce outputs * Supports live insertion * ESD Protection exceeds 2000V, Human Body Model 200V, Machine Model * Packages available: - 20-pin 209-mil wide plastic SSOP (H) - 20-pin 173-mil wide plastic TSSOP (L) - 20-pin 150-mil wide plastic QSOP (Q) - 20-pin 300-mil wide plastic SOIC (S)
Product Description
Pericom Semiconductor's PI74LCX series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology achieving high speed while maintaining low power operation. The PI74LCX541 is an 8-bit 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. This device offers a flow-through organization for ease of board layout. The PI74LCX541 can be driven from either 3.3V or 5.0V devices allowing this device to be used as a translator in a mixed 3.3V/5.0V system.
Logic Block Diagram
OEA OEB
Product Pin Configuration Product Pin Description
Pin Name
OEA D0 O1 D2
Description 3-State Output Enable, Inputs (Active LOW) Inputs Outputs Ground Power
D0 D1
O0 O1
D3 D4 D5 D6 D7
D2
O2
GND
1 20 2 19 3 18 4 20-Pin 17 H20 16 5 L20 15 6 Q20 7 14 S20 8 13 9 12 10 11
VCC OEB O0 O1 O2 O3 O4 O5 O6 O7
OEA, OEB D0-D7 O0-O7 GND VCC
D3
O3
D4
O4
Truth Table(1)
Inputs Outputs DX L H X X OX L H Z Z OEA L L OEB L L X H
D5 D6
O5 O6
D7
O7
H X
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance
1
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541 3.3V 8-Bit Buffer/Line Driver
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ............................................................. -65C to +150C Ambient Temperature with Power Applied ............................ -40C to +85C Supply Voltage to Ground Potential (Inputs & Vcc Only) ...... -0.5V to +7.0V Supply Voltage to Ground Potential (Outputs & D/O Only) .. -0.5V to +7.0V DC Input Voltage .................................................................... -0.5V to +7.0V DC Output Current .............................................................................. 120 mA Power Dissipation .................................................................................... 1.0W Note: Stresses greater than those listed under MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Recommended Operating Conditions
Symbol VCC VI VO IOH/IOL TA Parame te r Supply Voltage Input Voltage O utput Voltage O utput Current HIGH or LO W State TRI- State VCC = 3.0V- 3.6V VCC = 2.7V Free- Air O perating Temperature Input Edge Rate V = 0.8V- 2.0V, VCC = 3.0V O perating Data Retention M in. 2.0 1.5 0 0 0 -40 0 M ax. 3.6 3.6 5.5 VCC 5.5 24 12 +85 10 mA C ns/V V Units
t/V
2
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541 3.3V 8-Bit Buffer/Line Driver
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 2.7V to 3.6V)
Parame te rs VIH VIL VOH D e s cription Input HIGH Voltage Input LO W Voltage O utput HIGH Voltage Te s t Conditions (1) Guaranteed Logic HIGH Level Guaranteed Logic LO W Level VCC = 2.7- 3.6 VCC = 2.7 VCC = 3.0 IOH = 0.1mA IOH = 12mA IOH = 18mA IOH = 24mA VOL O utput LO W Voltage VCC = 2.7- 3.6 VCC = 2.7 VCC = 3.0 IOL = 0.1mA IOL = 12mA IOL = 16mA IOL = 24mA VIK II IOZ IOFF ICC Clamp Diode Voltage Input Leakage Current Tri- State O utput Leakage Power Down Disable Q uiescent Power Supply Current Q uiescent Power Supply Current TTL Inputs HIGH VCC = Min., IIN = 18mA 0 VI 5.5V 0 VO 5.5V VI = VIH or VIL VCC = 2.7- 3.6 VCC = 2.7- 3.6 M in. 2.0 VCC- 0.2 2.2 2.4 2.2 Typ(2) -0.7 0.1 M ax. 0.8 0.2 0.4 0.4 0.55 -1.2 5 5 10 10 500 V Units
VCC = 0V, VIN or VOUT 5.5V VCC = Max. VCC = Max. VIN = GND or VCC VIN = VCC 0.6V(3)
A
ICC
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 3.3V, +25C ambient. 3. Per TTL driven input; all other inputs at VCC or GND.
Capacitance
Parame te rs D e s cription CIN COUT CPD Input Capacitance O utput Capacitance Power Dissipation Capacitance Te s t Conditions VCC = O pen, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC, F = 10 MHz Typ. 7 8 25 pF Units
3
PS2101B
07/22/99
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX541 3.3V 8-Bit Buffer/Line Driver
Switching Characteristics over Operating Range
VCC = 3.3V 0.3V Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(O) D e s cription Propagation Delay DXX to O XX O utput Enable time O utput Disable Time O utput Skew(1) Conditions CL = 50pF RL = 500 M in. 1.5 1.5 1.5 M ax. 6.5 8.5 7.5 1.0 VCC = 2.7V M in. 1.5 1.5 1.5 M ax. 7.5 9.5 ns 8.5 Units
Note: 1. Skew between any two outputs, of the same package, switching in the same direction.
Dynamic Switching Characteristics (TA = +25C)
Parame te rs VOLP VOLV D e s cription Dynamic LO W Peak Voltage Dynamic LO W Valley Voltage Te s t Conditions (1) VCC = 3.3V, CL = 50pF VIH = 3.3V, VIL = 0V VCC = 3.3V, CL = 50pF VIH = 3.3V, VIL = 0V Typ. Units
0.8
V
Note: 1. Measured with n-1 outputs switching from High-to-Low or Low-to-High. The remaining output is measured in the LOW state.
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
4
PS2101B 07/22/99

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