54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs Memory Logic Diagram FEATURES: DESCRIPTION: • RAD-PAK® radiation-hardened against natural space radiation • 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 • Typical VOLP (Output ground bounce) < 0.8V at VCC = 3.3V, TA = 25°C • 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 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. 1000607 The outputs, which are designed to source or sink up to 12 mA, include equivalent 22-Ω 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® 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. 12.19.01 Rev 1 (858) 503-3300 - Fax: (858) 4503-3301 - www.maxwell.com All data sheets are subject to change without notice 1 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs TABLE 1. PINOUT DESCRIPTION SYMBOL DESCRIPTION 1, 48, 25, 24 1OE-4OE Output Enable 2, 3, 5, 6 1Y1-1Y4 Output 4, 10, 15, 21, 28, 34, 39, 45 GND Ground 7, 18, 31, 42 VCC Supply Voltage 8, 9, 11, 12 2Y1-2Y4 Output 13, 14, 16, 17 3Y1-3Y4 Output 19, 20, 22, 23 4Y1-4Y4 Output 47, 46, 44, 43 1A1-1A4 Input 41, 40, 38, 37 2A1-2A4 Input 36, 35, 33, 32 3A1-3A4 Input 30, 29, 27, 26 4A1-4A4 Input Memory PIN TABLE 2. 162244 ABSOLUTE MAXIMUM RATINGS 1 PARAMETER SYMBOL MIN MAX UNIT Supply Voltage Range VCC -0.5 4.6 V Input Voltage Range 2 VI -0.5 7 V Voltage range applied to any output in the high-impedance or power-off state 2 VO -0.5 7 V Voltage range applied to any output in the high state 2 VO -0.5 to VCC 0.5 V Current into any output in the low state IO -- 30 mA IO 30 -- mA IIK (VI < 0) -- -50 mA IOK (VO < 0) -- -50 mA Operating Temperature TA -55 125 °C Storage Temperature Range TS -65 150 °C Operating Temperature Range TA -55 125 °C Current into any output in the high state 3 Input clamp current Output clamp current 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 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs TABLE 3. DELTA LIMITS PARAMETER VARIATION ICC(OP) ±10% of specified value on Table 5 IOZH ±10% of specified value on Table 5 IOZL ±10% of specified value on Table 5 TABLE 4. 162244 RECOMMENDED OPERATING CONDITIONS1 MIN MAX UNIT Supply Voltage VCC 2.7 3.6 V High-level Input Voltage VIH 2 -- V Low-level Input Voltage VIL -- 0.8 V Input Voltage VI -- 5.5 V High-level output current IOH -- -12 mA Low-level output current IOL -- 12 mA ∆t/∆v -- 10 ns/V ∆t/∆VCC 200 -- µs/V TA -55 125 °C Input Transition Rise or Fall Rate Outputs enabled Power-up ramp rate Operating Temperature Memory SYMBOL PARAMETER 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 +125°C, UNLESS OTHERWISE SPECIFIED) PARAMETER SYMBOL TEST CONDITIONS MIN MAX UNIT Input Clamp Voltage VIK VCC = 2.7 II = -18mA -- -1.2 V High-Level Output Voltage VOH VCC = 3V IOH = -12 mA 2 -- V Low-Level Output Voltage VOL VCC = 3V IOL = 12 mA -- 0.8 V VI = 5.5V -- 10 µA Input Current II VCC = 0 or 3.6V VCC = 3.6V VI = VCC or GND Control inputs -- ±1 VCC = 3.6V VI = VCC Data Inputs -- 1 -- -5 75 -- -75 -- -- 5 VI = 0 Hold Current II(HOLD) VCC = 3V VI = 0.8V VI = 2V Output Disabled Leakage Current - High 1000607 IOZH VCC = 3.6V, VO = 3V 12.19.01 Rev 1 Data Inputs µA µA All data sheets are subject to change without notice 3 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs TABLE 5. 162244 DC ELECTRICAL CHARACTERISTICS (VCC = 3.3V ±10%, TA = -55 TO +125°C, UNLESS OTHERWISE SPECIFIED) PARAMETER SYMBOL Output Disabled Leakage Current - Low IOZL TEST CONDITIONS VCC = 3.6V, VO = 0.5V MIN MAX UNIT -- -5 µA Power Up Current IOZPU2 VCC = 0 to 1.5V, VO = 0.5V to 3V, OE = don’t care -- ±100 µA Power Down Current IOZPD2 VCC = 1.5V to 0, VO = 0.5V to 3V, OE = don’t care -- ±100 µA mA Supply Current ICC VCC = 3.6V Outputs high -- 0.19 IO = 0 Outputs low -- 5 Outputs disabled -- 0.19 ∆ICC 1 VCC = 3V to 3.6V, One input at VCC -0.6V, Other inputs -- 0.2 mA VI = VCC or GND Delta Supply Current at VCC or GND Input Capacitance CI 2 VI = 3V or 0 -- 8 pF Input Output Capacitance CO VO = 3V or 0 -- 15 pF 2 Memory 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. TABLE 6. 162244 AC ELECTRICAL CHARACTERISTICS (TA = -55 TO +125°C, CL = 50 PF, UNLESS OTHERWISE SPECIFIED) PARAMETER VCC = 3.3V ±V SYMBOL VCC = 2.7V UNIT MIN MAX MIN MAX Propogation Delay Time A to Y tPLH 1.1 4.6 -- 5.1 tPHL 1.1 3.9 -- 4.5 Output Enable Time OE to Y tPZH 1.1 5.4 -- 6.7 tPZL 1.3 4.9 -- 6.1 Output Disable Time OE to Y tPHZ 1.6 5.9 -- 6.5 tPLZ 1 5.9 -- 5.8 Output Skew tsk(o) -- -- -- -- 1000607 12.19.01 Rev 1 ns ns ns ns All data sheets are subject to change without notice 4 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs TABLE 7. FUNCTION TABLE (EACH 4-BIT BUFFER) INPUTS OUTPUT OE A Y L H H L L L H X Z FIGURE 1. LOAD CIRCUIT FOR OUTPUTS Memory Figure Note: 1. CL includes probe and jog capacitance . PARAMETER MEASUREMENT INFORMATION TEST S1 tPLH/tPHL Open tPLZ/tPZL 6V tPHZ/tPZH GND FIGURE 2. PULSE DURATION 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 5 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs FIGURE 3. SETUP AND HOLD TIMES 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 Ω, 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 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs Memory 48 PIN RAD-PAK® FLAT PACKAGE SYMBOL DIMENSION MIN NOM MAX 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 -- N 48 F48-01 Note: All dimensions in inches 1000607 12.19.01 Rev 1 All data sheets are subject to change without notice 7 ©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 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 ©2001 Maxwell Technologies. All rights reserved. 54LVTH162244 16-Bit Buffers/Drivers with 3-State Outputs Product Ordering Options Model Number 54LVTH162244 RP X Option Details Feature Screening Flow Monolithic S = Maxwell Class S B = Maxwell Class B E = Engineering (testing @ +25°C) I = Industrial (testing @ -55°C, +25°C, +125°C) Package F = Flat Pack Radiation Feature RP = RAD-PAK® package Base Product Nomenclature 16-Bit Buffers/Drivers with 3-State Outputs 12.19.01 Rev 1 All data sheets are subject to change without notice Memory 1000607 F 9 ©2001 Maxwell Technologies. All rights reserved.