54ABT16244 16-Bit Buffer/Line Driver with TRI-STATE ® Outputs General Description The ’ABT16244 contains sixteen non-inverting buffers with TRI-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus oriented transmitter/ receiver. The device is nibble controlled. Individual TRI-STATE control inputs can be shorted together for 8-bit or 16-bit operation. Features n Separate control logic for each nibble n 16-bit version of the ’ABT244 n Outputs sink capability of 48 mA, source capability of 24 mA n Guaranteed output skew n Guaranteed multiple output switching specifications n Output switching specified for both 50 pF and 250 pF loads n Guaranteed simultaneous switching noise level and dynamic threshold performance n Guaranteed latchup protection n High impedance glitch free bus loading during entire power up and power down cycle n Non-destructive hot insertion capability n Standard Microcircuit Drawing (SMD) 5962-9317402 Ordering Code: Military Package Package Description Number 54ABT16244W-QML WA48A 48-Lead Cerpack Logic Symbol Connection Diagram Pin Assignment for Cerpack DS100223-1 Pin Description Pin Names Description OEn Output Enable Inputs (Active Low) I0–I15 Inputs O0–O15 Outputs DS100223-2 TRI-STATE ® is a registered trademark of National Semiconductor Corporation. © 1998 National Semiconductor Corporation DS100223 www.national.com 54ABT16244 16-Bit Buffer/Line Driver with TRI-STATE Outputs July 1998 Functional Description The ’ABT16244 contains sixteen non-inverting buffers with TRI-STATE outputs. The device is nibble (4 bits) controlled with each nibble functioning identically, but independent of the other. The control pins can be shorted together to obtain full 16-bit operation. Truth Tables Inputs Outputs Outputs OE2 OE1 I0–I3 O0–O3 L L L L L L L H H L H H H X Z H X Z I12–I15 O12–O15 Inputs I4–I7 Inputs Inputs Outputs OE4 O4–O7 Outputs OE3 I8–I11 O8–O11 L L L L L L L H H L H H H X Z H X Z H = High Voltage Level L = Low Voltage Level X = Immaterial Z = High Impedance Logic Diagram DS100223-3 www.national.com 2 Absolute Maximum Ratings (Note 1) Over Voltage Latchup (I/O) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Any Output in the Disabled or Power-off State in the HIGH State Current Applied to Output in LOW State (Max) DC Latchup Source Current −65˚C to +150˚C −55˚C to +125˚C Recommended Operating Conditions −55˚C to +175˚C Free Air Ambient Temperature Military Supply Voltage Military Minimum Input Edge Rate Data Input Enable Input −0.5V to +7.0V −0.5V to +7.0V −30 mA to +5.0 mA −0.5V to 5.5V −0.5V to VCC 10V −55˚C to +125˚C +4.5V to +5.5V (∆V/∆t) 50 mV/ns 20 mV/ns Note 1: Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired. Functional operation under these conditions is not implied. Note 2: Either voltage limit or current limit is sufficient to protect inputs. twice the rated IOL (mA) −500 mA DC Electrical Characteristics Symbol Parameter ABT16244 Units VCC Conditions Min Typ Max VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Diode Voltage VOH Output HIGH Voltage VOL Output LOW Voltage IIH Input HIGH Current 2.0 V Recognized HIGH Signal 0.8 V −1.2 V Recognized LOW Signal IIN = −18 mA Min 54ABT 2.5 V Min 54ABT 2.0 V Min 54ABT 0.55 V Min 5 µA Max 7 µA Max −5 µA Max VIN = 0.5V (Note 3) V 0.0 VIN = 0.0V IID = 1.9 µA µA 0 − 5.5V 5 IBVI Input HIGH Current IOH = −3 mA IOH = −24 mA IOL = 48 mA VIN = 2.7V (Note 3) VIN = VCC VIN = 7.0V Breakdown Test IIL Input LOW Current −5 VID Input Leakage Test IOZH Output Leakage Current IOZL Output Leakage Current IOS Output Short-Circuit Current ICEX IZZ 4.75 50 −50 µA 0 − 5.5V −275 mA Max Output High Leakage Current 50 µA Max Bus Drainage Test 100 µA 0.0 −100 All Other Pins Grounded VOUT = 2.7V; OEn = 2.0V VOUT = 0.5V; OEn = 2.0V VOUT = 0.0V VOUT = VCC VOUT = 5.5V All Other Pins GND ICCH Power Supply Current 2.0 mA Max All Outputs HIGH ICCL Power Supply Current 60 mA Max ICCZ Power Supply Current 2.0 mA Max All Outputs LOW OEn = VCC ICCT Additional ICC/Input Outputs Enabled 2.5 mA Outputs TRI-STATE 2.5 mA Outputs TRI-STATE 50 µA Enable Input VI = VCC − 2.1V Data Input VI = VCC − 2.1V mA/ All Others at VCC or GND Outputs Open, OEn = GND ICCD Dynamic ICC No Load (Note 3) 0.1 MHz All Others at VCC or GND VI = VCC − 2.1V Max Max One Bit Toggling, 50% Duty Cycle Note 3: Guaranteed but not tested. 3 www.national.com DC Electrical Characteristics Symbol Parameter Min Max Units VCC VOLP Quiet Output Maximum Dynamic VOL 1.1 V 5.0 VOLV Quiet Output Minimum Dynamic VOL -0.45 V 5.0 Conditions CL = 50 pF, RL = 500Ω TA = 25˚C (Note 4) TA = 25˚C(Note 4) Note 4: Max number of outputs defined as (n). n − 1 data inputs are driven 0V to 3V. One output at LOW. AC Electrical Characteristics Symbol Parameter 54ABT TA = −55˚C to +125˚C VCC = 4.5V–5.5V Units CL = 50 pF Min Max tPLH Propagation 0.5 5.3 tPHL Delay Data 0.5 5.9 ns to Outputs tPZH Output Enable 1.5 6.8 tPZL Time 1.5 7.0 tPHZ Output Disable 1.5 7.7 tPLZ Time 1.5 6.5 ns ns Capacitance Symbol Parameter Typ Units CIN Input Capacitance 5.0 pF COUT (Note 5) Output Capacitance 9.0 pF Note 5: COUT is measured at frequency f = 1 MHz; per MIL STD-883B, Method 3012. www.national.com 4 Conditions TA = 25˚C VCC = 5.0V VCC = 5.0V Capacitance (Continued) tPLH vs Temperature (TA) CL = 50 pF, 1 Output Switching tPHL vs Temperature (TA) CL = 50 pF, 1 Output Switching DS100223-12 tPLH vs Load Capacitance 1 Output Switching, TA = 25˚C DS100223-13 tPHL vs Load Capacitance 1 Output Switching, TA = 25˚C DS100223-15 DS100223-14 tPLH vs Load Capacitance 16 Outputs Switching, TA = 25˚C tPHL vs Load Capacitance 16 Outputs Switching, TA = 25˚C DS100223-16 tPZL vs Temperature (TA) CL = 50 pF, 1 Output Switching DS100223-17 tPLZ vs Temperature (TA) CL = 50 pF, 1 Output Switching DS100223-19 DS100223-18 Dashed lines represent design characteristics; for specified guarantees, refer to AC Characteristics Tables. 5 www.national.com Capacitance (Continued) tPZH vs Temperature (TA) CL = 50 pF, 1 Output Switching tPHZ vs Temperature (TA) CL = 50 pF, 1 Output Switching DS100223-20 tPZH vs Temperature (TA) CL = 50 pF, 16 Outputs Switching DS100223-21 tPHZ vs Temperature (TA) CL = 50 pF, 16 Outputs Switching DS100223-22 tPZL vs Temperature (TA) CL = 50 pF, 16 Outputs Switching DS100223-23 tPLZ vs Temperature (TA) CL = 50 pF, 16 Outputs Switching DS100223-24 DS100223-25 Dashed lines represent design characteristics; for specified guarantees, refer to AC Characteristics Tables. www.national.com 6 Capacitance (Continued) tPZL vs Load Capacitance 16 Outputs Switching, TA = 25˚C tPZH vs Load Capacitance 16 Outputs Switching, TA = 25˚C DS100223-26 DS100223-27 tPLH and tPHL vs Number Output Switching VCC = 5.0V, TA = 25˚C, CL = 50 pF DS100223-28 ICC vs Frequency Average, TA = 25˚C, VCC = 5.5V DS100223-29 Dashed lines represent design characteristics; for specified guarantees, refer to AC Characteristics Tables. 7 www.national.com AC Loading DS100223-7 FIGURE 5. TRI-STATE Output HIGH and LOW Enable and Disable Times DS100223-4 *Includes jig and probe capacitance FIGURE 1. Standard AC Test Load DS100223-8 FIGURE 2. Propagation Delay Waveforms for Inverting and Non-Inverting Functions DS100223-6 FIGURE 3. Test Input Pulse Requirements Amplitude Rep Rate tW tr tf 3.0V 1 MHz 500 ns 2.5 ns 2.5 ns FIGURE 4. Test Input Signal Requirements www.national.com 8 9 54ABT16244 16-Bit Buffer/Line Driver with TRI-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted 48-Lead Cerpack NS Package Number WA48A LIFE SUPPORT POLICY NATIONAL’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 NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 2. A critical component in any component of a life support 1. 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