Revised August 1999 74FR16541 16-Bit Buffer/Line Driver with 3-STATE Outputs General Description Features 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. ■ Non-inverting buffers ■ 3-STATE outputs drive bus lines ■ Output sink capability of 64 mA, source capability of 15 mA ■ Separate 3-STATE control pins for each byte ■ Guaranteed multiple output switching, 250 pF delays and pin-to-pin skew ■ 16-bit version of the 74F541, 74F244 or 74FR244 Ordering Code: Order Number Package Number 74FR16541QC V44A 74FR16541SSC 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 © 1999 Fairchild Semiconductor Corporation DS010616 www.fairchildsemi.com 74FR16541 16-Bit Buffer/Line Driver with 3-STATE Outputs October 1989 74FR16541 Pin Descriptions Pin Names Description OEn Output Enable Inputs I0–I15 Inputs O0–O15 3-STATE Outputs Truth Table Inputs Outputs Byte1 [0:7] Byte2 [8:15] I0–I7 I8–I15 O0–O7 O8–O15 OE1 OE2 OE3 OE4 L L L L H H X L L X H L L L L H X L X L Z L L X H H X H Z H H H H X X Z Z L L L L L L L L H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance Logic Diagram www.fairchildsemi.com 2 H H H X L Z L X H Z H Recommended Operating Conditions Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Free Air Ambient Temperature Junction Temperature under Bias −55°C to +150°C Supply Voltage 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V VCC Pin Potential to Ground Pin Input Voltage (Note 2) −0.5V to +7.0V Input Current (Note 2) −30 mA to +5.0 mA Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output −0.5V to VCC 3-STATE Output −0.5V 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. Current Applied to Output in LOW State (Max) Note 2: Either voltage limit or current limit is sufficient to protect inputs. Twice the Rated IOL (mA) ESD Last Passing Voltage (Min) 4000V DC Electrical Characteristics Symbol Parameter Min Typ Max 2.0 Units VIH Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH 2.4 Voltage 2.0 VCC V Conditions Recognized as a HIGH Signal Recognized as a LOW Signal Min V Min IIN = −18 mA IOH = −3 mA IOH = −15 mA VOL Output LOW Voltage 0.55 V Min IOL = 64 mA IIH Input HIGH Current 5.0 µA Max VIN = 2.7V IBVI Input HIGH Current 7.0 µA Max −120 µA Max Breakdown Test IIL IOS Input LOW Current Output Short-Circuit (OEn) VIN = 0.5V −225 mA Max VOUT = 0V IOZH Output Leakage Current 0 20 µA Max VOUT = 2.7V IOZL Output Leakage Current 0 −20 µA Max VOUT = 0.5V ICEX Output HIGH Leakage Current 50 µA Max VOUT = VCC VID Input Leakage Test V 0.0 Current −100 VIN = 7.0V 4.75 IID = 1.9 µA All Other Pins Grounded IOD Output Circuit Leakage Current 3.75 µA 0.0 VIOD = 150 mV IZZ Bus Drainage Test 100 µA 0.0 VOUT = 5.25V ICCH Power Supply Current 35 50 mA Max VO = HIGH ICCL Power Supply Current 92 110 mA Max VO = LOW ICCZ Power Supply Current 36 50 mA Max VO = HIGH Z CIN Input Capacitance 8 pF 5.0 All Other Pins Grounded 3 www.fairchildsemi.com 74FR16541 Absolute Maximum Ratings(Note 1) 74FR16541 AC Electrical Characteristics Symbol Parameter TA = +25°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max tPLH Propagation Delay 1.5 2.8 4.3 1.5 4.3 tPHL In to On 1.5 2.4 4.3 1.5 4.3 tPZH Output Enable Time tPZL tPHZ Output Disable Time tPLZ 3.6 5.8 11.6 3.6 11.6 3.6 6.6 11.6 3.6 11.6 1.8 4.0 6.6 1.8 6.6 1.8 4.1 6.6 1.8 6.6 Units ns ns ns Extended AC Characteristics Symbol Parameter TA = 0°C to +70°C TA = 0°C to +70°C VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 250 pF Units 16 Outputs Switching (Note 4) (Note 5) Min Max Min Max tPLH Propagation Delay 1.5 5.7 3.0 9.0 tPHL An to Bn or Bn to An 1.5 5.7 3.0 9.0 tPZH Output Enable Time 3.6 12.5 3.6 12.5 tPZL tPHZ Output Disable Time tPLZ tosHL Pin-to-Pin Skew (Note 3) for HL Transitions tosLH Pin-to-Pin Skew (Note 3) for LH Transitions tost Pin-to-Pin Skew (Note 3) for HL/LH Transitions 1.8 6.6 1.8 6.6 ns ns ns 1.5 ns 1.3 ns 2.0 ns 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: 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. 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 www.fairchildsemi.com 6