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| 74FR16541 16-Bit Buffer/Line Driver with 3-STATE Outputs October 1989 Revised August 1999 74FR16541 16-Bit Buffer/Line Driver with 3-STATE Outputs General Description The 74FR16541 contains sixteen non-inverting buffers with 3-STATE outputs designed to be employed as a memory and address driver, clock driver, or bus-oriented transmitter/receiver. The device is byte controlled. Each byte has separate 3-STATE control inputs which can be shorted together for full 16-bit operation. Features s Non-inverting buffers s 3-STATE outputs drive bus lines s Output sink capability of 64 mA, source capability of 15 mA s Separate 3-STATE control pins for each byte s Guaranteed multiple output switching, 250 pF delays and pin-to-pin skew s 16-bit version of the 74F541, 74F244 or 74FR244 Ordering Code: Order Number 74FR16541QC 74FR16541SSC Package Number V44A MS48A Package Description 44-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.650 Square 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter "X" to the ordering code. Connection Diagrams Pin Assignment for SSOP Pin Assignment for PLCC Logic Symbol (c) 1999 Fairchild Semiconductor Corporation DS010616 www.fairchildsemi.com 74FR16541 Pin Descriptions Pin Names OEn I0-I15 O0-O15 Description Output Enable Inputs Inputs 3-STATE Outputs Truth Table Inputs Outputs Byte1 [0:7] Byte2 [8:15] I0-I7 I8-I15 O0-O7 O8-O15 OE1 L H X L L H L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance OE2 L X H L L H L OE3 L L L H X H L OE4 L L L X H H L H X X L H X L H L H X X X L H Z Z L H Z L H L H Z Z Z L Logic Diagram www.fairchildsemi.com 2 74FR16541 Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min) Twice the Rated IOL (mA) 4000V -0.5V to VCC -0.5V to +5.5V -65C to +150C -55C to +125C -55C to +150C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA Recommended Operating Conditions Free Air Ambient Temperature Supply Voltage 0C to +70C +4.5V to +5.5V 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. DC Electrical Characteristics Symbol VIH VIL VCD VOH VOL IIH IBVI IIL IOS IOZH IOZL ICEX VID IOD IZZ ICCH ICCL ICCZ CIN Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Input LOW Current Output Short-Circuit Current Output Leakage Current Output Leakage Current Output HIGH Leakage Current Input Leakage Test Output Circuit Leakage Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current Input Capacitance 35 92 36 8 4.75 3.75 100 50 110 50 -100 0 0 2.4 2.0 0.55 5.0 7.0 -120 -225 20 -20 50 Min 2.0 0.8 -1.2 Typ Max Units V V V V V A A A mA A A A V A A mA mA mA pF Min Min Min Max Max Max Max Max Max Max 0.0 0.0 0.0 Max Max Max 5.0 VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -3 mA IOH = -15 mA IOL = 64 mA VIN = 2.7V VIN = 7.0V (OEn) VIN = 0.5V VOUT = 0V VOUT = 2.7V VOUT = 0.5V VOUT = VCC IID = 1.9 A All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VOUT = 5.25V VO = HIGH VO = LOW VO = HIGH Z 3 www.fairchildsemi.com 74FR16541 AC Electrical Characteristics TA = +25C Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Propagation Delay In to On Output Enable Time 1.5 1.5 3.6 3.6 1.8 1.8 VCC = +5.0V CL = 50 pF Typ 2.8 2.4 5.8 6.6 4.0 4.1 Max 4.3 4.3 11.6 11.6 6.6 6.6 TA = 0C to +70C VCC = +5.0V CL = 50 pF Min 1.5 1.5 3.6 3.6 1.8 1.8 Max 4.3 4.3 11.6 11.6 6.6 6.6 ns ns ns Units Extended AC Characteristics TA = 0C to +70C VCC = +5.0V Symbol Parameter CL = 50 pF 16 Outputs Switching (Note 4) Min tPLH tPHL tPZH tPZL tPHZ tPLZ tosHL (Note 3) tosLH (Note 3) tost (Note 3) Pin-to-Pin Skew for HL Transitions Pin-to-Pin Skew for LH Transitions Pin-to-Pin Skew for HL/LH Transitions Output Disable Time Propagation Delay An to Bn or Bn to An Output Enable Time 1.5 1.5 3.6 3.6 1.8 1.8 Max 5.7 5.7 12.5 12.5 6.6 6.6 1.5 1.3 2.0 Min 3.0 3.0 (Note 5) Max 9.0 9.0 ns ns ns ns ns ns TA = 0C to +70C VCC = +5.0V CL = 250 pF Units Note 3: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same device. The specification applies to any outputs switching HIGH-to-LOW, (tosHL), LOW-to-HIGH, (tosLH), or HIGH-to-LOW and/or LOW-to-HIGH, (tost). Specifications guaranteed with all outputs switching in phase. Note 4: This specification is guaranteed but not tested. The limits apply to propagation delays for all paths described switching in phase, i.e., all LOW-to-HIGH, HIGH-to-LOW, 3-STATE-to-HIGH, etc. Note 5: These specifications guaranteed but not tested. The limits represent propagation delays with 250 pF load capacitors in place of the 50 pF load capacitors in the standard AC load. This specification pertains to single output switching only. www.fairchildsemi.com 4 74FR16541 Physical Dimensions inches (millimeters) unless otherwise noted 44-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.650 Square Package Number V44A 5 www.fairchildsemi.com 74FR16541 16-Bit Buffer/Line Driver with 3-STATE Outputs Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Package Number MS48A Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right at any time without notice to change said circuitry and specifications. LIFE SUPPORT POLICY FAIRCHILD'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 FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user. www.fairchildsemi.com 6 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com |
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