Revised October 2000 74F543 Octal Registered Transceiver General Description Features The F543 octal transceiver contains two sets of D-type latches for temporary storage of data flowing in either direction. Separate Latch Enable and Output Enable inputs are provided for each register to permit independent control of inputting and outputting in either direction of data flow. The A outputs are guaranteed to sink 24 mA while the B outputs are rated for 64 mA. ■ 8-bit octal transceiver ■ Back-to-back registers for storage ■ Separate controls for data flow in each direction ■ A outputs sink 24 mA ■ B outputs sink 64 mA Ordering Code: Order Number 74F543SC 74F543MSA Package Number M24B MSA24 Package Description 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 74F543PC N24A 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-011, 0.600 Wide 74F543SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC © 2000 Fairchild Semiconductor Corporation DS009554 www.fairchildsemi.com 74F543 Octal Registered Transceiver April 1988 74F543 Unit Loading/Fan Out Pin Names U.L. Input IIH/IIL HIGH/LOW Output IOH/IOL 1.0/1.0 20 µA/−0.6 mA Description OEAB A-to-B Output Enable Input (Active LOW) OEBA B-to-A Output Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA CEAB A-to-B Enable Input (Active LOW) 1.0/2.0 20 µA/−1.2 mA CEBA B-to-A Enable Input (Active LOW) 1.0/2.0 20 µA/−1.2 mA LEAB A-to-B Latch Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA LEBA B-to-A Latch Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA A0–A7 A-to-B Data Inputs or 3.5/1.083 70 µA/−650 µA 150/40 (33.8) −3 mA/24 mA (20 mA) 3.5/1.083 70 µA/−650 µA 600/106.6 (80) −12 mA/64 mA (48 mA) B-to-A 3-STATE Outputs B0–B7 B-to-A Data Inputs or A-to-B 3-STATE Outputs Data I/O Control Table Functional Description The F543 contains two sets of eight D-type latches, with separate input and output controls for each set. For data flow from A to B, for example, the A-to-B Enable (CEAB) input must be LOW in order to enter data from A0–A7 or take data from B0–B7, as indicated in the Data I/O Control Table. With CEAB LOW, a LOW signal on the A-to-B Latch Enable (LEAB) input makes the A-to-B latches transparent; a subsequent LOW-to-HIGH transition of the LEAB signal puts the A latches in the storage mode and their outputs no longer change with the A inputs. With CEAB and OEAB both LOW, the 3-STATE B output buffers are active and reflect the data present at the output of the A latches. Control of data flow from B to A is similar, but using the CEBA, LEBA and OEBA inputs. Inputs Latch Output CEAB LEAB OEAB Status Buffers H X X Latched High Z X H X Latched — L L X Transparent — X X H — High Z L X L — Driving H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial A-to-B data flow shown; B-to-A flow control is the same, except using CEBA, LEBA and OEBA Logic Diagram Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays. www.fairchildsemi.com 2 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. Note 2: Either voltage limit or current limit is sufficient to protect inputs. Current Applied to Output in LOW State (Max) twice the rated IOL (mA) DC Electrical Characteristics Symbol Parameter Min Typ Max Input HIGH Voltage VIL Input LOW Voltage 0.8 V VCD Input Clamp Diode Voltage −1.2 V VOH Output HIGH Voltage VOL IIH IBVI 2.0 Units VIH 10% VCC 2.5 10% VCC 2.4 5% VCC 2.7 5% VCC 2.7 10% VCC 2.0 IOD IOH = −15 mA (Bn) IOL = 24 mA (A n) 5.0 µA Max VIN = 2.7V 7.0 µA Max 0.5 mA Max VIN = 5.5V (An, Bn) 50 µA Max VOUT = VCC V 0.0 µA 0.0 mA Max 0.5 Voltage 10% VCC 0.55 Input HIGH Current Input HIGH Current Input HIGH Current Output HIGH 4.75 Output Leakage 3.75 Circuit Current IIL IOH = −1 mA (An) Min 10% VCC Test Min V Output LOW Input Leakage IIN = −18 mA IOH = −3 mA (An, Bn) Leakage Current VID Recognized as a LOW Signal Min IOH = −3 mA (An, Bn) V Breakdown (I/O) ICEX Conditions Recognized as a HIGH Signal IOH = −1 mA (An) Breakdown Test IBVIT VCC V −0.6 Input LOW Current −1.2 IOL = 64 mA (B n) (OEAB, OEBA, LEAB, LEBA, CEAB, CEBA) IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V (OEAB, OEBA) VIN = 0.5V (CEAB, CEBA) IIH + IOZH Output Leakage Current 70 µA Max VOUT = 2.7V (An, Bn) IIL + IOZL Output Leakage Current −650 µA Max VOUT = 0.5V (An, Bn) IOS Output Short-Circuit Current mA Max 500 µA 0.0V VOUT = 5.25V (An, B n) −60 −150 −100 −225 VOUT = 0V (An) VOUT = 0V (Bn) IZZ Bus Drainage Test ICCH Power Supply Current 67 100 mA Max VO = HIGH ICCL Power Supply Current 83 125 mA Max VO = LOW ICCZ Power Supply Current 83 125 mA Max VO = HIGH Z 3 www.fairchildsemi.com 74F543 Absolute Maximum Ratings(Note 1) 74F543 AC Electrical Characteristics TA = +25°C Symbol Parameter VCC = +5.0V TA = 0°C to +70°C CL = 50 pF CL = 50 pF Min Typ Max Min tPLH Propagation Delay 3.0 5.5 7.5 3.0 8.5 tPHL Transparent Mode 3.0 5.0 6.5 3.0 7.5 12.5 Units Max ns An to Bn or Bn to An tPLH Propagation Delay 4.5 8.5 11.0 4.5 tPHL LEBA to An 4.5 8.5 11.0 4.5 12.5 tPLH Propagation Delay 4.5 8.5 11.0 4.5 12.5 4.5 8.5 11.0 4.5 12.5 tPHL LEAB to Bn tPZH Output Enable Time tPZL OEBA or OEAB to An or Bn 3.0 7.0 9.0 3.0 10.0 CEBA or CEAB to An or Bn 4.0 7.5 10.5 4.0 12.0 tPHZ Output Disable Time tPLZ OEBA or OEAB to An or Bn 1.0 6.0 8.0 1.0 9.0 CEBA or CEAB to An or Bn 2.5 5.5 10.5 2.5 11.5 ns ns ns AC Operating Requirements TA = +25°C Symbol VCC = +5.0V Parameter Min TA = 0°C to +70°C Max Min tS(H) Setup Time, HIGH or LOW 3.0 3.5 tS(L) An or Bn to LEBA or LEAB 3.0 3.5 tH(H) Hold Time, HIGH or LOW 3.0 3.5 tH(L) An or Bn to LEBA or LEAB 3.0 3.5 tW(L) Latch Enable, B to A or 8.0 9.0 B to A Pulse Width, LOW www.fairchildsemi.com 4 Units Max ns ns 74F543 Physical Dimensions inches (millimeters) unless otherwise noted 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M24B 24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide Package Number MSA24 5 www.fairchildsemi.com 74F543 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-011, 0.600 Wide Package Number N24A www.fairchildsemi.com 6 74F543 Octal Registered Transceiver Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N24C 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 7 www.fairchildsemi.com