16-Bit Buffer/Driver with 3-State Outputs PI74VCX Family designed
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PI74VCX16244
16-Bit Buffer/Driver with 3-State Outputs
PI74VCX Family designed voltage operation, 1.8V 3.6V 3.6V Tolerant Inputs Outputs Supports Live Insertion Balanced Drive, ±24mA Uses patented Noise Reduction Circuitry Typical VOLP (Output Ground Bounce) <0.6V 2.5V, Typical VOHV (Output Undershoot) -0.6V 2.5V, Power-Off high impedance inputs outputs Industrial operation -40°C +85°C Packaging (Pb-free Green available): 48-pin 240-mil wide plastic TSSOP
Description
Pericom Semiconductor's PI74VCX16244 buffer/driver designed specifically improve both performance density 3-state memory address drivers, clock drivers, bus-oriented receivers transmitters. device used four 4-bit buffers, 8-bit buffers, 16-bit buffer. provides true outputs symmetrical active-low output-enable (OE) inputs. ensure high-impedance state during power power down, should tied through pullup resistor; minimum value resistor determined current-sinking capability driver. PI74VCX family Tolerant, allowing operate 1.8/3.6V systems.
Block Diagram
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Description
Name Description 3-State Output Enable Inputs (Active LOW) Inputs 3-State Outputs Ground Power
Truth Table(1)
Inputs Outputs
Configuration
Notes: High Signal Level Signal Level Don't Care Irrelevant High Impedance
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Maximum Ratings
(Above which useful life impaired. user guidelines, tested.) Supply Voltage Range, 0.5V 4.6V Input Voltage Range, -0.5V 4.6V Output Voltage Range, (3-Stated) -0.5V 4.6V Output Voltage Range, VO(1) (Active) -0.5V VCC+0.5 Input Diode Current (IIK) VI<0V -50mA Output Diode Current (IOK) VO<0V -50mA VO>VDD +50mA Output Source/Sink Current (IOH/IOL) ±50mA Current Supply (ICC GND) ±100mA Storage Temperature Range, Tstg -65°C 150°C Note: Stresses greater than those listed under MAXIMUM RATINGS cause permanent damage device. This stress rating only functional operation device these other conditions above those indicated operational sections this specification implied. Exposure absolute maximum rating conditions extended periods affect reliability.
Recommended Operating Conditions(2)
Supply voltage High- level input voltage Low- level input voltage Input voltage Output voltage Active State State 3.0V 3.6V 2.3V 2.7V 1.8V Operating Data Retention Only 2.7V 3.6V 2.7V 3.6V ns/V Units
Output current IOH/IOL Input transistion rise fall rate(3) Operating free- temperature
Notes Absolute maximum must observed. Unused control inputs must held HIGH prevent them from floating. measured between 0.8V 2.0V, 3.0V.
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted)
Characteristics (2.7V<VDD 3.6V)
Parame HIGH Level Input Voltage Level Input Voltage -100µA HIGH Level Output Voltage -12mA -18mA -24mA 100µA Level Output Voltage 12mA 18mA 24mA IOFF Input Leakage Current STATE Output Leakage Power- Leakage Current Quiescent Supply Current Increase input 0.0V, 3.6V 3.6V (VI,VO) 3.6V (VI,VO) 3.6V 0.6V, Other inputs 0.55 Conditions Typ. Units
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Electrical Characteristics over Recommended Operating Free-Air Temperature Range
(unless otherwise noted) (continued from previous page)
Characteristics (2.3V 2.7V)
Parame HIGH Level Input Voltage Level Input Voltage 100µA HIGH Level Output Voltage 12mA 18mA 100µA Level Output Voltage 12mA 18mA IOFF Input Leakage Current STATE Output Leakage Power- Leakage Current Quiescent Supply Current 0.0V, 2.7V 3.6V (VI,VO) 3.6V (VI,VO) 3.6V Conditions Typ. Units
Characteristics (1.8V 2.3V)
Parame HIGH Level Input Voltage Level Input Voltage HIGH Level Output Voltage Level Output Voltage IOFF Input Leakage Current STATE Output Leakage 0.0V, 1.8V 3.6V Conditions Typ. Units
Power- Leakage Current (VI,VO) 3.6V Quiescent Supply Current (VI,VO) 3.6V
PS8160C
09/27/04
Dynamic Switching Characteristics
Symbol Parame Conditions +25°C Typical 0.25 0.25 Units
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Electrical Characteristics(1)
-40°C +85°C, 30pF, Symbol Parame 3.3V ±0.3V tPHL, tPLH tPZL, tPZH tPLZ, tPHZ tOSHL tOSLH Prop Delay Output Enable Time Output Disable Time Output Output Skew(2) 2.5V ±0.2V 1.8V Units
Notes 50pF approximatly 300ps maximum specification Skew defined absolute value difference between actual propagation delay separate outputs same device. specification applies outputs switching same direction, either HIGH (tOSHL) HIGH (tOSLH).
VOLP
Quiet Output Dynamic Peak
50pF, VIH= VDD, VIL=
VOLV
Quiet Output Dynamic Valley
50pF, VIH= VDD, VIL=
VOHV
Quiet Output Dynamic Valley
50pF, VIH= VDD, VIL=
Capacitance
Symbol
COUT
Parame
Input Capacitance Output Capacitance
Conditions
1.8V, 2.5V 3.3V, VDD, 1.8V, 2.5V 3.3V VDD, 10MHz 1.8V, 2.5V 3.3V
Typical
Units
Power Dissipation Capacitance
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Test Circuits Switching Waveforms
Parameter Measurement Information (VDD 1.8V 3.6V)
Open 50pF
(See Note
Switch Position
tPLZ/tPZL tPHZ/tPZH Open
From Output Under Test
Pulse Width
Low-High-Low Pulse High-Low-High Pulse VDD/2 VDD/2
Setup, Hold, Release Timing
Data Input Timing Input VDD/2 VDD/2
Propagaton Delay
Input tPLH Output tPHL tPLH tPHL
VDD/2 VDD/2
Notes: includes probe capacitance. Waveform output with internal conditions such that output except when disabled output control. Waveform output with internal conditions such that output HIGH except when disabled output control. input pulses supplied generators having following characteristics: MHz, 2ns, 2ns, measured from 90%, unless otherwise specified. outputs measured time with transition measurement.
Opposite Phase Input Transition
VDD/2
Enable Disable Timing
Output Control
(Active LOW)
VDD/2 tPZL VDD/2 +0.15V tPZH VDD/2 tPHZ -0.15V tPLZ
Output Waveform 2xVDD
(see Note
Output Waveform
(see Note
PS8160C
09/27/04
PI74VCX16244 16-Bit Buffer/Driver with 3-State Outputs
Packaging Mechanical: 48-pin TSSOP
.236 .244
.488 12.4 .496 12.6 .047 1.20 SEATING PLANE
.004 0.09 .008 0.20 0.45 .018 0.75 .030 .319
X.XX X.XX
DENOTES DIMENSIONS MILLIMETERS
.0197 0.50
.007 .010 0.17 0.27
.002 .006 0.05 0.15
Ordering Information
Ordering Code PI74VCX16244A PI74VCX16244AE Package Code Package Description 48-pin TSSOP Pb-free Green, 48-pin TSSOP
Notes: Thermal characteristics found company site www.pericom.com/packaging/
Pericom Semiconductor Corporation 1-800-435-2336 www.pericom.com
PS8160C 09/27/04
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