74LVQ245QSC

74LVQ245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Outputs February 1992 Revised June 2001 74LVQ245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Outputs General Description The LVQ245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 12 mA at both the A and B ports. 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; Receive (active-LOW) enables data from B ports to A ports. The Output Enable input, when HIGH, disables both A and B ports by placing them in a HIGH Z condition. Features s Ideal for low power/low noise 3.3V applications s Implements patented EMI reduction circuitry s Available in SOIC JEDEC, SOIC EIAJ and QSOP packages s Guaranteed simultaneous switching noise level and dynamic threshold performance s Improved latch-up immunity s Guaranteed incident wave switching into 75Ω s 4 kV minimum ESD immunity Ordering Code Order Number 74LVQ245SC 74LVQ245SJ 74LVQ245QSC Package Number M20B M20D MQA20 Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Pin Descriptions Pin Names Description Output Enable Inputs Transmit/Receive Input Side A Inputs or 3-STATE Outputs B0–B7 Side B Inputs or 3-STATE Outputs Truth Table Inputs Outputs OE L L H H = HIGH Voltage Level OE T/R T/R L H X Bus B Data to Bus A Bus A Data to Bus B HIGH-Z State X = Immaterial A0–A7 L = LOW Voltage Level © 2001 Fairchild Semiconductor Corporation DS011357 www.fairchildsemi.com 74LVQ245 Absolute Maximum Ratings(Note 1) Supply Voltage (VCC) DC Input Diode Current (IIK) VI = −0.5V VI = VCC + 0.5V DC Input Voltage (VI) DC Output Diode Current (IOK) VO = −0.5V VO = VCC + 0.5V DC Output Voltage (VO) DC Output Source or Sink Current (IO) DC VCC or Ground Current (ICC or IGND) Storage Temperature (TSTG) DC Latch-Up Source or Sink Current −0.5V to +7.0V −20 mA +20 mA −0.5V to VCC + 0.5V −20 mA +20 mA −0.5V to VCC + 0.5V ±50 mA ±400 mA −65°C to +150°C ±300 mA Recommended Operating Conditions (Note 2) Supply Voltage (VCC) Input Voltage (VI) Output Voltage (VO) Operating Temperature (TA) Minimum Input Edge Rate (∆V/∆t) VIN from 0.8V to 2.0V VCC @ 3.0V 125 mV/ns 2.0V to 3.6V 0V to VCC 0V to VCC −40°C to +85°C Note 1: The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the conditions for actual device operation. Note 2: Unused inputs must be held HIGH or LOW. They may not float. DC Electrical Characteristics Symbol VIH VIL VOH Parameter Minimum High Level Input Voltage Maximum Low Level Input Voltage Minimum High Level Output Voltage VOL Maximum Low Level Output Voltage IIN IOLD IOHD ICC Maximum Input Leakage Current Minimum Dynamic Output Current (Note 4) Maximum Quiescent Supply Current IOZT Maximum I/O Leakage Current VOLP VOLV VIHD VILD Quiet Output Maximum Dynamic VOL Quiet Output Minimum Dynamic VOL Maximum High Level Dynamic Input Voltage Maximum Low Level Dynamic Input Voltage 3.6 ±0.3 ±3.0 µA VCC (V) 3.0 3.0 3.0 3.0 3.0 3.0 3.6 3.6 3.6 3.6 4.0 0.002 TA = +25°C Typ 1.5 1.5 2.99 2.0 0.8 2.9 2.58 0.1 0.36 ±0.1 TA = −40°C to +85°C Guaranteed Limits 2.0 0.8 2.9 2.48 0.1 0.44 ±1.0 36 −25 40.0 V V V V V V µA mA mA µA VOUT = 0.1V or VCC − 0.1V VOUT = 0.1V or VCC − 0.1V IOUT = −50 µA VIN = VIL or VIH (Note 3) IOH = −12 mA IOUT = 50 µA VIN = VIL or VIH (Note 3) IOL = +12 mA VI = VCC, GND VOLD = 0.8V Max (Note 5) VOHD = 2.0V Min (Note 5) VIN = VCC or GND VI (OE) = V IL, VIH VI = VCC, GND VO = VCC, GND 3.3 3.3 3.3 3.3 0.5 −0.5 1.6 1.7 0.8 −0.8 2.0 0.8 V V V V (Note 6)(Note 7) (Note 6)(Note 7) (Note 6)(Note 8) (Note 6)(Note 8) Units Conditions Note 3: All outputs loaded; thresholds on input associated with output under test. Note 4: Maximum test duration 2.0 ms, one output loaded at a time. Note 5: Incident wave switching on transmission lines with impedances as low as 75Ω for commercial temperature range is guaranteed for 74LVQ. Note 6: Worst case package. Note 7: Max number of outputs defined as (n). Data inputs are driven 0V to 3.3V; one output at GND. Note 8: Max number of Data Inputs (n) switching. (n − 1) inputs switching 0V to 3.3V. Input-under-test switching: 3.3V to threshold (VILD), 0V to threshold (VIHD), f = 1 M Hz. www.fairchildsemi.com 2 74LVQ245 AC Electrical Characteristics TA = +25°C Symbol Parameter VCC (V) tPHL tPLH tPZL tPZH tPHZ tPLZ tOSHL tOSLH Output to Output Skew (Note 9) Output Disable Time Output Enable Time Propagation Delay 2.7 3.3 ± 0.3 2.7 3.3 ± 0.3 2.7 3.3 ± 0.3 2.7 3.3 ± 0.3 Min 2.0 2.0 3.0 3.0 1.0 1.0 CL = 50 pF Typ 9.0 7.5 10.2 8.5 10.2 8.5 1.0 1.0 Max 14.0 10.0 18.3 13.0 20.4 14.5 1.5 1.5 TA = −40°C to +85°C CL = 50 pF Min 2.0 2.0 3.0 3.0 1.0 1.0 Max 15.0 10.5 19.0 13.5 21.0 15.0 1.5 1.5 ns ns ns ns Units Note 9: Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same device. The specification applies to any outputs switching in the same direction, either HIGH-to-LOW (tOSHL) or LOW-to-HIGH (tOSLH). Parameter guaranteed by design. Capacitance Symbol CIN CI/O CPD (Note 10) Parameter Input Capacitance Input/Output Capacitance Power Dissipation Capacitance Typ 4.5 15 67 Units pF pF pF VCC = Open VCC = 3.3V VCC = 3.3V Conditions Note 10: CPD is measured at 10 MHz. 3 www.fairchildsemi.com 74LVQ245 Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide Package Number M20B www.fairchildsemi.com 4 74LVQ245 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com 74LVQ245 Low Voltage Octal Bidirectional Transceiver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Quarter Size Outline Package (QSOP), JEDEC MO-137, 0.150" Wide Package Number MQA20 Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. 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