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| 74VCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs October 1996 Revised April 1999 74VCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs General Description The VCX16245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus oriented applications. The device is byte controlled. Each byte has separate 3-STATE control inputs which can be shorted together for full 16-bit operation. The T/R inputs determine the direction of data flow through the device. The OE inputs disable both the A and B ports by placing them in a high impedance state. The 74VCX16245 is designed for low voltage (1.65 to 3.6V) VCC applications with I/O compatibility up to 3.6V. The 74VCX16245 is fabricated with an advanced CMOS technology to achieve high speed operation while maintaining low CMOS power dissipation. Features s 1.65V-3.6V VCC supply operation s 3.6V tolerant inputs and outputs s tPD 2.5 ns max for 3.0V to 3.6V VCC 3.0 ns max for 2.3V to 2.7V VCC 6.0 ns max for 1.65V to 1.95V VCC s Power-down high impedance inputs and outputs s Supports live insertion/withdrawal (Note 1) s Static Drive (IOH/IOL) 24 mA @ 3.0V VCC 18 mA @ 2.3V VCC 6 mA @ 1.65V VCC s Uses patented noise/EMI reduction circuitry s Latchup performance exceeds 300 mA s ESD performance: Human body model > 2000V Machine model >200V Note 1: To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pull-up resistor; the minimum value of the resistor is determined by the current-sourcing capability of the driver. Ordering Code: Order Number 74VCX16245MTD Package Number MTD48 Package Description 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Logic Symbol (c) 1999 Fairchild Semiconductor Corporation DS012169.prf www.fairchildsemi.com 74VCX16245 Connection Diagram Pin Descriptions Pin Names OEn T/Rn A0-A15 B0-B15 Output Enable Input (Active LOW) Transmit/Receive Input Side A Inputs or 3-STATE Outputs Side B Inputs or 3-STATE Outputs Description Truth Tables Inputs OE1 L L H Inputs OE2 L L H T/R2 L H X Bus B8-B15 Data to Bus A8-A15 Bus A8-A15 Data to Bus B8-B15 HIGH Z State on A8-A15, B8-B15 T/R1 L H X Bus B0-B7 Data to Bus A0-A7 Bus A0-A7 Data to Bus B0-B7 HIGH Z State on A0-A7, B0-B7 Outputs Outputs H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial (HIGH or LOW, inputs and I/O's may not float) Z = High Impedance Logic Diagram www.fairchildsemi.com 2 74VCX16245 Absolute Maximum Ratings(Note 2) Supply Voltage (VCC) DC Input Voltage (VI) Output Voltage (VO) Outputs 3-STATE Outputs Active (Note 3) DC Input Diode Current (IIK) VI < 0V DC Output Diode Current (IOK) VO < 0V VO > VCC DC Output Source/Sink Current (IOH/IOL) DC VCC or Ground Current per Supply Pin (ICC or Ground) Storage Temperature Range (TSTG) 100 mA -65C to +150C 50 mA -50 mA +50 mA -0.5V to +4.6V -0.5 to VCC + 0.5V -50 mA -0.5V to +4.6V -0.5V to +4.6V Recommended Operating Conditions (Note 4) Power Supply Operating Data Retention Only Input Voltage Output Voltage (VO) Output in Active States Output in 3-STATE Output Current in IOH/IOL VCC = 3.0V to 3.6V VCC = 2.3V to 2.7V VCC = 1.65V to 2.3V Free Air Operating Temperature (TA) Minimum Input Edge Rate (t/V) VIN = 0.8V to 2.0V, VCC = 3.0V 10 ns/V Note 2: 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" table are not guaranteed at the Absolute Maximum Ratings. The Recommended Operating Conditions tables will define the conditions for actual device operation. Note 3: IO Absolute Maximum Rating must be observed. Note 4: Floating or unused pin (inputs or I/O's) must be held HIGH or LOW. 1.65V to 3.6V 1.2V to 3.6V -0.3V to 3.6V 0V to VCC 0.0V to 3.6V 24 mA 18 mA 6 mA -40C to +85C DC Electrical Characteristics (2.7V < VCC 3.6V) Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = -100 A IOH = -12 mA IOH = -18 mA IOH = -24 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 12 mA IOL = 18 mA IOL = 24 mA II IOZ IOFF ICC ICC Input Leakage Current 3-STATE Output Leakage Power Off Leakage Current Quiescent Supply Current Increase in ICC per Input 0V VI 3.6V 0V VO 3.6V VI = V IH or VIL 0V (VI, VO) 3.6V VI = V CC or GND VCC (VI, VO) 3.6V (Note 5) VIH = VCC - 0.6V Note 5: Outputs disabled or 3-STATE only. Conditions VCC (V) 2.7-3.6 2.7-3.6 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7 3.0 3.0 2.7-3.6 2.7-3.6 0 2.7-3.6 2.7-3.6 2.7-3.6 Min 2.0 Max Units V 0.8 VCC - 0.2 2.2 2.4 2.2 0.2 0.4 0.4 0.55 5.0 10 10 20 20 750 V V V A A A A A 3 www.fairchildsemi.com 74VCX16245 DC Electrical Characteristics (2.3V VCC 2.7V) Symbol VIH VIL VOH Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage IOH = -100 A IOH = -6 mA IOH = -12 mA IOH = -18 mA VOL LOW Level Output Voltage IOL = 100 A IOL = 12 mA IOL = 18 mA II IOZ IOFF ICC Input Leakage Current 3-STATE Output Leakage Power Off Leakage Current Quiescent Supply Current 0 VI 3.6V 0 VO 3.6V VI = VIH or VIL 0 (VI, VO) 3.6V VI = VCC or GND VCC (VI, VO) 3.6V (Note 6) Note 6: Outputs disabled or 3-STATE only. Conditions VCC (V) 2.3-2.7 2.3-2.7 2.3-2.7 2.3 2.3 2.3 2.3-2.7 2.3 2.3 2.3-2.7 2.3-2.7 0 2.3-2.7 2.3-2.7 Min 1.6 Max Units V 0.7 VCC - 0.2 2.0 1.8 1.7 0.2 0.4 0.6 5.0 10 10 20 20 V V V A A A A DC Electrical Characteristics (1.65V VCC < 2.3V) Symbol VIH VIL VOH VOL II IOZ IOFF ICC Parameter HIGH Level Input Voltage LOW Level Input Voltage HIGH Level Output Voltage LOW Level Output Voltage Input Leakage Current 3-STATE Output Leakage Power Off Leakage Current Quiescent Supply Current IOH = -100 A IOH = -6 mA IOL = 100 A IOL = 6 mA 0 VI 3.6V 0 VO 3.6V VI = VIH or VIL 0 (VI, VO) 3.6V VI = VCC or GND VCC (VI, VO) 3.6V (Note 7) Note 7: Outputs disabled or 3-STATE only. Conditions VCC (V) 1.65-2.3 1.65-2.3 1.65-2.3 1.65 1.65-2.3 1.65 1.65-2.3 1.65-2.3 0 1.65-2.3 1.65-2.3 Min 0.65 x VCC Max Units V 0.35 x VCC VCC - 0.2 1.25 0.2 0.3 5.0 10 10 20 20 V V V A A A A www.fairchildsemi.com 4 74VCX16245 AC Electrical Characteristics Symbol Parameter (Note 8) TA = -40C to +85C, CL = 30 pF, RL = 500 VCC = 3.3V 0.3V Min Max 2.5 3.8 3.7 0.5 0.8 0.8 0.8 VCC = 2.5 0.2V Min 1.0 1.0 1.0 Max 3.0 4.9 4.2 0.5 VCC = 1.8V 0.15V Min 1.5 1.5 1.5 Max 6.0 9.3 7.6 0.75 ns ns ns ns Units tPHL, tPLH tPZL, tPZH tPLZ, tPHZ tOSHL tOSLH Prop Delay Output Enable Time Output Disable Time Output to Output Skew (Note 9) Note 8: For CL = 50pF, add approximately 300ps to the AC maximum specification. 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). Dynamic Switching Characteristics Symbol VOLP Parameter Quiet Output Dynamic Peak VOL VOLV Quiet Output Dynamic Valley VOL VOHV Quiet Output Dynamic Valley VOH CL = 30 pF, VIH = VCC, VIL = 0V CL = 30 pF, VIH = VCC, VIL = 0V Conditions CL = 30 pF, VIH = VCC, VIL = 0V VCC (V) 1.8 2.5 3.3 1.8 2.5 3.3 1.8 2.5 3.3 TA = +25C Typical 0.25 0.6 0.8 -0.25 -0.6 -0.8 1.5 1.9 2.2 V V V Units Capacitance Symbol CIN CI/O CPD Input Capacitance Output Capacitance Power Dissipation Capacitance Parameter Conditions VCC = 1.8V, 2.5V, or 3.3V, VI = 0V or VCC VI = 0V, or VCC, VCC = 1.8V, 2.5V or 3.3V VI = 0V or VCC, F = 10 MHz VCC = 1.8V, 2.5V or 3.3V TA = +25C 6 7 20 Units pF pF pF 5 www.fairchildsemi.com 74VCX16245 AC Loading and Waveforms FIGURE 1. AC Test Circuit TEST tPLH, tPHL tPZL, tPLZ tPZH, tPHZ SWITCH Open 6V at VCC = 3.3 0.3V; VCC x 2 at VCC = 2.5 0.2V; 1.8V 0.15V GND FIGURE 2. Waveform for Inverting and Non-inverting Functions FIGURE 3. 3-STATE Output High Enable and Disable Times for Low Voltage Logic FIGURE 4. 3-STATE Output Low Enable and Disable Times for Low Voltage Logic Symbol Vmi Vmo VX VY VCC 3.3V 0.3V 1.5V 1.5V VOL + 0.3V VOH - 0.3V 2.5V 0.2V VCC/2 VCC/2 VOL + 0.15V VOH - 0.15V 1.8V 0.15V VCC/2 VCC/2 VOL + 0.15V VOH - 0.15V www.fairchildsemi.com 6 74VCX16245 Low Voltage 16-Bit Bidirectional Transceiver with 3.6V Tolerant Inputs and Outputs Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 6.1mm Wide Package Number MTD48 LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the www.fairchildsemi.com user. 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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