Revised March 1999 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 Package Number M24B Package Description 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F543MSA MSA24 24-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 74F543SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 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 © 1999 Fairchild Semiconductor Corporation DS009554.prf 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 Description OEAB A-to-B Output Enable Input (Active LOW) 1.0/1.0 20 µA/−0.6 mA 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) A0–A7 A-to-B Data Inputs or B-to-A 3-STATE Outputs B0–B7 1.0/1.0 20 µA/−0.6 mA 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 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 CEAB LEAB OEAB Latch Status Output 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 twice the rated IOL (mA) in LOW State (Max) 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 VCC V Recognized as a LOW Signal Min IIN = −18 mA IOH = −1 mA (An) IOH = −3 mA (An, Bn) V Min IOH = −1 mA (An) IOH = −3 mA (An, Bn) IOH = −15 mA (Bn) Output LOW 10% VCC 0.5 Voltage 10% VCC 0.55 V Min IOL = 24 mA (A n) VIN = 2.7V IOL = 64 mA (B n) Input HIGH Current 5.0 µA Max Input HIGH Current 7.0 µA Max Breakdown Test IBVIT Conditions Recognized as a HIGH Signal (OEAB, OEBA, LEAB, LEBA, CEAB, CEBA) Input HIGH Current 0.5 mA Max VIN = 5.5V (An, Bn) 50 µA Max VOUT = VCC V 0.0 IID = 1.9 µA 3.75 µA 0.0 VIOD = 150 mV −0.6 mA Max Breakdown (I/O) ICEX Output HIGH Leakage Current VID Input Leakage 4.75 Test IOD Output Leakage IIL Input LOW Current All Other Pins Grounded Circuit Current All Other Pins Grounded −1.2 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 −60 −150 mA Max VOUT = 0V (An) −100 −225 500 µA 0.0V VOUT = 5.25V (An, B n) 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 Units Min Typ Max Min Max 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 ns ns An to Bn or Bn to An tPLH Propagation Delay 4.5 8.5 11.0 4.5 12.5 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 tPHL LEAB to Bn 4.5 8.5 11.0 4.5 12.5 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 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-010, 0.600 Wide Package Number N24A www.fairchildsemi.com 6 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide Package Number N24C 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 1. Life support devices or systems are devices or systems device or system whose failure to perform can be reawhich, (a) are intended for surgical implant into the sonably expected to cause the failure of the life support body, or (b) support or sustain life, and (c) whose failure device or system, or to affect its safety or effectiveness. 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 www.fairchildsemi.com user. 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. 74F543 Octal Registered Transceiver Physical Dimensions inches (millimeters) unless otherwise noted (Continued)