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PI74LCX16245
Fast CMOS 3.3V 16-Bit Bidirectional Transceiver
Product Features
* Functionally compatible with FCT3, LVT, and 74 series 16245 families of products * Tri-State outputs * 5V Tolerant inputs and outputs * 2.0V-3.6V VCC supply operation * Balanced sink and source output drives (24mA) * 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: - 48-pin 240-mil wide plastic TSSOP (A) - 48-pin 300-mil wide plastic SSOP (V)
Product Description
Pericom Semiconductor's PI74LCX series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74LCX16245 is a 16-bit bidirectional transceiver designed for asynchronous two-way communication between data buses. The direction control input pin (xDIR) determines the direction of data flow through the bidirectional transceiver. The Direction and Output Enable controls are designed to operate this device as either two independent 8-bit transceivers or one 16-bit transceiver. The output enable (OE) input, when HIGH, disables both A and B ports by placing them in HIGH Z condition. The PI74LCX16245 can 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
1DIR
1OE
2DIR 2OE
2A0 1B0 2B0 2A1 1B1 2B1 2A2 1B2 2B2 2A3 1B3 2B3 2A4 1B4 2B4 2A5 1B5 2B5 2A6 1B6 2B6 2A7 1B7 2B7
1A0
1A1
1A2
A31
1A4
1A5
1A6
1A7
1
PS2088B
09/19/02
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PI74LCX16245 3.3V 16-Bit Bidirectional Transceiver
Product Pin Description
Pin Name xOE xDIR
XAX XBX
Truth Table(1)
Inputs (1) xOE L L H xDIR L H X Outputs (1) Bus B Data to Bus A Bus A Data to Bus B Z
De s cription 3- State Output Enable Inputs (Active LOW) Direction Control Input Side A Inputs or 3- State Inputs Side B Outputs or 3- State Outputs Ground Power
GND VCC
Product Pin Configuration
Note: 1. H = High Voltage Level X = Don't Care, L = Low Voltage Level Z = High Impedance
48-Pin A, V
2
PS2088B
09/19/02
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16245 3.3V 16-Bit Bidirectional Transceiver
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 .............................................................................. 120mA 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 Parame te r Supply Voltage Input Voltage Output Voltage HIGH or LOW State 3- State VCC = 3.0V- 3.6V VCC = 2.7V Operating Data Retention M in. 2.0 1.5 0 0 0 - 40 V = 0.8V- 2.0V, VCC = 3.0V 0 M a x. 3.6 3.6 5.5 VCC 5.5 24 12 +85 10 C ns/V mA V Units
IOH/IOL TA t/V
Output Current Free- Air Operating Temperature Input Edge Rate
3
PS2088B
09/19/02
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16245 3.3V 16-Bit Bidirectional Transceiver
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 2.7V to 3.6V)
Parame te rs De s cription VIH VIL VOH Input HIGH Voltage Input LOW Voltage Output HIGH Voltage Te s t 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 = -24 mA 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 ICC Clamp Diode Voltage Input Leakage Current 3- State Output Leakage Power Down Disable 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 A V Units
VCC = 0V, VIN or VOUT 5.5V VIN = GND or VCC VIN = VCC - 0.6V(3)
Quiescent Power Supply Current VCC = Max. Quiescent Power Supply Current VCC = Max. TTL Inputs HIGH
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 CIN COUT C PD De s cription Input Capacitance Output Capacitance Power Dissipation Capacitance Te s t Conditions VCC = Open, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC VCC = 3.3V, VI = 0V or VCC, F = 10 MHz Typ. 7 8 20 pF Units
4
PS2088B
09/19/02
Switching Characteristics over Operating Range
VCC = 3.3V 0.3V Parame te rs tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(O) De s cription Propagation Delay DXX to OXX Output Enable time Output Disable Time Output Skew(1) C L = 50pF RL = 500 Conditions M in. 1.5 1. 5 1.5 M a x. 4.5 6.5 6.4 1.0 VCC = 2.7V M in. 1. 5 1.5 1.5 M a x. 5.2 7.2 6.9 Units
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16245 3.3V 16-Bit Bidirectional Transceiver
ns
Notes: 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 De s cription Dynamic LOW Peak Voltage Dynamic LOW Valley Voltage Te s t Conditions (1) VCC = 3.3V, CL = 50pF VIH = 3.3V, VIL = 0V Typ. 0.8 Units 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.
5
PS2088B
09/19/02
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74LCX16245 3.3V 16-Bit Bidirectional Transceiver
Packaging Mechanical: 48-Pin TSSOP (A) Package
48
.236 .244
6.0 6.2
1
.488 12.4 .496 12.6 .047 1.20 Max SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319 BSC 8.1
X.XX X.XX
DENOTES DIMENSIONS IN MILLIMETERS
.0197 BSC 0.50
.007 .010 0.17 0.27
.002 .006 0.05 0.15
Packaging Mechanical: 48-Pin SSOP (V) Package
48
.291 .299 7.39 7.59
.395 .420 10.03 10.67
Gauge Plane .010 0.25 1 .620 .630 15.75 16.00 .02 0.51 .04 1.01
.008 0.20 Nom.
.015 0.381 x 45 .025 0.635
.110 2.79 Max .025 BSC 0.635 X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS .008 0.20 .0135 0.34
0-8
.008 0.20 .016 0.40
Ordering Information
Orde ring Co de P I7 4 LC X16 2 4 5 A P I7 4 LC X16 2 4 5 V D e s criptio n 4 8 - P in 2 4 0 - mil wid e P lastic TS S O P (A) 4 8 - P in 3 0 0 - mil wid e P lastic S S O P (V)
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
6
PS2088B 09/19/02

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