IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS Integrated Device Technology, Inc. FEATURES: DESCRIPTION: • 0.5 MICRON CMOS Technology • ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) • 25 mil Center SSOP and QSOP Packages • Extended commercial range of -40°C to +85°C • VCC = 3.3V ±0.3V, Normal Range or VCC = 2.7V to 3.6V, Extended Range • CMOS power levels (0.4µW typ. static) • Rail-to-Rail output swing for increased noise margin • Military product compliant to MIL-STD-883, Class B The FCT3245/A octal transceivers are built using advanced dual metal CMOS technology. These high-speed, low-power transceivers are ideal for synchronous communication between two busses (A and B). The direction control pin (DIR) controls the direction of data flow. The output enable pin (OE) overrides the direction control and disables both ports. All inputs are designed with hysteresis for improved noise margin. The FCT3245/A have series current limiting resistors. These offer low ground bounce, minimal undershoot, and controlled output fall times-reducing the need for external series terminating resistors. FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATIONS DIR A1 A2 DIR OE A1 B1 B2 3 18 4 A5 6 7 A8 GND A3 20 19 A3 A4 A6 A7 A2 1 2 P20-1 D20-1 SO20-2 SO20-7 SO20-8 & E20-1 5 8 Vcc OE B1 B2 B3 17 16 B4 15 14 B5 B6 13 9 10 B7 12 11 B8 B3 DIP/SOIC/SSOP/QSOP/CERPACK TOP VIEW A4 B4 DIR A1 A2 INDEX A6 OE B5 VCC A5 2650 drw 02 B6 A7 3 2 B7 A3 A8 B8 2650 drw 01 1 4 20 19 18 B1 17 B2 16 B3 A4 5 A5 6 A6 7 15 B4 8 14 B5 A7 L20-2 MILITARY AND COMMERCIAL TEMPERATURE RANGES 8.12 B6 B7 B8 LCC TOP VIEW The IDT logo is a registered trademark of Integrated Device Technology, Inc. 1996 Integrated Device Technology, Inc. GND A8 9 10 11 12 13 2650 drw 03 FEBRUARY 1996 DSC-2650/5 1 IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES FUNCTION TABLE(1) PIN DESCRIPTION Pin Names OE Inputs Description Output Enable Input (Active LOW) OE DIR Outputs DIR Direction Control Input L L Bus B Data to Bus A Ax Side A Inputs or 3-State Outputs L H Bus A Data to Bus B Bx Side B Inputs or 3-State Outputs H X High Z State 2650 tbl 01 ABSOLUTE MAXIMUM RATINGS(1) Unit V I OUT mA –60 to +60 –60 to +60 2650 tbl 02 CAPACITANCE (TA = +25°C, f = 1.0MHz) Symbol Rating Commercial Military VTERM(2) Terminal Voltage –0.5 to +4.6 –0.5 to +4.6 with Respect to GND VTERM(3) Terminal Voltage –0.5 to +7.0 –0.5 to +7.0 with Respect to GND –0.5 to VTERM(4) Terminal Voltage –0.5 to with Respect to VCC + 0.5 VCC + 0.5 GND TA Operating –40 to +85 –55 to +125 Temperature TBIAS Temperature –55 to +125 –65 to +135 Under Bias TSTG Storage –55 to +125 –65 to +150 Temperature PT Power Dissipation 1.0 1.0 DC Output Current NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care Z = High Impedance Symbol Parameter(1) CIN Input Capacitance CI/O I/O Capacitance V Conditions VIN = 0V Typ. 3.5 VOUT = 0V 4.0 Max. Unit 6.0 pF 8.0 NOTE: 1. This parameter is measured at characterization but not tested. V pF 2650 lnk 04 °C °C °C W 2650 lnk 03 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. 2. Vcc terminals. 3. Input terminals. 4. Output and I/O terminals. 8.12 2 IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Commercial: TA = –40°C to +85°C, VCC = 2.7V to 3.6V; Military: TA = –55°C to +125°C, VCC = 2.7V to 3.6V Symbol VIH Parameter Input HIGH Level (Input pins) Test Conditions(1) Guaranteed Logic HIGH Level Min. 2.0 Typ.(2) — Max. 5.5 Guaranteed Logic LOW Level 2.0 — VCC+0.5 –0.5 — 0.8 V VI = 5.5V — — ±1 µA VI = VCC — — ±1 VI = GND — — ±1 VI = GND — — ±1 VO = V CC — — ±1 VO = GND — — ±1 Input HIGH Level (I/O pins) VIL Input LOW Level Unit V (Input and I/O pins) II H Input HIGH Current (Input pins)(6) VCC = Max. Input HIGH Current (I/O pins)(6) II L Input LOW Current (Input pins)(6) Input LOW Current (I/O pins)(6) I OZH High Impedance Output Current VCC = Max. pins) (6) µA I OZL (3-State Output VIK Clamp Diode Voltage VCC = Min., IIN = –18mA — –0.7 –1.2 V I ODH Output HIGH Current VCC = 3.3V, V IN = V IH or VIL, VO = 1.5V(3) –36 –60 –110 mA I ODL Output LOW Current VCC = 3.3V, V IN = V IH or VIL, VO = 1.5V(3) 50 90 200 mA VOH Output HIGH Voltage VCC– 0.2 — — V 2.4 3.0 — 2.4 (5) 3.0 — — — 0.2 VOL Output LOW Voltage I OS Short Circuit Current(4) VH Input Hysteresis I CCL I CCH I CCZ Quiescent Power Supply Current VCC = Min. I OH = –0.1mA VIN = VIH or V IL I OH = –3mA VCC = 3.0V VIN = VIH or V IL VCC = Min. I OH = –6mA MIL. I OH = –8mA COM'L. I OL = 0.1mA VIN = VIH or V IL I OL = 16mA — 0.2 0.4 I OL = 24mA — 0.3 0.55 VCC = 3.0V I OL = 24mA VIN = VIH or V IL VCC = Max., VO = GND(3) — 0.3 0.50 –60 –135 –240 mA — 150 — mV COM'L. — 0.1 10 µA MIL. — 0.1 100 — VCC = Max., VIN = GND or VCC 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 = 3.3V, +25°C ambient. 3. Not more than one output should be tested 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. 6. The test limits for this parameter is ± 5µA at TA = –55°C. 8.12 V 2650 lnk 05 3 IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES POWER SUPPLY CHARACTERISTICS Symbol ∆ICC Parameter Quiescent Power Supply Current Test Conditions(1) VIN = VCC – 0.6V(3) VCC = Max. Min. — Typ.(2) 2.0 Max. 30 Unit µA ICCD Dynamic Power Supply Current(4) VCC = Max. Outputs Open OE = DIR = GND One Input Toggling 50% Duty Cycle VIN = VCC VIN = GND — 60 85 µA/ MHz IC Total Power Supply Current (6) VCC = Max. VIN = VCC — 0.6 0.9 mA Outputs Open VIN = GND — 0.6 0.9 VIN = VCC VIN = GND — 1.2 1.7 (5) VIN = VCC –0.6V VIN = GND — 1.2 1.8 (5) fi =10MHz 50% Duty Cycle VIN = VCC –0.6V OE = DIR = GND VIN = GND One Bit Toggling VCC = Max. Outputs Open fi = 2.5MHz 50% Duty Cycle OE = DIR = GND Eight Bits Toggling 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 = 3.3V, +25°C 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 = IQUIESCENT + IINPUTS + IDYNAMIC IC = ICC + ∆ICC DHNT + ICCD (fCPNCP/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 2650 tbl 06 SWITCHING CHARACTERISTICS OVER OPERATING RANGE(3) FCT3245 Com'l. Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tPZH tPZL tPHZ tPLZ Parameter Propagation Delay A to B, B to A Output Enable Time OE to A or B Output Disable Time OE to A or B Output Enable Time DIR to A or B(4) Output Disable Time DIR to A or B(4) Condition(1) Min.(2) CL = 50pF RL = 500Ω 1.5 FCT3245A Mil. Max. Min.(2) 7.0 1.5 1.5 9.5 1.5 Com'l. Max. Min.(2) 7.5 1.5 1.5 10.0 7.5 1.5 1.5 9.5 1.5 7.5 Mil. Max. Min.(2) Max. Unit 4.6 1.5 4.9 ns 1.5 6.2 1.5 6.5 ns 10.0 1.5 5.0 1.5 6.0 ns 1.5 10.0 1.5 6.2 1.5 6.5 ns 1.5 10.0 1.5 5.0 1.5 6.0 ns 2650 tbl 07 NOTES: 1. See test circuit and waveforms. 2. Minimum limits are guaranteed but not tested on Propagation Delays. 3. Propagation Delays and Enable/Disable times are with VCC = 3.3V ±0.3V, Normal Range. For VCC = 2.7V to 3.6V, Extended Range, all Propagation Delays and Enable/Disable times should be degraded by 20%. 4. This parameter is guaranteed but not tested. 8.12 4 IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES TEST CIRCUITS AND WAVEFORMS SWITCH POSITION TEST CIRCUITS FOR ALL OUTPUTS 6V ← V CC 500Ω V V IN Pulse Generator Test Open Drain Disable Low Enable Low Disable High Enable High All Other tests Open GND OUT D.U.T. 50pF R T C 500Ω Switch 6V GND Open 2650 lnk 08 DEFINITIONS: CL= Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. L 2650 drw 04 SET-UP, HOLD AND RELEASE TIMES DATA INPUT TIMING INPUT ASYNCHRONOUS CONTROL PRESET CLEAR ETC. SYNCHRONOUS CONTROL PRESET CLEAR CLOCK ENABLE ETC. tH tSU tREM tSU PULSE WIDTH 3V 1.5V 0V 3V 1.5V 0V LOW-HIGH-LOW PULSE 1.5V tW 3V 1.5V 0V HIGH-LOW-HIGH PULSE 1.5V 3V 1.5V 0V tH 2650 drw 06 2650 drw 05 PROPAGATION DELAY ENABLE AND DISABLE TIMES ENABLE SAME PHASE INPUT TRANSITION tPLH tPHL OUTPUT tPLH OPPOSITE PHASE INPUT TRANSITION tPHL 3V 1.5V 0V VOH 1.5V VOL DISABLE 3V 1.5V 0V CONTROL INPUT tPZL OUTPUT NORMALLY SWITCH 6V LOW tPZH 3V 1.5V 0V OUTPUT NORMALLY HIGH 2650 drw 07 SWITCH GND tPLZ 3V 1.5V 3V 0.3V VOL tPHZ 0.3V 1.5V 0V VOH 0V 2650 drw 08 NOTES: 1. Diagram shown for input Control Enable-LOW and input Control DisableHIGH. 2. Pulse Generator for All Pulses: Rate ≤ 1.0MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. 3. If VCC is below 3V, input voltage swings should be adjusted not to exceed VCC. 8.12 5 IDT54/74FCT3245/A 3.3V CMOS OCTAL BIDIRECTIONAL TRANSCEIVERS MILITARY AND COMMERCIAL TEMPERATURE RANGES ORDERING INFORMATION IDT X XX FCT Temp. Range Family XX Device Type X Package X Process Blank B Commercial MIL-STD-883, Class B P D SO PY Q Plastic DIP (P20-1) CERDIP (D20-1) Small Outline IC (SO20-2) Shrink Small Outline Package (SO20-7) Quarter-size Small Outline Package (SO20-8) 245 245A Non-Inverting Octal Bidirectional Transceiver 3 3.3Volt 54 74 –55°C to +125°C –40°C to +85°C 2650 drw 09 8.12 6