IDT74LVC245AQG8

IDT74LVC245A 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 IDT74LVC245A FEATURES: 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 • Supports hot insertion • Available in SOIC, SSOP, QSOP, and TSSOP packages This octal bus transceiver is built using advanced dual metal CMOS technology. This high-speed, low power transceiver is ideal for asynchronous 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 LVC245A has been designed with a ±24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance. All pins 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 supply system. DRIVE FEATURES: • High Output Drivers: ±24mA • Reduced system switching noise APPLICATIONS: • 5V and 3.3V mixed voltage systems • Data communication and telecommunication systems FUNCTIONAL BLOCK DIAGRAM DIR 1 19 OE A1 2 18 B1 3 A2 17 B2 A3 4 16 A4 B3 5 15 B4 A5 6 14 B5 A6 7 13 B6 A7 8 12 B7 A8 9 11 B8 The IDT logo is a registered trademark of Integrated Device Technology, Inc. INDUSTRIAL TEMPERATURE RANGE OCTOBER 2008 1 © 2006 Integrated Device Technology, Inc. DSC-4496/4 IDT74LVC245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE ABSOLUTE MAXIMUM RATINGS(1) PIN CONFIGURATION Symbol Description Max VTERM Terminal Voltage with Respect to GND –0.5 to +6.5 V TSTG Storage Temperature –65 to +150 °C IOUT DC Output Current –50 to +50 mA Continuous Clamp Current, VI < 0 or VO < 0 –50 mA Continuous Current through each VCC or GND ±100 mA DIR 1 20 A1 2 19 OE IIK IOK A2 3 18 B1 ICC ISS A3 4 17 B2 A4 5 16 B3 A5 6 15 B4 A6 7 14 B5 A7 8 13 B6 A8 9 12 B7 VCC 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 GND 10 11 Unit B8 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 OE Output Enable Input (Active LOW) DIR Direction Control Input Ax Side A Inputs or 3-State Outputs Bx Side B Inputs or 3-State Outputs FUNCTION TABLE(1) Inputs OE DIR Outputs L L Bus B Data to Bus A L H Bus A Data to Bus B H X Z NOTES: 1. H = HIGH Voltage Level X = Don’t Care L = LOW Voltage Level Z = High-Impedance 2 Unit CIN NOTE: 1. As applicable to the device type. SOIC/ SSOP/ QSOP/ TSSOP TOP VIEW Max. IDT74LVC245A 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 ΔICC 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 Symbol VOH Test Conditions(1) Parameter Output HIGH Voltage Output LOW Voltage Max. Unit VCC – 0.2 — V VCC = 2.3V to 3.6V IOH = – 0.1mA VCC = 2.3V IOH = – 6mA 2 — VCC = 2.3V IOH = – 12mA 1.7 — VCC = 2.7V 2.2 — VCC = 3V 2.4 — 2.2 — VCC = 3V VOL Min. IOH = – 24mA 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 IDT74LVC245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE 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 47 pF 2 SWITCHING CHARACTERISTICS(1) VCC = 2.7V Symbol VCC = 3.3V ± 0.3V Parameter Min. Max. Min. Max. Unit tPLH Propagation Delay — 7.3 1.5 6.3 ns — 9.5 1.5 8.5 ns — 8.5 1.7 7.5 ns — — — 1 ns tPHL Ax to Bx, Bx to Ax tPZH Output Enable Time tPZL OE to Ax or Bx tPHZ Output Disable Time tPLZ OE to Ax or Bx tSK(o) 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. 4 IDT74LVC245A 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 VIH VT 0V VOH VT VOL SAME PHASE INPUT TRANSITION 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 tPLH tPHL tPLH tPHL OUTPUT VIH VT 0V OPPOSITE PHASE INPUT TRANSITION LVC Link Propagation Delay VLOAD VCC VIN Pulse (1, 2) Generator tPZL VOUT D.U.T. OUTPUT SWITCH NORMALLY VLOAD LOW tPZH OUTPUT SWITCH NORMALLY GND HIGH 500Ω RT VIH VT 0V CONTROL INPUT GND 500Ω DISABLE ENABLE Open CL LVC Link Test Circuit for All Outputs tPLZ VLOAD/2 VT VLOAD/2 VOL+VLZ VOL tPHZ VOH VOH-VHZ 0V 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. Enable and Disable Times 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. SWITCH POSITION Switch DATA INPUT VLOAD TIMING INPUT Disable High Enable High GND ASYNCHRONOUS CONTROL All Other Tests Open SYNCHRONOUS CONTROL Test Open Drain Disable Low Enable Low INPUT OUTPUT 1 tPLH1 VIH VT 0V tPHL1 tSK (x) tSK (x) tPLH2 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) tH LVC Link VOH VT VOL OUTPUT 2 tSU VIH VT 0V VIH VT 0V VIH VT 0V VIH VT 0V 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. 5 LVC Link IDT74LVC245A 3.3V CMOS OCTAL BUS TRANSCEIVER WITH 3-STATE OUTPUTS INDUSTRIAL TEMPERATURE RANGE ORDERING INFORMATION X LVC XX XX XXXX Temp. Range Bus-Hold Device Type Package CORPORATE HEADQUARTERS 6024 Silver Creek Valley Road San Jose, CA 95138 SO SOG PY PYG Q QG PG PGG Small Outline IC (gull wing) SOIC - Green Shrink Small Outline Package SSOP - Green Quarter Size Small Outline Package QSOP - Green Thin Shrink Small Outline Package TSSOP - Green 245A Octal Bus Transceiver with 3-State Outputs, ±24mA Blank No Bus-hold 74 –40°C to +85°C for SALES: 800-345-7015 or 408-284-8200 fax: 408-284-2775 www.idt.com 6 for Tech Support: logichelp@idt.com