54LVTH162244 MAXWELL | Alldatasheet
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All data sheets are subject to change without notice (858) 503-3300 - Fax: (858) 4503-3301 - www.maxwell.com 16-Bit Buffers/Drivers with 54LVTH162244 ©2001 Maxwell Technologies. All rights reserved. 3-State Outputs
12.19.01 Rev 11000607
FEATURES:
- R AD-PAK® radiation-hardened against natural space radia- tion
- Total dose hardness: - > 100 krad (Si), depending upon space mission
- Output ports have equivalent 22- Ω 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
- T y p i c a l V OLP (Output ground bounce) < 0.8V at VCC = 3.3V, TA = 25°C
- I OFF and power-up 3-state support hot insertion
- Bus hold on data inputs eliminates the need for external pull-up/pull-down resistors
- Distributed V CC and GND pin configuration minimizes high- speed switching noise
- Flow-through architecture optimizes PCB layout
- Package: 48 pin R AD-PAK flat pack DESCRIPTION: Maxwell Technologies’ 54LVTH162244 devices are 16-bit buff- ers and line drivers designed for low-voltage (3.3V) V CC oper- ation, 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- Ω series resistors to reduce over- shoot and undershoot. Active bus-hol d circuitry is provided to hold unused or floating data inputs at a valid logic level. Maxwell Technologies' patented RAD-PAK® packaging technol- ogy incorporates radiation shie lding in the microcircuit pack- age. It eliminates the need for box shielding while providing the required radiation shielding fo r a lifetime in orbit or space mission. In a GEO orbit, R AD-PAK provides greater than 100 krad (Si) radiation dose toleranc e. This product is available with screening up to Class S. Logic Diagram
TABLE 1. PINOUT DESCRIPTION TABLE 2. 162244 ABSOLUTE MAXIMUM RATINGS 1
- Stresses beyond listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress rat-
- The input and output negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed.
- This current flows only when the output is in the high state and V O > VCC.
TABLE 3. DELTA LIMITS TABLE 4. 162244 RECOMMENDED OPERATING CONDITIONS1
- All unused control inputs of the device must be hel d at high or low to ensure proper device operation.
TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS
- This is the increase in supply curr ent for each input that is at the specified TTL voltage level rather than VCC or GND.
TABLE 6. 162244 AC ELECTRICAL CHARACTERISTICS TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS
FIGURE 1. LOAD CIRCUIT FOR OUTPUTS
- CL includes probe and jog capacitance
FIGURE 2. PULSE DURATION TABLE 7. FUNCTION TABLE
FIGURE 3. SETUP AND HOLD TIMES FIGURE 4. PROPAGATION DELAY TIMES INVERTING AND NON-INVERTING OUTPUTS FIGURE 5. OUTPUT ENABLE TIMING
- All input pulses are supplied by generators having the following characteristics: PRR < 10 MHz, ZO = 50 Ω , tr < 2.5 ns, tf < 2.5
- Waveform 1 is for an output with internal conditions such t hat 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.
- The outputs are measured one at a time with one transition per measurement.
7All data sheets are subject to change without notice ©2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 Note: All dimensions in inches
48 PIN RAD-PAK® FLAT PACKAGE
A 0.121 0.130 0.139 b 0.008 0.010 0.014 c 0.004 0.006 0.006 D -- 0.620 0.640 E 0.370 0.380 0.390 E1 -- -- 0.410 E2 0.200 0.210 0.220 E3 0.075 0.085 -- e 0.025 BSC L 0.275 0.285 0.295 Q 0.000 0.019 0.045 S1 0.005 0.018 -- N4 8
8All data sheets are subject to change without notice ©2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 Important Notice: 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 li fe 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 Tech- nologies. Maxwell Technologies’ liability shall be limited to replacement of defective parts.
9All data sheets are subject to change without notice ©2001 Maxwell Technologies. All rights reserved. 16-Bit Buffers/Drivers with 3-State Outputs 54LVTH162244 Feature Option Details54LVTH162244 RP F X Screening Flow Package Radiation Feature Base Product Nomenclature Monolithic S = Maxwell Class S B = Maxwell Class B E = Engineering (testing @ +25°C I = Industrial (testing @ -55°C, +25°C, +125°C) F = Flat Pack RP = R AD-PAK® package 16-Bit Buffers/Drivers with 3-State Outputs