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PI74FCT623T
Fast CMOS Octal Bus Transceiver (3-State)
Product Features
* PI74FCT623T is pin compatible with bipolar FASTTM Series at a higher speed and lower power consumption * TTL input and output levels * 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 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)
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. The PI74FCT623T is an 8-bit wide non-inverting octal transceiver designed with 3-state bus-driving outputs in both the send and receive directions. Designed for asynchronous two-way operation between data buses, the control function allows for maximum flexibility in timing.
Logic Block Diagram
GBA GAB
Product Pin Configuration
GAB A0 A1 A2 A3 A4 A5 A6 A7 GND
1 20 2 19 3 20-Pin 18 4 L, P, 17 5 Q, R, 16 6 15 S 7 14 8 13 9 12 10 11
Vcc GBA B0 B1 B2 B3 B4 B5 B6 B7
A0
B0
A1
B1
A2
B2
Product Pin Description
Pin Name GBA, GAB A0-A7 B0-B7 GND VCC Description Enable Outputs A Bus Inputs or 3-State Outputs B Bus Inputs or 3-State Outputs Ground Power
A3 B3
A4
B4
Truth Table(1)
Inputs GBA L H H L
1.
A5
B5
GAB L H L H
Outputs B Data to A Bus A Data to B Bus Z B Data to A Bus A Data to B Bus
A6
B6
A7
B7
H = High Voltage Level L = Low Voltage Level Z = High Impedance (OFF) State
PS2021B 06/20/01
1
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PI74FCT623T Octal Bus Transceiver (3-State)
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 VIH VIL IIH IIL IOZH IOZL VIK IOS IOFF VH Output HIGH Voltage 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 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 = 64 mA 2.0 0.8 1 -1 1 -1 -1.2 Min. 2.4 Typ(2) 3.0 0.3 0.55 Max. Units V V V V A A A A V mA A m V
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.
2
PS2021B
06/20/01
Switching Characteristics over Operating Range
623T Com.
(1)
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PI74FCT623T Octal Bus Transceiver (3-State)
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) Total Power Supply Current(6) VCC = Max. VCC = Max., VCC = Max., Outputs Open GBA = GAB = GND, One Input Toggling, 50% Duty Cycle VCC = Max., Outputs Open fCP = 10 MHZ, 50% Duty Cycle GBA = GAB = GND, 50% Duty Cycle One Bit toggling at fI = 5 MHZ VCC = Max., Outputs Open fCP = 10 MHZ, 50% Duty Cycle GBA = GAB = GND, 50% Duty Cycle Eight Bits toggling at fI = 2.5 MHZ 50% Duty Cycle Test Conditions(1) VIN = GND or Vcc VIN = 3.4V(3) VIN = VCC VIN = GND VIN = VCC VIN = GND VIN = 3.4V VIN = GND VIN = VCC VIN = GND VIN = 3.4V VIN = GND Min. Typ(2) 0.1 0.5 0.15 Max. 500 2.0 0.25 Units A mA mA/ MHz mA
IC
1.5 1.8 3.0
3.5(5) 4.5(5) 6.0(5)
5.0
14.0(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.
623AT Com. Max Min Max
623CT Com. Min Max Units
Parameters tPLH tPHL tPLH tPHL tPZH tPZL tPZH tPZL tPZH tPZL tPZH
Description Propagation Delay AN to BN Propagation Delay BN to AN Output Enable Time GBA to AN Output Disable Time(3) GBA to AN Output Enable Time GAB to BN Output Disable Time(3)
Conditions CL = 50 pF RL = 500
Min
1.5 1.5 1.5 1.5 1.5 1.5
7.5 7.5 9.0 8.0 9.0 8.0
1.5 1.5 1.5 1.5 1.5 1.5
5.5 5.5 7.0 6.5 7.0 6.5
1.5 1.5 1.5 1.5 1.5 1.5
4.8 4.8 6.1 5.6 6.1 5.6
ns ns ns ns ns ns
tPZL GAB to BN 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. 3
PS2021B 06/20/01

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