54BCT244 Octal Buffers/Drivers Memory Logic Diagram FEATURES: DESCRIPTION: • 3-state outputs drive bus lines or buffer memory address registers • RAD-PAK® radiation-hardened against natural space radiation • Total dose hardness: - >100 krad (Si), depending upon space mission • Package: - 20-pin RAD-PAK® flat package • Operating temperature range: -55 to 125°C • P-N-P inputs reduce DC loading • Typical VOLP (output ground bounce) - < 0.8 V at VCC=3.3 V, TA=25°C • ESD protection exceeds 2000 V Maxwell Technologies’ 54BCT244 octal buffers and line drivers features a greater than 100 krad (Si) total dose tolerance; depending upon space misssion. The 54BCT244 is organized as two 4-bit drivers with separate output enable (OE) inputs. When OE is low, the device passes data from the A inputs to the Y outputs. When OE is high, the outputs are in the high impedance state. 1000608 (858) 503-3300 - Fax: (858) 503-3301 - www.maxwell.com 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 a space mission. In a GEO orbit, RAD-PAK provides true greater than 100 krad (Si) total radiation dose tolerance, dependent upon space mission. This product is available with packaging and screening up to Class S. 12.19.01 Rev 5 All data sheets are subject to change without notice 1 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers TABLE 1. PINOUT DESCRIPTION PIN SYMBOL DESCRIPTION 1, 19 1OE-2OE Output Enables 2, 4, 6, 8 1A1-1A4 Input 3, 5, 7, 9 2Y4-2Y1 Output 10 GND Ground 11, 13, 15, 17 2A1-2A4 Input 12, 14, 16, 18 1Y4-1Y1 Output 20 VCC Power Supply TABLE 2. 54BCT244 ABSOLUTE MAXIMUM RATINGS 1 MIN MAX UNIT Supply Voltage Range VCC -0.5 7.0 V Input Voltage Range2 VI -0.5 7.0 V Voltage Range Applied to any Output in the Disable or Power-Off State2 VO -0.5 5.5 V Voltage Range Applied to any Output in High State2 VO -0.5 VCC V Current Into Any Output in the Low State IO -- 96 mA Total Power Dissipation @ TA = +55 °C 3 PD -- 651 mW Operating Temperature Range TA -55 125 °C Storage Temperature Range TS -65 150 °C Memory SYMBOL PARAMETER 1. Stresses above the absolute maximum rating may cause permanent damage to the device. Extended operation at the maximum levels may degrade performance and affect reliability. 2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 3. Must be able to withstand the additional PD due to short circuit test, e.g. IDS. The PD number is based upon dc values. TABLE 3. DELTA LIMITS 1000608 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 12.19.01 Rev 5 All data sheets are subject to change without notice 2 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers TABLE 4. 54BCT244 RECOMMENDED OPERATING CONDITIONS1 PARAMETER SYMBOL MIN MAX UNIT Supply Voltage VCC 4.5 5.5 V High-Level Input Voltage VIH 2.0 -- V Low-Level Input Voltage VIL -- 0.8 V High-Level Output Current IOH -- -12 mA Low-Level Output Current IOL -- 48 mA Input Clamp Current IIK -- -18 mA ΘJC -- 5.56 °C/W TA -55 125 °C Thermal Impedance — Flat Package Operating Temperature 1. All unused control inputs must be held high or low to ensure proper device operation. TABLE 5. 54BCT244 DC ELECTRICAL CHARACTERISTICS PARAMETER SYMBOL Input Clamp Voltage VIK High-Level Output Voltage Low-Level Output Voltage TEST CONDITIONS VCC = 4.5 V MIN MAX UNIT -- -1.2 V IOH = -3 mA 2.4 -- V IOH = -12 mA 2 -- -- 0.55 V II = -18 mA VOH VCC = 4.5 V VOL VCC = 4.5 V IOL = 48 mA II VCC = 5.5 V VI = 7 V 0.1 mA Off-State Output Current High-Level Voltage Applied IOZH VCC = 5.5 V VI = 2.7 V -- 50 µA Off-State Output Current Low-Level Voltage Applied IOZL VCC = 5.5 V VO = 0.5 V -- -50 µA High Level Input Current IIH1 VCC = 5.5 V VI = 7 V -- 0.1 mA IIH2 VCC = 5.5 V VI = 2.7 V -- 20 µA Input Current IIL VCC = 5.5 V VI = 0.5 V -- -1.0 mA 1 IOS VCC = 5.5 V VO = 0.0 V -100 -225 mA Supply Current, Outputs High ICCH VCC = 5.5 V Outputs Open -- 40 mA Supply Current, Outputs Low ICCL VCC = 5.5 V Outputs Open -- 80 mA Supply Current, Outputs Disabled to High Impedance State ICCZ VCC = 5.5 V Outputs Open -- 10 mA Low Level Input Current Short-circuit Output Current Memory (VCC = 5V ±10%, TA = -55 °C TO 125 °C, UNLESS OTHERWISE SPECIFIED) 1. Not more than one output should be shorted at one time and the duration of test shall not exceed one second. 1000608 12.19.01 Rev 5 All data sheets are subject to change without notice 3 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers TABLE 6. 54BCT244 AC ELECTRICAL CHARACTERISTICS (VCC = 5V ±10%, TA = -55 °C TO 125 °C, UNLESS OTHERWISE SPECIFIED) PARAMETER Propagation Delay Time An to Yn Output Enable Time OE to Yn TEST CONDITIONS MIN MAX UNIT tPLH VCC = 4.5 to 5.5 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 0.9 5.3 ns tPHL TA = -55 to +125 °C 1.4 6 tPLH VCC = 5.0 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 1.2 4.4 tPHL TA = +25 °C 1.7 5 tPZH VCC = 4.5 to 5.5 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 2 9 tPZL TA = -55 to +125 °C 2 9.4 tPZH VCC = 5.0 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 2 7.8 tPZL TA= +25 °C 2 8.1 tPHZ VCC = 4.5 to 5.5 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 2 8 tPLZ TA = -55 to +125 °C 2 9.8 tPHZ VCC = 5.0 V CL = 50 pF R1 = 500 Ω R2 = 500 Ω 2 6.7 tPLZ TA= +25 °C 2 7.6 ns Memory Output Disable Time OE to Yn SYMBOL ns TABLE 7. FUNCTION TABLE (EACH BUFFER) INPUTS 1000608 OUTPUT OE A Y l H H L L L H X Z 12.19.01 Rev 5 All data sheets are subject to change without notice 4 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers FIGURE 1. LOAD CIRCUIT FOR OUTPUTS FIGURE NOTE: 1. CL INCLUDES PROBE AND JOG CAPACITANCE PARAMETER MEASUREMENT INFORMATION S1 TPLH/TPHL Open TPLZ/TPZL 6V TPHZ/TPZH GND Memory TEST FIGURE 2. VOLTAGE WAVEFORMS PULSE DURATION FIGURE 3. OUTPUT ENABLE TIMING 1000608 12.19.01 Rev 5 All data sheets are subject to change without notice 5 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers FIGURE 4. VOLTAGE SETUP AND HOLD TIMES FIGURE 5. PROPAGATION DELAY TIMES INVERTING AND NON-INVERTING OUTPUTS Memory Figure Notes: 2. All input pulses are supplied by generators having the following characteristics: PRR < 10 MHz, ZO = 50Ω, 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. 1000608 12.19.01 Rev 5 All data sheets are subject to change without notice 6 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers Memory 20 PIN RAD-PAK® FLAT PACKAGE DIMENSION SYMBOL MIN NOM MAX A 0.128 0.141 0.154 b 0.015 0.017 0.022 c 0.003 0.005 0.009 D 0.470 0.480 0.490 E 0.287 0.295 0.303 E1 -- -- 0.333 E2 0.155 0.160 -- E3 0.030 0.068 -- e 0.050BSC L 0.370 0.380 0.390 Q 0.035 0.039 0.042 S1 0.005 0.007 -- N 20 F20-01 Note: All dimensions in inches 1000608 12.19.01 Rev 5 All data sheets are subject to change without notice 7 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers 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 1000608 12.19.01 Rev 5 All data sheets are subject to change without notice 8 ©2001 Maxwell Technologies All rights reserved. 54BCT244 Octal Buffers/Drivers Product Ordering Options Model Number 54BCT244 F 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 Octal Buffers/Drivers 12.19.01 Rev 5 All data sheets are subject to change without notice Memory 1000608 RP 9 ©2001 Maxwell Technologies All rights reserved.