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PI74FCT16244T PI74FCT162244T
Fast CMOS 16-Bit Buffer/Line Drivers
Features
Common Features * High-speed, low-power devices with high-current drive VCC = 5V 10% * Hysteresis on all inputs * Device models available upon request PI74FCT16244T Features * High output drive: IOH = -32mA; IOL = 64mA * Power off disable outputs permit "live insertion" * Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25C PI74FCT162244T Features * Balanced output drivers: 24mA * Reduced system switching noise * Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25C * Packaging (Pb-free & Green available): - 48-pin 240-mil wide plastic TSSOP (A) - 48-pin 300-mil wide plastic SSOP (V) - 48-pin 173-mil wide plastic TVSOP (K)
Description
Pericom Semiconductor's PI74FCT16244T and PI74FCT162244T are non-inverting 16-bit buffer/line drivers designed for applications driving high capacitance loads and low impedance backplanes. These high-speed, low power devices offer bus/ backplane interface capability and a flow-through organization for ease of board layout. These devices are designed with threestate controls to operate in a Quad-Nibble, Dual-Byte, or a single 16-bit word mode. The PI74FCT16244T output buffers are designed with a PowerOff disable allowing "live insertion" of boards when used as backplane drivers. The PI74FCT162244T has 24mA balanced output drivers. It is designed with current limiting resistors at its outputs to control the output edge rate resulting in lower ground bounce and undershoot. This eliminates the need for external terminating resistors for most interface applications.
Block Diagram
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PI74FCT16244T/162244T 16-Bit Buffer/Line Drivers
Product Pin Description
Pin Name xOE xAx xYx GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs(1) 3-State Outputs Ground Power
Truth Table
Inputs(1)
XOE
L L H
xAx L H X
Outputs(1) xYx L H Z
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance
Pin Configuration
1OE 1Y0 1Y1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25
2OE 1A0 1A1
GND
1Y2 1Y3
GND
1A2 1A3
VCC
2Y0 2Y1
VCC
2A0 2A1
GND
2Y2 2Y3 3Y0 3Y1
GND
2A2 2A3 3A0 3A1
GND
3Y2 3Y3
GND
3A2 3A3
VCC
4Y0 4Y1 GND 4Y2 4Y3 4OE
VCC
4A0 4A1 GND 4A2 4A3 3OE
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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.
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 5.0V 10%)
Parameters Description VIH VIL IIH IIH IIL IIL IOZH IOZL VIK IOS IO VH Input HIGH Voltage Input LOW Voltage Input HIGH Current Input HIGH Current Input LOW Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Short Circuit Current Output Drive Current Input Hysteresis Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level Standard Input, VCC = Max. Standard I/O, VCC = Max. Standard Input , VCC = Min. Standard I/O, VCC = Min. VCC = Max. VCC = Max. VCC = Min., IIN = -18mA VCC = Max.(3), VOUT = GND VCC = Max.(3), VOUT = 2.5V Min. 2.0 VIN = VCC VIN = VCC VIN = GND VIN = GND VOUT = 2.7V VOUT = 0.5V -80 -50 -0.7 -140 100 0.8 1 1 -1 -1 1 -1 -1.2 -320 -180 Typ.(2) Max. Units V V A A A A A A V mA mA m V
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 = 5.0V, +25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
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PI74FCT16244T Output Drive Characteristics (Over the Operating Range)
Parameters VOH Description Output HIGH Voltage Test Conditions(1) VCC = Min., VIN = VIH or VIL IOH = -3.0mA IOH = -15.0mA IOH = -32.0mA IOL = 64mA Min. 2.5 2.4 2.0 Typ.(2) 3.5 3.5 3.0 0.2 Max. Units V
VOL IOFF
Output LOW Voltage Power Down Disable
VCC = Min., VIN = VIH or VIL VCC = 0V, VIN or VOUT - 4.5V
0.55 100
V A
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 = 5.0V, +25C ambient and maximum loading.
PI74FCT162244T Output Drive Characteristics (Over the Operating Range)
Parameters VOH VOL IODL IODH Description Output HIGH Voltage Output LOW Voltage Output LOW Current Output HIGH Current Test Conditions(1) VCC = Min., VIN = VIH or VIL IOH = -24.0mA VCC = Min., VIN = VIH or VIL IOL = 24mA VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3) VCC = 5V, VIN = VIH OR VIL, VOUT = 1.5V(3) Min. 2.4 60 -60 Typ.(2) 3.3 0.3 115 -115 Max. 0.55 150 -160 Units V V mA mA
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 = 5.0V, +25C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the test should not exceed one second.
Capacitance (TA = 25C, f = 1 MHz)
Parameters(1) CIN COUT Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ 4.5 5.5 Max. 7.5 8 Units pF pF
Notes: 1. This parameter is determined by device characterization but is not production tested.
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Power Supply Characteristics
Parameters Description ICC ICC ICCD Quiescent Power Supply Current Supply Current per Input @ TTL HIGH Supply Current per Input per MHz(4) Test Conditions(1) VCC = Max. VCC = Max. VCC = Max., Outputs Open XOE = GND One Bit Toggling 50% Duty Cycle VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle XOE = GND One Bit Toggling VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle XOE = GND 16 Bits Toggling VIN = GND or VCC VIN = 3.4V(3) VIN = VCC VIN = GND Min. Typ(2) 0.1 0.5 60 Max. 500 1.5 100 Units A mA A/ MHz
IC
Total Power Supply Current(6)
VIN = VCC VIN = GND
0.6
1.5(5)
mA
VIN = 3.4V VIN = GND VIN = VCC VIN = GND
0.9 2.4
2.3(5) 4.5(5)
VIN = 3.4V VIN = GND
6.4
16.5(5)
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at Vcc = 5.0V, +25C ambient. 3. Per TTL driven input (VIN = 3.4V); all other inputs at Vcc or GND. 4. This parameter is not directly testable, but is derived for use in Total Power Supply Calculations. 5. Values for these conditions are examples of the Icc formula. These limits are guaranteed but not tested. 6. IC =IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fCP/2 + fINI) ICC = Quiescent Current ICC = Power Supply Current for a TTL High Input (VIN = 3.4V) DH = Duty Cycle for TTL Inputs High NT = Number of TTL Inputs at DH ICCD = Dynamic Current Caused by an Input Transition Pair (HLH or LHL) fCP = Clock Frequency for Register Devices (Zero for Non-Register Devices) fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz.
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PI74FCT16244T/162244T 16-Bit Buffer/Line Drivers PI74FCT16244T Switching Characteristics over Operating Range
16244T Com. 16244AT Com. 16244CT Com. 16244ET Com.
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Description Propagation Delay XAX to XYX Output Enable Time XOE to XYX
(1)
Conditions CL = 50 pF RL = 500
Min Max Min Max Min Max Min Max Units
1.5 1.5 1.5
6.5 8.0 7.0 0.5
1.5 1.5 1.5
4.8 6.2 5.6 0.5
1.5 1.5 1.5
4.1 5.8 5.2 0.5
1.5 1.5 1.5
3.2 4.4 4.3 0.5
ns ns ns ns
Output Disable Time(2) XOE to XYX Output Skew(3)
Notes: 1. Minimum limits are guaranteed but not tested on Propagation Delays. 2. This parameter is guaranteed but not production tested. 3. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
PI74FCT162244T Switching Characteristics over Operating Range
162244T Com. 162244AT Com. 162244CT Com. 162244ET Com.
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Description Propagation Delay(1) XAX to XYX Output Enable Time XOE to XYX Output Disable Time(2) XOE to XYX Output Skew(3)
Conditions CL = 50 pF RL = 500
Min Max Min Max Min Max Min Max Units
1.5 1.5 1.5
6.5 8.0 7.0 0.5
1.5 1.5 1.5
4.8 6.2 5.6 0.5
1.5 1.5 1.5
4.1 5.8 5.2 0.5
1.5 1.5 1.5
3.2 4.4 4.0 0.5
ns ns ns ns
Notes: 1. Minimum limits are guaranteed but not tested on Propagation Delays. 2. This parameter is guaranteed but not production tested. 3. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
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PI74FCT16244T/162244T 16-Bit Buffer/Line Drivers Packaging Mechanical: 48-Pin, 240 mil wide Plastic TSSOP (A)
Packaging Mechanical: 48-pin 300 mil wide plastic SSOP (V)
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
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PI74FCT16244T/162244T 16-Bit Buffer/Line Drivers Packaging Mechanical: 48-pin 173-mil wide plastic TVSOP (K)
48
.169 .177
4.30 4.50 .0035 .008 0.09 0.20
1
.378 9.60 .386 9.80
.031 .041 0.80 1.05
0.45 .018 0.75 .030 .252 BSC 6.4 SEATING PLANE
.016 BSC 0.40
.0051 .009 0.13 0.23
.002 .006 0.05 0.15
Max. .047 1.20
PI74FCT16244T Ordering Information
Ordering Code PI74FCT16244TA PI74FCT16244TAE PI74FCT16244TV PI74FCT16244TVE PI74FCT16244TK PI74FCT16244TKE PI74FCT16244ATA PI74FCT16244ATAE PI74FCT16244ATV PI74FCT16244ATVE PI74FCT16244CTA PI74FCT16244CTAE PI74FCT16244CTV PI74FCT16244CTVE Package Code A A V V K K A A V V A A V V Speed Grade Blank Blank Blank Blank Blank Blank A A A A C C C C Package Type 48-pin 240-mil wide TSSOP Pb-free & Green, 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP Pb-free & Green, 48-pin 300-mil wide SSOP 48-pin 173-mil wide TVSOP Pb-free & Green, 48-pin 173-mil wide TVSOP 48-pin 240-mil wide TSSOP Pb-free & Green, 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP Pb-free & Green, 48-pin 300-mil wide SSOP 48-pin 240-mil wide TSSOP Pb-free & Green, 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP Pb-free & Green, 48-pin 300-mil wide SSOP
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PI74FCT162244T Ordering Information
Ordering Code PI74FCT162244TA PI74FCT162244TAE PI74FCT162244TV PI74FCT162244TVE PI74FCT162244ATA PI74FCT162244ATAE PI74FCT162244ATV PI74FCT162244ATVE PI74FCT162244CTA PI74FCT162244CTV PI74FCT162244CTK PI74FCT162244CTKE Package Code A A V V A A V V A V K K Speed Grade Blank Blank Blank Blank A A A A C C C C Package Type 48-pin 240-mil wide TSSOP Pb-free & Green, 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP Pb-free & Green, 48-pin 300-mil wide SSOP 48-pin 240-mil wide TSSOP Pb-free & Green, 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP Pb-free & Green, 48-pin 300-mil wide SSOP 48-pin 240-mil wide TSSOP 48-pin 300-mil wide SSOP 48-pin 173-mil wide TVSOP Pb-free & Green, 48-pin 173-mil wide TVSOP
Notes: * Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ * E = Pb-free & Green * Adding an X suffix = Tape/Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * www.pericom.com
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