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PI74FCT16244/162244/162H244T PI74FCT16244T 16-BIT BUFFER/LINE DRIVERS
PI74FCT162244T PI74FCT162H244T
Product Features:
Common Features: * PI74FCT16244T, PI74FCT162244T and PI74FCT162H244T are high-speed, low power devices with high current drive. * Vcc = 5V 10% * Hysteresis on all inputs * Packages available: - 48-pin 240 mil wide plastic TSSOP (A48) - 48-pin 300 mil wide plastic SSOP (V48) * Device models available upon request. PI74FCT16244T Features: * High output drive: IOH = -32 mA; IOL = 64 mA * Power off disable outputs permit "live insertion" * Typical VOLP (Output Ground Bounce) < 1.0V at VCC = 5V, TA = 25C PI74FCT162244T Features: * Balanced output drivers: 24 mA * Reduced system switching noise * Typical VOLP (Output Ground Bounce) < 0.6V at VCC = 5V, TA = 25C PI74FCT162H244T Features: * Bus Hold retains last active bus state during 3-state * Eliminates the need for external pull-up resistors
Fast CMOS 16-Bit Buffer/Line Drivers
Product Description:
Pericom Semiconductor's PI74FCT series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74FCT16244T, PI74FCT162244T, and PI74FCT162H244T 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 three-state controls to operate in a Quad-Nibble, Dual-Byte, or a single 16-bit word mode. The PI74FCT16244T output buffers are designed with a Power-Off disable allowing "live insertion" of boards when used as backplane drivers. The PI74FCT162244T has 24 mA 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. The PI74FCT162H244T has "Bus Hold" which retains the input's last state whenever the input goes to high-impedance preventing "floating" inputs and eliminating the need for pull-up/down resistors.
Logic Block Diagram
1OE 3OE
1A0
1Y0
3A0
3Y0
1A1
1Y1
3A1
3Y1
1A2
1Y2
3A2
3Y2
1A3
1Y3
3A3
3Y3
2OE
4OE
2A0
2Y0
4A0
4Y0
2A1
2Y1
4A1
4Y1
2A2
2Y2
4A2
4Y2
2A3
2Y3
4A3
4Y3
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PS2031A 03/11/96
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PI74FCT16244/162244/162H244T 16-BIT BUFFER/LINE DRIVERS
Product Pin Description
Pin Name xOE xAx xYx GND VCC Note: 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
1. For the PI74FCT162H244T, these pins have "Bus Hold". All other pins are standard, outputs, or I/Os.
NOTE: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance
Product 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
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
48-PIN V48 A48
38 37 36 35 34 33 32 31 30 29 28 27 26 25
GND
3Y2 3Y3
GND
3A2 3A3
VCC
4Y0 4Y1
VCC
4A0 4A1
GND
4Y2 4Y3 4OE
GND
4A2 4A3 3OE
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PS2031A 03/11/96
765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT16244/162244/162H244T 16-BIT BUFFER/LINE DRIVERS
Maximum Ratings
(Above which the useful life may be impaired. For user guidelines, not tested.) Storage Temperature ................................................................. -55C to +125C 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.
DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 5.0V 10%)
Parameters Description VIH VIL IIH IIH IIH IIH IIL IIL IIL IIL IBHH IBHL IOZH(6) IOZL(6) VIK IOS IO VH Input HIGH Voltage Input LOW Voltage Input HIGH Current Input HIGH Current Input HIGH Current Input HIGH Current Input LOW Current Input LOW Current Input LOW Current Input LOW Current Bus Hold Sustain 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(4), VCC = Max. Standard I/O(4), VCC = Max. Bus Hold Input(5), VCC = Max. Bus Hold I/O(5), VCC = Max. Standard Input(4), VCC = Min. Standard I/O(4), VCC = Min. Bus Hold Input(5), VCC = Min. Bus Hold I/O(5), VCC = Min. Bus Hold Input(5), VCC = Min. VCC = Max. VCC = Max. VCC = Min., IIN = -18 mA VCC = Max.(3), VOUT = GND VCC = Max.(3), VOUT = 2.5V Min. 2.0 VIN = VCC VIN = VCC VIN = VCC VIN = VCC VIN = GND VIN = GND VIN = GND VIN = GND VIN = 2.0V VIN = 0.8V VOUT = 2.7V VOUT = 0.5V 0.8 1 1 100 100 -1 -1 100 100 -50 +50 1 -1 -1.2 -200 -180 Typ(2) Max. Units V V A A A A A A A A A A A V mA mA mV
-80 -50
-0.7 -140 100
Notes: 1. For conditions show as Max. or Min., 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. 4. The test limit for this parameter is 5 A at TA = -55C. 5. Pins with Bus Hold are identified in the pin description. 6. This specification does not apply to bi-directional functionalities with Bus Hold.
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PS2031A 03/11/96
765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT16244/162244/162H244T 16-BIT BUFFER/LINE DRIVERS
PI74FCT16244T Output Drive Characteristics (Over the Operating Range)
Parameters Description VOH Output HIGH Voltage Test Conditions(1) VCC = Min., VIN = VIH or VIL IOH = -3.0 mA IOH = -15.0 mA IOH = -32.0 mA IOL = 64 mA 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
PI74FCT162244T/162H244T Output Drive Characteristics (Over the Operating Range)
Parameters Description VOH VOL IODL IODH Output HIGH Voltage Output LOW Voltage Output LOW Current Output HIGH Current Test Conditions(1) VCC = Min., VIN = VIH or VIL IOH = -24.0 mA VCC = Min., VIN = VIH or VIL IOL = 24 mA 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 -150 Units V V mA mA
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) CIN COUT Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ 4.5 5.5 Max. 6 8 Units pF pF
Notes: 1. For conditions show as Max. or Min., 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. 4. This parameter is determined by device characterization but is not production tested.
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PS2031A 03/11/96
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PI74FCT16244/162244/162H244T 16-BIT BUFFER/LINE DRIVERS
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 conditions shown as Max. or Min., 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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PS2031A 03/11/96
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PI74FCT16244/162244/162H244T 16-BIT BUFFER/LINE DRIVERS
PI74FCT16244T Switching Characteristics over Operating Range
16244T Com.
(1)
16244AT Com. Min Max
16244CT Com. Min Max
16244DT Com. Min Max
16244ET Com. Min Max Unit
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Description Propagation Delay to XYX Output Enable Time XOE to XAX or XYX Output Disable Time(3) XOE to XAX or XYX Output Skew(4)
XAX
Conditions CL = 50 pF RL = 500
Min
Max
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 --
3.8 4.8 4.0 0.5
1.5 1.5 1.5 --
3.2 4.4 3.6 0.5
ns ns ns ns
PI74FCT162244T Switching Characteristics over Operating Range
162244T Com.
(1)
162244AT Com. Min Max
162244CT Com. Min Max
162244DT Com. Min Max
162244ET Com. Min Max Unit
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Description Propagation Delay to XYX Output Enable Time XOE to XAX or XYX Output Disable Time(3) XOE to XAX or XYX Output Skew(4)
XAX
Conditions CL = 50 pF RL = 500
Min
Max
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 --
3.8 4.8 4.0 0.5
1.5 1.5 1.5 --
3.2 4.4 3.6 0.5
ns ns ns ns
PI74FCT162H244T Switching Characteristics over Operating Range
162H244T Com.
(1)
162H244AT 162H244CT 162H244DT 162H244ET Com. Min Max Com. Min Max Com. Min Max Com. Min Max Unit
Parameters tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o)
Description Propagation Delay to XYX Output Enable Time XOE to XAX or XYX Output Disable Time(3) XOE to XAX or XYX Output Skew(4)
XAX
Conditions CL = 50 pF RL = 500
Min
Max
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 --
3.8 4.8 4.0 0.5
1.5 1.5 1.5 --
3.2 4.4 3.6 0.5
ns ns ns ns
Notes: 1. See test circuit and wave forms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not production tested. 4. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Pericom Semiconductor Corporation 2380 Bering Drive * San Jose, CA 95131 * 1-800-435-2336 * Fax (408) 435-1100 * http://www.pericom.com
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