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PI74FCT251T (25 Series) PI74FCT2151T
PI74FCT151/2151/251T 8-INPUT PI74FCT151T MULTIPLEXER
Fast CMOS 8-Input Multiplexer
Product Features:
* PI74FCT151/251/2151T is 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 * Extremely low static power * Hysteresis on all inputs * Industrial operating temperature range: -40C to +85C * Packages available: - 16-pin 150-mil wide plastic QSOP (Q) - 16-pin 300-mil wide plastic SOIC (S) - 16-pin 150-mil wide plastic SOIC (W)
Product Description:
Pericom Semiconductor's PI74FCT series of logic circuits are produced in the Company's advanced 0.8 micron CMOS technology, achieving industry leading speed grades. The PI74FCT151T, PI74FCT251T, and PI74FCT2151T are highspeed 8-input multiplexers. They select one bit from a source of eight under the control of three select inputs. Both assertion and negation outputs are provided. The PI74FCT151/2151T has a common, active-LOW, Enable input (E). When E is LOW, data from one of eight inputs is directed to the complementary outputs based on the 3-bit code applied to the Select (S0-S2) inputs. The PI74FCT151/2151T can be used as a data routing device from one of eight sources. The PI74FCT251T has a common Active-LOW Output Enable (OE) input. When OE is LOW, data from one of eight inputs is directed to the complementary outputs. When OE is HIGH, both outputs are switched to a high-impedance state allowing multiplexer expansion by tying several outputs together.
Logic Block Diagram
I7
I6
I5 Z I4 Z I3
I2
I1
I0 FCT251 Only
S2
S1
S0
E for 151 OE for 251
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Product Pin Description
Pin Name I0-I7 S0-S2 E OE Z Z GND VCC Description Data Inputs Select Inputs Enable Input (Active LOW) FCT151/2151T Output Enable (Active LOW) FCT251T Data Output Inverted Data Output Ground Power
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PI74FCT151/2151/251T 8-INPUT MULTIPLEXER
Truth Table(1)
S2 X X L L L L H H H H S1 X X L L H H L L H H Inputs S0 X X L H L H L H L H Outputs E/OE(2) H H L L L L L L L L Z L(3) Z(4) I0 I1 I2 I3 I4 I5 I6 I7 Z H(3) Z(4) I0 I1 I2 I3 I4 I5 I6 I7
PI74FCT151/2151T Product Pin Configuration
I3 I2 I1 I0 Z Z * E or OE GND
1 2 3 4 5 6 7 8
16-PIN Q16 S16 W16
16 15 14 13 12 11 10 9
VCC I4 I5 I6 I7 S0 S1 S2
Notes: 1. E for 151/2151, OE for 251. 2. H = High Voltage Level L = Low Voltage Level X = Don't Care Z = High Impedance 3. 151/2151 ONLY. 4. 251 ONLY.
* E for 151/2151 only, OE for 251 only
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PI74FCT151/2151/251T 8-INPUT MULTIPLEXER
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 ..........................................................................................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 = 5V 5%)
Parameters Description VOH VOL VOL VIH VIL IIH IIL IOZH IOZL VIK IOS IOFF 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 Short Circuit Current Power Down Disable Input Hysteresis VCC = Min., IIN = -18 mA VCC = Max.(3), VOUT = GND VCC = GND, VOUT = 4.5V -60 -- 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 -0.7 -120 -- 200 100 IOH = -15.0 mA IOL = 48 mA IOL = 12 mA (25 series) 2.0 0.8 1 -1 1 -1 -1.2 Min. 2.4 Typ(2) 3.0 0.3 0.3 0.50 0.50 Max. Units V V V V V A A A A V mA A 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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PI74FCT151/2151/251T 8-INPUT MULTIPLEXER
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 E or OE = GND One Bit Toggling 50% Duty Cycle VCC = Max., Outputs Open fI = 10 MHZ 50% Duty Cycle E or OE = GND One Bit Toggling VIN = GND or VCC VIN = 3.4V(3) VIN = VCC VIN = GND Min. Typ(2) 0.1 0.5 0.15 Max. 500 2.0 0.25 Units A mA mA/ MHz
IC
Total Power Supply Current(6)
VIN = VCC VIN = GND VIN = 3.4V VIN = GND
3.2
6.5(5)
mA
3.5
7.5(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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PI74FCT151/2151/251T 8-INPUT MULTIPLEXER
PI74FCT151/2151T Switching Characteristics over Operating Range
151T/2151T Com. 151AT/2151AT Com. Max Min Max Min 151CT/2151CT Com. Max Unit
Parameters tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL
Description Propagation Delay Sn to Z Propagation Delay Sn to Z Propagation Delay E to Z Propagation Delay E to Z Propagation Delay In to Z Propagation Delay In to Z
Conditions(1) CL = 50 pF RL = 500
Min
1.5 1.5 1.5 1.5 1.5 1.5
9.0 10.5 7.0 9.5 6.5 7.5
1.5 1.5 1.5 1.5 1.5 1.5
6.6 6.8 5.6 5.8 5.2 5.5
1.5 1.5 1.5 1.5 1.5 1.5
5.6 5.8 4.8 5.0 4.4 4.7
ns ns ns ns ns ns
PI74FCT251T Switching Characteristics over Operating Range
251T Com.
(1)
251AT Com. Max Min Max
251CT Com. Min Max Unit
Parameters tPLH tPHL tPLH tPHL tPLH tPHL tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ
Description Propagation Delay Sn to Z Propagation Delay Sn to Z Propagation Delay In to Z Propagation Delay In to Z Output Enable Time OE to Z Output Disable Time(3) OE to Z Output Enable Time OE to Z Output Disable Time(3) OE to Z
Conditions CL = 50 pF RL = 500
Min
1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
9.0 11.0 7.0 7.0 9.0 7.5 9.0 7.0
1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
6.6 6.8 5.2 5.5 6.7 6.0 6.7 6.0
1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5
5.6 5.8 4.4 4.7 5.7 5.0 5.7 5.0
ns ns ns ns 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.
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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