IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS AND 5 VOLT TOLERANT I/O FEATURES: IDT74LVC2245A DESCRIPTION: • 0.5 MICRON CMOS Technology • ESD > 2000V per MIL-STD-883, Method 3015; > 200V using machine model (C = 200pF, R = 0) • VCC = 3.3V ± 0.3V, Normal Range • VCC = 2.7V to 3.6V, Extended Range µ W typ. static) • CMOS power levels (0.4µ • Rail-to-rail output swing for increased noise margin • All inputs, outputs, and I/O are 5V tolerant • Available in SOIC, SSOP, QSOP, and TSSOP packages This bus transceiver is built using advanced dual metal CMOS technology. The LVC2245A device is designed for asynchronous communication between data buses. The device transmits data from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the directioncontrol (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. Inputs can be driven from either 3.3V or 5V devices. This feature allows the use of this device as a translator in a mixed 3.3V/5V environment. The LVC2245A has series resistors in the device output structure of the "B" port which will significantly reduce line noise when used with light loads. The driver has been designed to drive ±12mA at the designated threshold levels. DRIVE FEATURES: • Balanced Output Drivers: ±12mA (B Port) • High Output Drivers: ±24mA (A Port) APPLICATIONS: • 5V and 3.3V mixed voltage systems • Data communication and telecommunication systems FUNCTIONAL BLOCK DIAGRAM DIR 1 19 A1 OE 2 18 B1 TO SEVEN OTHER CHANNELS The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE FEBRUARY 2000 1 © 2000 Integrated Device Technology, Inc. DSC-4607/1 IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol Description Max Unit VTERM Terminal Voltage with Respect to GND –0.5 to +6.5 V TSTG Storage Temperature –65 to +150 °C –50 to +50 mA DIR 1 20 VCC IOUT DC Output Current A1 2 19 OE IIK IOK Continuous Clamp Current, VI < 0 or VO < 0 –50 mA A2 3 18 B1 ICC ISS Continuous Current through each VCC or GND ±100 mA A3 4 17 B2 A4 5 16 B3 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 10 11 B8 GND NOTE: 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. CAPACITANCE (TA = +25°C, F = 1.0MHz) Parameter(1) Symbol Conditions Typ. Input Capacitance VIN = 0V 4.5 6 pF COUT Output Capacitance VOUT = 0V 5.5 8 pF CI/O I/O Port Capacitance VIN = 0V 6.5 8 pF PIN DESCRIPTION Pin Names Description Output Enable Input (Active LOW) OE DIR Direction Control Output Ax Side A Inputs or 3-State Outputs Bx Side B Inputs or 3-State Outputs FUNCTION TABLE(1) Inputs OE DIR L L B Data to A Bus L H A Data to B Bus H X Isolation NOTE: 1. H = HIGH Voltage Level X = Don’t Care L = LOW Voltage Level 2 Unit CIN NOTE: 1. As applicable to the device type. SOIC/ SSOP/ QSOP/ TSSOP TOP VIEW Max. Outputs IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = –40°C to +85°C Symbol VIH VIL Min. Typ.(1) Max. Unit VCC = 2.3V to 2.7V 1.7 — — V VCC = 2.7V to 3.6V 2 — — VCC = 2.3V to 2.7V — — 0.7 VCC = 2.7V to 3.6V — — 0.8 Parameter Input HIGH Voltage Level Input LOW Voltage Level Test Conditions V Input Leakage Current VCC = 3.6V VI = 0 to 5.5V — — ±5 µA IOZH High Impedance Output Current VCC = 3.6V VO = 0 to 5.5V — — ±10 µA IOZL (3-State Output pins) IOFF Input/Output Power Off Leakage VCC = 0V, VIN or VO ≤ 5.5V — — ±50 µA VIK Clamp Diode Voltage VCC = 2.3V, IIN = –18mA — –0.7 –1.2 V VH ICCL ICCH ICCZ ∆ICC Input Hysteresis Quiescent Power Supply Current VCC = 3.3V VCC = 3.6V VIN = GND or VCC — — 100 — — 10 mV µA 3.6 ≤ VIN ≤ 5.5V(2) One input at VCC - 0.6V, other inputs at VCC or GND — — — — 10 500 µA IIH IIL Quiescent Power Supply Current Variation NOTES: 1. Typical values are at VCC = 3.3V, +25°C ambient. 2. This applies in the disabled state only. OUTPUT DRIVE CHARACTERISTICS (A PORT) Symbol VOH Test Conditions(1) Parameter Output HIGH Voltage Min. Max. Unit VCC – 0.2 — V IOH = – 6mA 2 — IOH = – 12mA 1.7 — 2.2 — VCC = 2.3V to 3.6V IOH = – 0.1mA VCC = 2.3V VCC = 2.3V VCC = 2.7V VCC = 3V VOL Output LOW Voltage 2.4 — VCC = 3V IOH = – 24mA 2 — VCC = 2.3V to 3.6V IOL = 0.1mA — 0.2 VCC = 2.3V IOL = 6mA — 0.4 IOL = 12mA — 0.7 VCC = 2.7V IOL = 12mA — 0.4 VCC = 3V IOL = 24mA — 0.55 V NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = – 40°C to + 85°C. 3 IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE OUTPUT DRIVE CHARACTERISTICS (B PORT) Symbol VOH Test Conditions(1) Parameter Output HIGH Voltage Unit V IOH = – 0.1mA VCC – 0.2 — VCC = 2.3V IOH = – 4mA 1.9 — IOH = – 6mA 1.7 — VCC = 3V Output LOW Voltage Max. VCC = 2.3V to 3.6V VCC = 2.7V VOL Min. VCC = 2.3V to 3.6V VCC = 2.3V VCC = 2.7V VCC = 3V IOH = – 4mA 2.2 — IOH = – 8mA 2 — IOH = – 6mA 2.4 — IOH = – 12mA 2 — IOL = 0.1mA — 0.2 IOL = 4mA — 0.4 IOL = 6mA — 0.55 IOL = 4mA — 0.4 IOL = 8mA — 0.6 IOL = 6mA — 0.55 IOL = 12mA — 0.8 V NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = – 40°C to + 85°C. OPERATING CHARACTERISTICS, VCC = 3.3V ± 0.3V, TA = 25°C Symbol Parameter CPD Power Dissipation Capacitance per Transceiver Outputs enabled CPD Power Dissipation Capacitance per Transceiver Outputs disabled Test Conditions Typical Unit CL = 0pF, f = 10Mhz 48 pF 4 SWITCHING CHARACTERISTICS (A PORT)(1) Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay Bx to Ax Output Enable Time OE to Ax Output Disable Time OE to Ax Output Skew(2) Min. — NOTES: 1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C. 2. Skew between any two outputs of the same package and switching in the same direction. 4 VCC = 2.7V Max. 7.3 VCC = 3.3V ± 0.3V Min. Max. 1.5 6.3 Unit ns — 9.5 1.5 8.5 ns — 8.5 1.7 7.5 ns — — — 500 ps IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE SWITCHING CHARACTERISTICS (B PORT)(1) Symbol tPLH tPHL tPZH tPZL tPHZ tPLZ tSK(o) Parameter Propagation Delay Ax to Bx Output Enable Time OE to Bx Output Disable Time OE to Bx Min. — Output Skew(2) NOTES: 1. See TEST CIRCUITS AND WAVEFORMS. TA = – 40°C to + 85°C. 2. Skew between any two outputs of the same package and switching in the same direction. 5 VCC = 2.7V Max. 8.1 VCC = 3.3V ± 0.3V Min. Max. 1.5 7.1 Unit ns — 10 1.5 9 ns — 9.2 1.7 8.2 ns — — — 500 ps IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE TEST CIRCUITS AND WAVEFORMS TEST CONDITIONS Symbol VCC(1)= 3.3V±0.3V VCC(1)= 2.7V VCC(2)= 2.5V±0.2V Unit VLOAD 6 6 2 x Vcc V VIH 2.7 2.7 Vcc V VT 1.5 1.5 Vcc / 2 V VLZ 300 300 150 mV VHZ 300 300 150 mV CL 50 50 30 pF VIN Pulse (1, 2) Generator GND tPZL OUTPUT SWITCH NORMALLY VLOAD LOW tPZH OUTPUT SWITCH NORMALLY GND HIGH 500Ω LVC Link Switch DATA INPUT VLOAD TIMING INPUT Disable High Enable High GND ASYNCHRONOUS CONTROL All Other Tests Open SYNCHRONOUS CONTROL VIH VT 0V tPHL1 tSK (x) tSK (x) VOH VOH-VHZ 0V VT 0V tSU VIH VT 0V VIH VT 0V VIH VT 0V VIH VT 0V tH tREM tSU tH Set-up, Hold, and Release Times VOH VT VOL LOW-HIGH-LOW PULSE VT tW HIGH-LOW-HIGH PULSE tPHL2 VT Pulse Width tSK(x) = tPLH2 - tPLH1 or tPHL2 - tPHL1 Output Skew - tSK(X) tPHZ LVC Link VOH VT VOL OUTPUT 2 VLOAD/2 VOL+VLZ VOL Enable and Disable Times SWITCH POSITION Open Drain Disable Low Enable Low tPLZ VLOAD/2 VT NOTE: 1. Diagram shown for input Control Enable-LOW and input Control Disable-HIGH. NOTES: 1. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2.5ns; tR ≤ 2.5ns. 2. Pulse Generator for All Pulses: Rate ≤ 10MHz; tF ≤ 2ns; tR ≤ 2ns. Test VIH VT 0V LVC Link DEFINITIONS: CL = Load capacitance: includes jig and probe capacitance. RT = Termination resistance: should be equal to ZOUT of the Pulse Generator. tPLH2 DISABLE ENABLE Test Circuit for All Outputs OUTPUT 1 VIH VT 0V CONTROL INPUT CL tPLH1 tPHL Propagation Delay D.U.T. INPUT tPLH LVC Link VOUT RT tPHL OPPOSITE PHASE INPUT TRANSITION Open 500Ω tPLH OUTPUT VLOAD VCC VIH VT 0V VOH VT VOL SAME PHASE INPUT TRANSITION LVC Link NOTES: 1. For tSK(o) OUTPUT1 and OUTPUT2 are any two outputs. 2. For tSK(b) OUTPUT1 and OUTPUT2 are in the same bank. 6 LVC Link IDT74LVC2245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION X LVC IDT XX XXXX XX Temp. Range Bus-Hold Device Type Package SO PY Q PG Small Outline IC (gull wing) Shrink Small Outline Package Quarter Size Small Outline Package Thin Shrink Small Outline Package 2245A Octal Bus Transceiver with 3-State Outputs, ±12mA (B port) ±24mA (A port) Blank No Bus-hold 74 –40°C to +85°C CORPORATE HEADQUARTERS 2975 Stender Way Santa Clara, CA 95054 for SALES: 800-345-7015 or 408-727-6116 fax: 408-492-8674 www.idt.com 7 for Tech Support: [email protected] (408) 654-6459