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PI74FCT240T/241T/ 244T/540T/541T (25 ohmSeries) PI74FCT2240T/2241T/2244T/2541T
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321 21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
Fast CMOS Octal Buffer/Line Drivers
Product Features
* PI74FCT240/241/244/540/541T and PI74FCT2240/2241/2244/ 2541T are pin compatible with bipolar FASTTM Series at a higher speed and lower power consumption 25 series resistor on all outputs (FCT2XXX only) * TTL input and output levels * Low ground bounce outputs * Extremely low static power * Hysteresis on all inputs * Industrial operating temperature range: 40C to +85C Packages available: - 20-pin 173 mil wide plastic TSSOP (L) - 20-pin 209 mil wide plastic SSOP (H) - 20-pin 300 mil wide plastic DIP (P) - 20-pin 150 mil wide plastic QSOP (Q) - 20-pin 150 mil wide plastic TQSOP (R) - 20-pin 300 mil wide plastic SOIC (S) * Device models available upon request
Product Description
Pericom Semiconductor's PI74FCT series of logic circuits are produced in the Company's advanced 0.6/0.8 micron CMOS technology, achieving industry leading speed grades. All PI74FCT2XXX devices have a built-in 25 ohm series resistor on all outputs to reduce noise because of reflections, thus eliminating the need for an external terminating resistor. The PI74FCT240T/241T/244T/540T/541T and P174FCT2240T/ 2241T/2244/2541T are 8-bit wide driver circuits, designed to be used in applications requiring high-speed and high-output drive. Ideal applications would include bus drivers, memory drivers, address drivers, and system clock drivers. The PI74FCT540T and PI74FCT541/2541T provide similar driver capabilities, but have their pins physically grouped by function. All inputs are located on one side of the package, while outputs are on the opposite side, allowing for a much simpler and denser board layout.
Logic Block Diagrams PI74FCT240/2240T PI74FCT241/2241T PI74FCT244/2244T
241 Only OEA
PI74FCT540T PI74FCT541/2541T
OEA OEB
OEA OEB DA0
OEB* DA0
OA0
OA0
D0 D1
O0 O1
OB0
DB0 OA1
OB0
DB0 OA1
DA1 OB1
DA1 OB1
D2
O2
DB1 OA2
DB1 OA2
D3
O3
DA2 OB2
DA2 OB2
D4
O4
DB2 OA3
DB2 OA3
D5 D6
O5 O6
DA3 OB3
DA3 OB3
DB3
DB3
D7
O7
*OEB for 241T, *OEB for 244T,
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*Logic diagram shown for 540T. 541/2541T is the non-inverting option.
PS2011B 12/11/00
Product Pin Description
Pin Name OEA, OEB OEB(1) Dxx Oxx GND VCC Description 3-State Output Enable Inputs (Active LOW) 3-State Output Enable Input (Active HIGH) Inputs Outputs Ground Power
PI74FCT240/2240T Product Pin Configuration
OEA DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 GND Vcc OEB OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
PI74FCT241/2241/244/2244T Product Pin Configuration
OEA DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 GND
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11
PI74FCT540/541/2541T Product Pin Configuration
OEA D0 D1 D2 D3 D4 D5 D6 D7 GND
1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11
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PI74FCT240T/241T/244T/540T/541T (25 ohm Series) PI74FCT2240T/2241T/2244T/2541T Octal Buffer/Line Drivers Truth Table
OEA L L H Inputs(1) OEB OEB(2) L H L H H L D L H X Outputs(1) 240 241 244 540 541 H L L H L L H H L H Z Z Z Z Z
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance 2. OEB for 241 only.
1 20 2 19 3 20-Pin 18 H20 17 4 L20 16 5 P20 15 6 Q20 14 7 R20 13 8 S20 12 9 10 11
20-Pin H20 L20 P20 Q20 R20 S20
Vcc OEB OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
*OEB for 241T, OEB for 244T
20-Pin H20 L20 P20 Q20 R20 S20
Vcc OEB O0* O2* O2* O3* O4* O5* O6* O7*
*Ox for 540T, Ox for 541T 2
PS2011B 12/11/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT240T/241T/244T/540T/541T (25 ohm Series) PI74FCT2240T/2241T/2244T/2541T Octal Buffer/Line Drivers
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 ................................................................................... 0.5W 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 5%) Parameters Description VOH VOL VOL VIH VIL IIH IIL IOZH IOZL VIK IOFF IOS VH Output HIGH Voltage Output LOW Current Output LOW Current Input HIGH Voltage Input LOW Voltage Input HIGH Current Input LOW Current High Impedance Output Current Clamp Diode Voltage Power Down Disable Short Circuit Current Input Hysteresis VCC = Min., IIN = -18mA VCC = GND, VOUT = 4.5V VCC = Max. , VOUT = GND
(3)
Test Conditions(1) VCC = Min., VIN = VIH or VIL VCC = Min., VIN = VIH or VIL VCC = Min., VIN = VIH or VIL Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VCC = Max. VCC = MAX. VIN = VCC VIN = GND VOUT = 2.7V VOUT = 0.5V IOH = -15.0mA IOL = 64mA IOL = 12mA (25Series)
Min. Typ(2) Max. Units 2.4 3.0 0.3 0.3 2.0 0.8 1 -1 1 -1 -0.7 -- -60 -- -120 200 -1.2 100 0.55 0.50 V V V V V A A A A V A mA mV
Capacitance (TA = 25C, f = 1 MHz)
Parameters(4) CIN COUT Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ 6 8 Max. 10 12 Units pF pF
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. 4. This parameter is determined by device characterization but is not production tested.
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PS2011B
12/11/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT240T/241T/244T/540T/541T (25 ohm Series) PI74FCT2240T/2241T/2244T/2541T Octal 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) VCC = Max. VCC = Max. VCC = Max., Outputs Open OEA = OEB = GND or OEA = GND, OEB = VCC One Bit Toggling 50% Duty Cycle VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle OEA = OEB = GND or OEA = GND, OEB = VCC One Bit Toggling VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle OEA = OEB = GND or OEA = GND, OEB = VCC Eight Bits Toggling Test Conditions(1) VIN = GND or VCC VIN = 3.4V(3) VIN = VCC VIN = GND Min. Typ(2) 0.1 0.5 0.15 Max. 500 2.5 0.25 Units A mA mA/ MHz
IC
Total Power Supply Current(6)
VIN = VCC VIN = GND
1.5
3.5(5)
mA
VIN = 3.4V VIN = GND VIN = VCC VIN = GND
1.8
4.5(5)
3.0
6.0(5)
VIN = 3.4V VIN = GND
5.0
14.0(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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PS2011B
12/11/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT240T/241T/244T/540T/541T (25 ohm Series) PI74FCT2240T/2241T/2244T/2541T Octal Buffer/Line Drivers
PI74FCT240/2240T Switching Characteristics over Operating Range
240T/2240T Com. Min Max 1.5 1.5 1.5 8.0 10.0 9.5 240AT/2240AT 240CT/2240CT Com. Com. Min Max Min Max 1.5 1.5 1.5 4.8 6.2 5.6 1.5 1.5 1.5 4.3 5.8 5.2 240DT Com. Min Max Units 1.5 1.5 1.5 3.6 4.8 4.0 ns ns ns
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay DN to ON Output Enable Time OEX to ON Output Disable Time(3) OEX to ON
Conditions(1) CL = 50pF RL = 500
PI74FCT241/2241T Switching Characteristics over Operating Range
241T/2241T Com. Min Max 1.5 1.5 1.5 6.5 8.0 7.0 241AT/2241AT 241CT/2241CT Com. Com. Min Max Min Max 1.5 1.5 1.5 4.8 6.2 5.6 1.5 1.5 1.5 4.1 5.8 5.2 241DT Com. Min Max Units 1.5 1.5 1.5 3.6 4.8 4.0 ns ns ns
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay DN to ON Output Enable Time OEA/OEB to ON Output Disable Time(3) OEA/OEB to ON
Conditions(1) CL = 50pF RL = 500
PI74FCT244/2244T Switching Characteristics over Operating Range
244T/2244T Com. Min Max 1.5 1.5 1.5 6.5 8.0 7.0 244AT/2244AT 244CT/2244CT Com. Com. Min Max Min Max 1.5 1.5 1.5 4.8 6.2 5.6 1.5 1.5 1.5 4.1 5.8 5.2 244DT Com. Min Max 1.5 1.5 1.5 3.6 4.8 4.0 ns ns ns
Parameters Description Units tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay DN to ON Output Enable Time OEX to ON Output Disable Time(3) OEX to ON
Conditions(1) CL = 50pF RL = 500
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.
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PS2011B
12/11/00
21098765432121098765432109876543210987654321210987654321098765432109876543212109876543210987654321098765432121098765432109876543210987654321
PI74FCT240T/241T/244T/540T/541T (25 ohm Series) PI74FCT2240T/2241T/2244T/2541T Octal Buffer/Line Drivers
PI74FCT540T Switching Characteristics over Operating Range
540T Com. Min Max 1.5 1.5 1.5 5.5 10.0 6.0 540AT Com. Min Max 1.5 1.5 1.5 4.8 6.2 5.6 540CT Com. Min Max 1.5 1.5 1.5 4.3 5.8 5.2 540DT Com. Min Max Units 1.5 1.5 1.5 3.8 5.2 5.2 ns ns ns
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay DN to ON Output Enable Time OEX to ON Output Disable Time(3) OEX to ON
Conditions(1) CL = 50pF RL = 500
PI74FCT541/2541T Switching Characteristics over Operating Range
541T/2541T Com. Min Max 1.5 1.5 1.5 6.0 9.5 6.5 541AT/2541AT 541CT/2541CT Com. Com. Min Max Min Max 1.5 1.5 1.5 4.8 6.2 5.6 1.5 1.5 1.5 4.1 5.8 5.2 541DT Com. Min Max Units 1.5 1.5 1.5 3.8 5.2 5.2 ns ns ns
Parameters Description tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay DN to ON Output Enable Time OEX to ON Output Disable Time(3) OEX to ON
Conditions(1) CL = 50pF RL = 500
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.
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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PS2011B 12/11/00

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