54F253DMQB IDT | Alldatasheet
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FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES JUNE 2001 2001 Integrated Device Technology, Inc. DSC-5421/-c IDT54/74FCT245/A/C MILITARY AND COMMERCIAL TEMPERATURE RANGES FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER DESCRIPTION: The IDT octal bidirectional transceivers are built using an advanced dual metal CMOS technology. The FCT245 is designed for asynchronous two- way communication between data buses. The transmit/receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active high) enables data from A ports to B ports, and receive (active low) from B ports to A ports. The output enable (OE) input, when high, disables both A and B ports by placing them in High-Z condition. The FCT245 transceivers have non-inverting outputs. T/R A 0 A 1 A 2 A 3 A 4 A 5 A 6 A 7 B 7 B 6 B 5 B 4 B 3 B 2 B 1 B 0 OE FEATURES: − IDT54/74FCT245 equivalent to FAST™ speed − IDT54/74FCT245A 25% faster than FAST − IDT54/74FCT245C 40% faster than FAST − TTL input and output level compatible − CMOS output level compatible − IOL = 64mA (commercial) and 48mA (military) − Input current levels only 5µA max. − CMOS power levels (2.5mW typ. static) − Direction control and over-riding 3-state control − Military product compliant to MIL-STD-883, Class B and DESC listed − Meets or exceeds JEDEC Standard 18 specifications − Available in the following packages:
- Commercial: SOIC
- Military: CERDIP, LCC, CERPACK FUNCTIONAL BLOCK DIAGRAM
MILITARY AND COMMERCIAL TEMPERATURE RANGES IDT54/74FCT245/A/C FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER 10 11 12 13 1920 L20-2 B 2 B 0 B 1 B 3 B 4 T/RA A V CC A GND B B B INDEX A 2 A 3 A 6 A 4 A 5 OE D20-1 SO20-2 E20-1 A 2 A 0 A 1 V CC A 3 A 6 A 4 A 5 A 7 GND OE B 2 B 0 B 1 B 3 B 6 B 4 B 5 B 7 T/R CAPACITANCE (TA = +25OC, f = 1.0MHz) Symbol Parameter (1) Conditions Typ. Max. Unit CIN Input Capacitance V IN = 0V 6 10 pF CI/O I/O Capacitance V OUT = 0V 8 12 pF NOTE: 1. This parameter is measured at characterization but not tested. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating Commercial Military Unit VTERM(2) Terminal Voltage with Respect to GND VTERM(3) Terminal Voltage with Respect to GND –0.5 to VCC –0.5 to VCC V TA Operating Temperature 0 to +70 –55 to +125 °C TBIAS Temperature Under Bias –55 to +125 –65 to +135 °C TSTG Storage Temperature –55 to +125 –65 to +150 °C PT Power Dissipation 0.5 0.5 W IOUT DC Output Current 120 120 mA 8-link NOTES: 1. Stresses greater than those listed under ABSOLUTE 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. No terminal voltage may exceed V CC by +.5V unless otherwise noted. 2. Input and VCC terminals only. 3. Outputs and I/O terminals only. DIP/ SOIC/ CERPACK TOP VIEW LCC TOP VIEW PIN CONFIGURATION PIN DESCRIPTION Pin Names Description OE Output Enable Input (Active LOW) T/R Transmit/Receive Input A0-A7 Side A Inputs or 3-State Outputs B0-B7 Side B Inputs or 3-State Outputs FUNCTION TABLE (1) Inputs OE T/R Outputs L L Bus B Data to Bus A L H Bus A Data to Bus B H X High Z State NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: VLC = 0.2V; VHC = VCC - 0.2V Commercial: TA = 0°C to +70°C, V CC = 5.0V ± 5%; Military: TA = –55°C to +125°C, V CC = 5.0V ± 10% Symbol Parameter Test Conditions (1) Min. Typ. (2) Max. Unit VIH Input HIGH Level Guaranteed Logic HIGH Level 2 — — V VIL Input LOW Level Guaranteed Logic LOW Level — — 0.8 V II H Input HIGH Current V CC = Max. V I = VCC —— 5µ A (Except I/O pins) V I = 2.7V — — 5 (4) II L Input LOW Current V I = 0.5V — — –5 (4) (Except I/O pins) V I = GND — — –5 II H Input HIGH Current V CC = Max. V I = VCC ——1 5 µ A (I/O pins only) V I = 2.7V — — 15 (4) II L Input LOW Current V I = 0.5V — — –15 (4) (I/O pins only) V I = GND — — –15 VIK Clamp Diode Voltage V CC = Min., IN = –18mA — –0.7 –1.2 V IOS Short Circuit Current V CC = Max.(3), VO = GND –60 –120 — mA VOH Output HIGH Voltage V CC = 3V, VIN = VLC or VHC, IOH = –32µ A V HC VCC —V VCC = Min. I OH = –300µ A V HC VCC — VIN = VIH or VIL IOH = –12mA MIL. 2.4 4.3 — IOH = –15mA COM'L. 2.4 4.3 — VOL Output LOW Voltage V CC = 3V, VIN = VLC or VHC, IOL = 300µ A — GND V LC V (Port A and Port B) V CC = Min. I OL = 300µ A — GND V LC(4) VIN = VIH or VIL IOL = 48mA MIL. — 0.3 0.55 IOL = 64mA COM'L. — 0.3 0.55 NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C ambient and maximum loading. 3. Not more than one output should be shorted at one time. Duration of the short circuit test should not exceed one second. 4. This parameter is guaranteed but not tested.
MILITARY AND COMMERCIAL TEMPERATURE RANGES IDT54/74FCT245/A/C FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER POWER SUPPLY CHARACTERISTICS VLC = 0.2V; VHC = VCC - 0.2V Symbol Parameter Test Conditions (1) Min. Typ. (2) Max. Unit ICC Quiescent Power Supply Current V CC = Max. VIN ≥ VHC; VIN ≤ VLC —0 . 5 1 . 5 m A ΔICC Quiescent Power Supply Current TTL Inputs HIGH VCC = Max. VIN = 3.4V(3) —0 . 5 2 m A ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open OE = GND T/R = GND or V CC One Input Toggling 50% Duty Cycle VIN ≥ VHC VIN ≤ VLC — 0.15 0.25 mA/MHz IC Total Power Supply Current (6) VCC = Max. Outputs Open fi = 10MHz V IN ≥ VHC VIN ≤ VLC (FCT) —2 4 m A 50% Duty Cycle T/R = OE = GND One Bit Toggling VIN = 3.4V VIN = GND —2 . 3 5 VCC = Max. Outputs Open fi = 2.5MHz V IN ≥ VHC VIN ≤ VLC (FCT) —3 . 5 6 . 5 (5) 50% Duty Cycle T/R = OE = GND Eight Bits Toggling VIN = 3.4V VIN = GND — 5.5 14.5 (5) NOTES: 1. For conditions shown as Max. or Min., use appropriate value specified under Electrical Characteristics for the applicable device type. 2. Typical values are at VCC = 5.0V, +25°C 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 I CC formula. These limits are guaranteed but not tested. 6. IC = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ΔICC DH N T + ICCD (fCP /2 + fiN i) ICC = Quiescent Current ΔICC = Power Supply Current for a TTL High Input (VIN = 3.4V) D H = Duty Cycle for TTL Inputs High N T = 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 N i = Number of Inputs at fi All currents are in milliamps and all frequencies are in megahertz.
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES tPHL A to B, B to A R L = 500Ω tPZL OE to A or B tPLZ OE to A or B tPZL T/R to A or B(3) tPLZ T/R to A or B(3) SWITCHING CHARACTERISTICS OVER OPERATING RANGE 54/74FCT245 54/74FCT245A 54/74FCT245C NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. This parameter is guaranteed but not tested.
MILITARY AND COMMERCIAL TEMPERATURE RANGES IDT54/74FCT245/A/C FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER Pulse Generator R T D.U.T. V CC V IN C L V OUT 50pF 500 Ω 500 Ω 7.0V 1.5V 1.5V 1.5V 1.5V DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL tSU tH tREM tSU tH HIGH-LOW-HIGH PULSE LOW-HIGH-LOW PULSE tW 1.5V 1.5V SAME PHASE INPUT TRANSITION 1.5V 1.5V V OH tPLH OUTPUT OPPOSITE PHASE INPUT TRANSITION 1.5V tPLH tPHL tPHL V OL CONTROL INPUT 1.5V 3.5V OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH SWITCH CLOSED SWITCH OPEN V OL 0.3V 0.3V tPLZtPZL tPZH tPHZ 3.5V 1.5V 1.5V ENABLE DISABLE V OH PRESET CLEAR CLOCK ENABLE ETC. Octal link Octal link Octal link Octal link Octal link TEST CIRCUITS AND WAVEFORMS PROPAGATION DELAY TEST CIRCUITS FOR ALL OUTPUTS ENABLE AND DISABLE TIMES SET-UP , HOLD, AND RELEASE TIMES PULSE WIDTH SWITCH POSITION Test Switch Open Drain Disable Low Closed Enable Low All Other Tests Open 8-link DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. NOTES: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; Zo ≤ 50Ω; tF ≤ 2.5ns; tR ≤ 2.5ns.
FAST CMOS OCTAL BIDIRECTIONAL TRANSCEIVER MILITARY AND COMMERCIAL TEMPERATURE RANGES CORPORATE HEADQUARTERS for SALES:
2975 Stender Way 800-345-7015 or 408-727-6116
Santa Clara, CA 95054 fax: 408-492-8674 www.idt.com* *To search for sales office near you, please click the sales button found on our home page or dial the 800# above and press 2. The IDT logo is a registered trademark of Integrated Device Technology, Inc.
ORDERING INFORMATION
Temp. Range XXXX Device Type XX Package X Process SO Commercial Options Small Outline IC (SO20-2) Octal Bidirectional Transceiver – 55°C to +125°C 0°C to +70°C D E L Military Options CERDIP (D20-1) CERPACK (E20-1) Leadless Chip Carrier (L20-2) Blank B Commercial MIL-STD-883, Class B FCT 245 245A 245C