View PI74FCT3244_508004.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

PI74FCT3244
Fast CMOS 3.3V 8-Bit Buffer/Line Driver
Features
* * * * * * * * * * Advanced Low Power CMOS operation Compatible with LVC class of products Compatible with industry standard octal pinouts Excellent output drive capability: Balanced Drives (24mA sink and source) Can serve as a 5V to 3V translator Inputs can be driven by 3.3 V or 5V devices Low ground bounce outputs Hysteresis on all inputs Industrial operating temperature range: -40C to +85C Packaging: - 20-pin 173-mil wide plastic TSSOP (L) - 20-pin 150-mil wide plastic QSOP (Q) - 20-pin 300-mil wide plastic SOIC (S)
Description
Pericom Semiconductor's PI74FCT3 series of logic circuits are produced in the Company's advanced 0.6 micron CMOS technology, achieving industry leading speed grades. The PI74FCT3244 is an 8-bit buffer/line driver designed for driving high capacitive memory loads. With its balanced-drive characteristics, this high-speed, low power device provides lower ground bounce, transmission line matching of signals, fewer line reflections and lower EMI and RFI effects. This makes it ideal for driving on-board buses and transmission lines. The PI74FCT3244 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.
Block Diagram
OEA OEB
DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3 OA0 D B0 OA1 D B1 OA2 D B2 OA3 D B3
Pin Configuration
OEA
DA0 OB0 DA1 OB1 DA2 OB2 DA3 OB3
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
VCC OEB
OA0 DB0 OA1 DB1 OA2 DB2 OA3 DB3
GND
1
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver 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.................................................................................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.
Truth Table(1)
OEA L L H Inputs OEB L L H DXX L H X Outputs OXX L H Z
Pin Description
Pin Name OEA, OEB DXX OXX GND VCC Description 3-State Output Enable Inputs (Active LOW) Inputs Outputs Ground Power
Note: 1. H = High Voltage Level, X = Don't Care, L = Low Voltage Level, Z = High Impedance
2
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver DC Electrical Characteristics (Over the Operating Range, TA = -40C to +85C, VCC = 2.7V to 3.6V)
Parameters VIH VIL IIH IIL IOZH IOZL VIK IODH IODL Description Input HIGH Voltage (Input pins) Input HIGH Voltage (I/O pins) Input LOW Voltage (Input and I/O pins) Input HIGH Current (Input pins) Input HIGH Current (I/O pins) Input LOW Current (Input pins) Input LOW Current (I/O pins) High Impedance Output Current (3-State Output pins) Clamp Diode Voltage Output HIGH Current Output LOW Current Test Conditions(1) Guaranteed Logic HIGH Level Guaranteed Logic LOW Level VCC = Max. VCC = Max. VCC = Max. VCC = Max. VCC = Max. VCC = Max. VIN = 5.5V VIN = VCC VIN = GND VIN = GND VOUT = 5.5V VOUT = GND Min. 2.2 2.0 -0.5 -- -- -- -- -- -- -- -36 50 VCC-0.2 2.4 2.4(5) 2.0 -- -- -- -60 -- Typ.(2) -- -- -- -- -- -- -- -- -- -0.7 -60 90 -- 3.0 3.0 -- -- 0.2 0.3 -85 150 Max. 5.5 5.5 0.8 1 1 1 1 1 1 -1.2 -110 mA 200 -- -- -- -- 0.2 0.4 0.5 -240 100 -- mA A mV V V A V Units
VCC = Min., IIN = -18mA VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) VCC = 3.3V, VIN = VIH or VIL, VO = 1.5V(3) VCC = Min., VIN = VIH or VIL VCC = 3.0V, VIN = VIH or VIL VCC = Min., VIN = VIH or VIL VCC = Max.(3), V
OUT
IOH = -0.1mA IOH = -3mA IOH = -8mA IOH = -24mA IOL = 0.1mA IOL = 16mA IOL = 24mA = GND
VOH
Output HIGH Voltage
VOL IOS IOFF VH
Output LOW Voltage Short Circuit Current(4)
Power Down Disable Input Hysteresis
VCC = 0V, VIN or VOUT 4.5V
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 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 guaranteed but not tested. 5. VOH = VCC - 0.6V at rated current.
Capacitance (TA = 25C, f = 1 MHz)
Parameters(1) Description Input Capacitance Output Capacitance Test Conditions VIN = 0V VOUT = 0V Typ. 4.5 5.5 Max. 6 8 Units pF CIN COUT
Note: 1. This parameter is determined by device characterization but is not production tested.
3
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Power Supply Characteristics
Parameters ICC ICC Description Quiescent Power Supply Current Quiescent Power Supply Current, TTL Inputs HIGH Dynamic Power Supply(4) VCC = Max. VCC = Max. VCC = Max., Outputs Open OEX = GND One Bit Toggling 50% Duty Cycle VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle OEX = GND One Bit Toggling VCC = Max., Outputs Open fI = 2.5 MHZ 50% Duty Cycle OEX = GND 8 Bits Toggling Test Conditions(1) VIN = GND or VCC VIN = VCC - 0.6V(3) Min. Typ.(2) 0.1 Max. 10 500 Units
A
A
ICCD
VIN = VCC VIN = GND
95
100
A/ MHz
VIN = VCC - 0.6V VIN = GND
0.97
2.3
IC
Total Power Supply Current(6)
mA VIN = VCC - 0.6V VIN = GND 4.7(5)
1.9
Notes: 1. For Max. or Min. conditions, use appropriate value specified under Electrical Characteristics for the applicable device. 2. Typical values are at VCC = 3.3V, +25C ambient. 3. Per TTL driven input; 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 =IQUIECSENT + IINPUTS + IDYNAMIC IC = ICC + ICC DHNT + ICCD (fCP/2 + fINI) ICC = Quiescent Current (ICCL, ICCH and ICCZ) ICC = Power Supply Current for a TTL High Input 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) NCP = Number of Clock Inputs at fCP fI = Input Frequency NI = Number of Inputs at fI All currents are in milliamps and all frequencies are in megahertz.
4
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Switching Characteristics over Operating Range(1)
FCT3244 Parameters tPHL tPHL tPZH tPZL tPHZ tPLZ tSK(o) Description Conditions(2) 1.5 CL = 50pF RL = 500 1.5 1.5 Com. Min.(3) Propagation Delay, DXX to OXX Output Enable Time, OEX to OXX Output Disable Time(4), OEX to OXX Output Skew(5) Max. 4.1 5.8 5.2 0.5 ns Units
Notes: 1. Propagation Delays and Enable/Disable times are with VCC = 3.3V 0.3V, normal range. For VCC = 2.7V, extended range, all Propagation Delays and Enable/Disable times should be degraded by 20%. 2. See test circuit and wave forms. 3. Minimum limits are guaranteed but not tested on Propagation Delays. 4. This parameter is guaranteed but not production tested. 5. Skew between any two outputs, of the same package, switching in the same direction. This parameter is guaranteed by design.
Packaging Mechanical: 20-pin TSSOP (L)
20
.169 .177
4.3 4.5
1
.252 .260 6.4 6.6
.004 0.09 .008 0.20
.047 1.20 Max
SEATING PLANE
0.45 0.75
.018 .030
.238 .269
.0256 BSC 0.65
.007 .012 0.19 0.30
.002 0.05 .006 0.15
6.1 6.7
X.XX X.XX
DENOTES CONTROLLING DIMENSIONS IN MILLIMETERS
5
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Packaging Mechanical: 20-pin QSOP (Q)
20
.008 0.20 MIN.
.150 .157
3.81 3.99
Guage Plane
.008 .013 0.20 0.33
1
.337 8.56 .344 8.74
.010 0.254
Detail A
.016 .035 0.41 0.89
.041 1.04 REF
0-6
.058 REF 1.47
.053 .069
1.35 1.75
SEATING PLANE
.015 x 45 0.38
Detail A
.007 .010
0.178 0.254
.016 .050
.025 BSC 0.635
0.41 1.27
.008 0.203 .012 0.305
.004 0.101 .010 0.254
.228 .244 5.79 6.19
X.XX DENOTES DIMENSIONS X.XX IN MILLIMETERS
Packaging Mechanical: 20-pin QSOP (Q)
20
.2914 .2992
7.40 7.60
.010 .029
0.254 x 45 0.737
1
.496 12.60 .511 12.99
0-8
0.41 .016 1.27 .050
.0091 .0125
0.23 0.32
.020 0.508 REF .030 0.762
.0926 .1043
2.35 2.65
SEATING PLANE
.394 .419 10.00 10.65
.050 BSC 1.27
.013 .020 0.33 0.51
.0040 .0118
0.10 0.30
X.XX DENOTES CONTROLLING X.XX DIMENSIONS IN MILLIMETERS
6
PS7067G
08/02/04
PI74FCT3244 3.3V 8-Bit Buffer/Line Driver Ordering Information
Ordering Code PI74FCT3244L PI74FCT3244Q PI74FCT3244S Package Code L Q S Package Description 20-pin 173-mil wide plastic TSSOP 20-pin 150-mil wide plastic QSOP 20-pin 300-mil wide plastic SSOP
Notes: 1. Thermal characteristics can be found on the company web site at www.pericom.com/packaging/ 2. X = Tape/Reel
Pericom Semiconductor Corporation * 1-800-435-2336 * http://www.pericom.com
7
PS7067G 08/02/04

▲Up To Search▲

Price & Availability of PI74FCT3244

	To Download PI74FCT3244 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .