|
|
Part: PI74LCX245
Category:
Logic
-> Bus Interface
-> Bus Oriented Circuits
Description: Octal Bidirectional Transceiver
Company: Pericom Semiconductor Corporation
Datasheet: Download PI74LCX245 datasheet File size : 31 kB
Request For quote: Find where to buy PI74LCX245
Datasheet text preview:
PI74LCX245
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS 3.3V 8-Bit Bidirectional Transceiver
Product Features
· Functionally compatible with FCT3, LVT, and 74 series 245 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 · Power Down High Impedance inputs and 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 using the Company's advanced 0.6 micron CMOS technology achieving high speed while maintaining low power operation. The PI74LCX245 is an 8-bit bidirectional transceiver designed for asynchronous two-way communication between data buses. The transmit/receive input pin (T/R) determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A ports to B ports, and receive (active LOW) from B ports to A ports. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74LCX245 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
T/R OE A0 B0 A1 B1 A2 B2 A3 B3 A4 B4
1A5
Product Pin Configuration
Product Pin Description
Pin Name OE Description 3-State Output Enable Inputs (Active LOW) Direction Control Input Side A Inputs or 3-State Outputs Side B Inputs or 3-State Outputs Ground Power
20-Pin H20 L20 Q20 S20
T/R A0-A7 B0-B7 GND VCC
Truth Table(1)
Inputs (1)
B5 A6 B6 A7 B7
OE L L H
T/R L H X
Outputs (1) Bus B Data to Bus A Bus A Data to Bus B High State Z
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance
1
PS2099B 11/17/02
PI74LCX245 3.3V 8-Bit Bi-Directional Transceiver
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ... 65°C to +150°C Ambient Temperature with Power Applied ... 40°C to +85°C 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 Parameter Supply Voltage Input Voltage Output Voltage Output Current HIGH or LOW State TRI-State VCC = 3.0V-3.6V VCC = 2.7V TA Free-Air Operating Temperature Input Edge Rate V = 0.8V-2.0V, VCC = 3.0V Operating Data Retention Min. 2.0 1.5 0 0 0 -40 0 Max. 3.6 3.6 5.5 VCC 5.5 ±24 ±12 +85 10 mA °C ns/V V Units
t/V
2
PS2099B
11/17/02
PI74LCX245 3.3V 8-Bit Bi-Directional Transceiver
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
DC Electrical Characteristics (Over the Operating Range, TA = -40°C to +85°C, VCC = 2.7V to 3.6V)
Parameters Description VIH VIL VOH Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = 2.7-3.6 VCC = 2.7 VCC = 3.0 IOH = 0.1mA IOH = 12mA IOH = 18mA IOH = 24mA VOL Output LOW 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 Output Leakage Power Down Disable Quiescent Power Supply Current Quiescent 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 Min. 2.0 -- VCC-0.2 2.2 2.4 2.2 -- -- -- -- -- -- -- -- Typ(2) -- -- -- -- -- -- -- -- -- -- -0.7 -- -- -- 0.1 Max. -- 0.8 -- -- -- -- 0.2 0.4 0.4 0.55 -1.2 ±5 ±5
10
Units
V
VCC = 0V, VIN or VOUT 5.5V VCC = Max. VCC = Max. VIN = GND or VCC VIN = VCC 0.6V(3)
±10 10 500 µA
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, +25°C ambient. 3. Per TTL driven input; all other inputs at Vcc or GND.
Capacitance
Parameters CIN COUT CPD Description Input Capacitance Output Capacitance Power Dissipation Capacitance Test Conditions VCC = Open, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC, F = 10 MHz Typical 7 8 25 pF Units
3
PS2099B
11/17/02
Others parts begin by pi
PI-1 PI-2 PI-3 PI-4 PI-5 PI-6 PI-7 PI-8 PI-9 PI-10 PI-11 PI-12 PI-13 PI-14 PI-15 PI-16 PI-17 PI-18 PI-19 PI-20 PI-21 PI-22 PI-23 PI-24 PI-25 PI-26 PI-27 PI-28 PI-29 PI-30 PI-31 PI-32 PI-33 PI-34 PI-35 PI-36 PI-37 PI-38 PI-39 PI-40 PI-41 PI-42 PI-43 PI-44 PI-45 PI-46 PI-47 PI-48 PI-49 PI-50 PI-51 PI-52 PI-53 PI-54 PI-55 PI-56 PI-57 PI-58 PI-59 PI-60 PI-61 PI-62 PI-63 PI-64 PI-65 PI-66
|
|
|
