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| 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 Memory Logic Diagram FEATURES: * RAD-PAK(R) radiation-hardened against natural space radiation * Total dose hardness: - > 100 krad (Si), depending upon space mission * Output ports have equivalent 22- series resistors, so no external resistors are required * Support mixed-mode signal operation (5V input and output voltages with 3.3V VCC) * Support unregulated battery operation down to 2.7V * Typical VOLP (Output ground bounce) < 0.8V at VCC = 3.3V, TA = 25C * IOFF and power-up 3-state support hot insertion * Bus hold on data inputs eliminates the need for external pull-up/pull-down resistors * Distributed VCC and GND pin configuration minimizes highspeed switching noise * Flow-through architecture optimizes PCB layout * Package: 48 pin RAD-PAK flat pack DESCRIPTION: Maxwell Technologies' 54LVTH162244 devices are 16-bit buffers and line drivers designed for low-voltage (3.3V) VCC operation, but with the capability to provide a TTL interface to a 5V system environment. These devices can be used as four 4-bit buffers, two 8-bit buffers, or one 16-bit buffer. These devices provide true outputs and symmetrical active-low output-enable (OE) inputs. The outputs, which are designed to source or sink up to 12 mA, include equivalent 22- series resistors to reduce overshoot and undershoot. Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level. Maxwell Technologies' patented RAD-PAK(R) packaging technology incorporates radiation shielding in the microcircuit package. It eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or space mission. In a GEO orbit, RAD-PAK provides greater than 100 krad (Si) radiation dose tolerance. This product is available with screening up to Class S. All data sheets are subject to change without notice 1000607 12.19.01 Rev 1 1 (858) 503-3300 - Fax: (858) 4503-3301 - www.maxwell.com (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 TABLE 1. PINOUT DESCRIPTION PIN 1, 48, 25, 24 2, 3, 5, 6 4, 10, 15, 21, 28, 34, 39, 45 7, 18, 31, 42 8, 9, 11, 12 13, 14, 16, 17 19, 20, 22, 23 47, 46, 44, 43 41, 40, 38, 37 36, 35, 33, 32 30, 29, 27, 26 SYMBOL 1OE-4OE 1Y1-1Y4 GND VCC 2Y1-2Y4 3Y1-3Y4 4Y1-4Y4 1A1-1A4 2A1-2A4 3A1-3A4 4A1-4A4 Output Ground Supply Voltage Output Output Output Input Input Input DESCRIPTION Output Enable Memory Input TABLE 2. 162244 ABSOLUTE MAXIMUM RATINGS 1 PARAMETER Supply Voltage Range Input Voltage Range 2 Voltage range applied to any output in the high-impedance or power-off state 2 Voltage range applied to any output in the high state 2 Current into any output in the low state Current into any output in the high state Input clamp current Output clamp current Operating Temperature Storage Temperature Range Operating Temperature Range 3 SYMBOL VCC VI VO VO IO IO IIK (VI < 0) IOK (VO < 0) TA TS TA MIN -0.5 -0.5 -0.5 -0.5 to VCC -30 ---55 -65 -55 MAX 4.6 7 7 0.5 30 --50 -50 125 150 125 UNIT V V V V mA mA mA mA C C C 1. Stresses beyond listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. 2. The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. 3. This current flows only when the output is in the high state and VO > VCC. 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 2 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs TABLE 3. DELTA LIMITS PARAMETER ICC(OP) IOZH IOZL VARIATION 54LVTH162244 10% of specified value on Table 5 10% of specified value on Table 5 10% of specified value on Table 5 TABLE 4. 162244 RECOMMENDED OPERATING CONDITIONS1 PARAMETER Supply Voltage High-level Input Voltage Low-level Input Voltage Input Voltage High-level output current Low-level output current Input Transition Rise or Fall Rate Power-up ramp rate Operating Temperature Outputs enabled SYMBOL VCC VIH VIL VI IOH IOL MIN 2.7 2 -----200 -55 MAX 3.6 -0.8 5.5 -12 12 10 -125 UNIT V V V V mA mA ns/V s/V C Memory t/v t/VCC TA 1. All unused control inputs of the device must be held at high or low to ensure proper device operation. TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS (VCC = 3.3V 10%, TA = -55 TO +125C, UNLESS OTHERWISE SPECIFIED) PARAMETER Input Clamp Voltage High-Level Output Voltage Low-Level Output Voltage Input Current SYMBOL VIK VOH VOL II VCC = 2.7 VCC = 3V VCC = 3V VCC = 0 or 3.6V VCC = 3.6V VCC = 3.6V Hold Current Output Disabled Leakage Current - High II(HOLD) VCC = 3V IOZH VCC = 3.6V, VO = 3V TEST CONDITIONS II = -18mA IOH = -12 mA IOL = 12 mA VI = 5.5V VI = VCC or GND VI = VCC VI = 0 VI = 0.8V VI = 2V Data Inputs Control inputs Data Inputs MIN -2 -----75 -75 -MAX -1.2 -0.8 10 1 1 -5 --5 A A UNIT V V V A 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 3 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 MIN ---------MAX -5 100 100 0.19 5 0.19 0.2 8 15 mA pF pF UNIT A A A mA TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS (VCC = 3.3V 10%, TA = -55 TO +125C, UNLESS OTHERWISE SPECIFIED) PARAMETER Output Disabled Leakage Current - Low Power Up Current Power Down Current Supply Current SYMBOL IOZL IOZPU2 IOZPD2 ICC TEST CONDITIONS VCC = 3.6V, VO = 0.5V VCC = 0 to 1.5V, VO = 0.5V to 3V, OE = don't care VCC = 1.5V to 0, VO = 0.5V to 3V, OE = don't care VCC = 3.6V IO = 0 VI = VCC or GND Delta Supply Current Input Capacitance Input Output Capacitance at VCC or GND Outputs high Outputs low Outputs disabled ICC 1 VCC = 3V to 3.6V, One input at VCC -0.6V, Other inputs CI 2 CO 2 VI = 3V or 0 VO = 3V or 0 1. This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND. 2. Guaranteed by design. Memory TABLE 6. 162244 AC ELECTRICAL CHARACTERISTICS (TA = -55 TO +125C, CL = 50 PF, UNLESS OTHERWISE SPECIFIED) PARAMETER SYMBOL VCC = 3.3V V MIN Propogation Delay Time A to Y Output Enable Time OE to Y Output Disable Time OE to Y Output Skew tPLH tPHL tPZH tPZL tPHZ tPLZ tsk(o) 1.1 1.1 1.1 1.3 1.6 1 -MAX 4.6 3.9 5.4 4.9 5.9 5.9 -MIN -------VCC = 2.7V MAX 5.1 4.5 6.7 6.1 6.5 5.8 -ns ns ns ns UNIT 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 4 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 TABLE 7. FUNCTION TABLE (EACH 4-BIT BUFFER) INPUTS OE L L H A H L X OUTPUT Y H L Z FIGURE 1. LOAD CIRCUIT FOR OUTPUTS Memory Figure Note: 1. CL includes probe and jog capacitance . PARAMETER MEASUREMENT INFORMATION TEST tPLH/tPHL tPLZ/tPZL tPHZ/tPZH S1 Open 6V GND FIGURE 2. PULSE DURATION 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 5 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs FIGURE 3. SETUP AND HOLD TIMES 54LVTH162244 FIGURE 4. PROPAGATION DELAY TIMES INVERTING AND NON-INVERTING OUTPUTS Memory FIGURE 5. OUTPUT ENABLE TIMING Figure Notes: 2. All input pulses are supplied by generators having the following characteristics: PRR < 10 MHz, ZO = 50 , tr < 2.5 ns, tf < 2.5 ns. 3. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. 4. The outputs are measured one at a time with one transition per measurement. 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 6 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 Memory 48 PIN RAD-PAK(R) FLAT PACKAGE SYMBOL MIN A b c D E E1 E2 E3 e L Q S1 N 0.275 0.000 0.005 0.121 0.008 0.004 -0.370 -0.200 0.075 DIMENSION NOM 0.130 0.010 0.006 0.620 0.380 -0.210 0.085 0.025 BSC 0.285 0.019 0.018 48 0.295 0.045 -MAX 0.139 0.014 0.006 0.640 0.390 0.410 0.220 -- F48-01 Note: All dimensions in inches 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 7 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs Important Notice: 54LVTH162244 These data sheets are created using the chip manufacturer's published specifications. Maxwell Technologies verifies functionality by testing key parameters either by 100% testing, sample testing or characterization. The specifications presented within these data sheets represent the latest and most accurate information available to date. However, these specifications are subject to change without notice and Maxwell Technologies assumes no responsibility for the use of this information. Maxwell Technologies' products are not authorized for use as critical components in life support devices or systems without express written approval from Maxwell Technologies. Any claim against Maxwell Technologies must be made within 90 days from the date of shipment from Maxwell Technologies. Maxwell Technologies' liability shall be limited to replacement of defective parts. Memory 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 8 (c)2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs Product Ordering Options 54LVTH162244 Model Number 54LVTH162244 RP F X Feature Option Details Screening Flow Monolithic S = Maxwell Class S B = Maxwell Class B E = Engineering (testing @ +25C) I = Industrial (testing @ -55C, +25C, +125C) Memory Package F = Flat Pack Radiation Feature RP = RAD-PAK(R) package Base Product Nomenclature 16-Bit Buffers/Drivers with 3-State Outputs 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 9 (c)2001 Maxwell Technologies. All rights reserved. |
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