Revised August 1999 74FR16245 16-Bit Transceiver with 3-STATE Outputs General Description Features The 74FR16245 contains sixteen non-inverting bidirectional buffers with 3-STATE outputs and is intended for busoriented applications. Current sinking capability is 64 mA on both the A and B Ports. The device is byte controlled. Each byte has separate control inputs which can be shorted together for full 16-bit operation. The transmit/ receive (T/Rn) inputs determine the direction of data flow through the transceiver. The output enable (OEn) inputs disable both A and B Ports by placing them in an high impedance state. ■ Non-inverting buffers ■ Bidirectional data paths ■ A and B output sink capability of 64 mA, source capability of 15 mA ■ Separate control pins for each byte ■ Guaranteed pin-to-pin skew ■ Low 3-STATE IIL ■ 16-Bit version of the 74F245 or 74F645 Ordering Code: Order Number Package Number 74FR16245QC V44A 74FR16245SSC 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 DS010614 www.fairchildsemi.com 74FR16245 16-Bit Transceiver with 3-STATE Outputs October 1989 74FR16245 Pin Descriptions Pin Names Description OEn Output Enable Input T/Rn Transmit/Receive Input A0–A15 A Bus Inputs/3-STATE Outputs B0–B15 B Bus Inputs/3-STATE Outputs Truth Table Inputs Byte1 (0:7) Output Operating Mode Byte2 (8:15) OE1 T/R1 OE2 T/R2 Byte1 (0:7) Byte2 (8:15) L L H X Bus B Data to A High Z State L H H X Bus A Data to B High Z State H X L L High Z State Bus B Data to A H X L H High Z State Bus A Data to B L L L L Bus B Data to A Bus B Data to A L H L H Bus A Data to B Bus A Data to B H X H X High Z State High Z State H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram 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 VCC Pin Potential to Ground Pin 0°C to +70°C +4.5V to +5.5V −0.5V to +7.0V 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 VIH Input HIGH Voltage VIL Input LOW Voltage VCD Input Clamp Min Typ Max 2.0 VCC V Diode Voltage VOH Units Output HIGH 2.4 2.8 Voltage 2.0 2.44 Conditions Recognized as a HIGH Signal 0.8 V −1.2 V Min Recognized as a LOW Signal V Min IIN = −18 mA IOH = − 3 mA IOH = − 15 mA (An, Bn) VOL Output LOW 0.45 Voltage IIH Input HIGH Current IBVI Input HIGH Current Break-Down Test IBVIT Input HIGH Current IOS µA Max 7.0 µA Max VIN = 2.7V VIN = 7.0V (OEn, T/Rn) VIN = 5.5V Input LOW −150 µA Max VIN = 0.5V (T/Rn, An, B n) Current −100 µA Max VIN = 0.5V (OE n) −225 mA Max 0 25 µA Max −20 −150 µA Max 50 µA Max V 0.0 3.75 µA 0.0 100 µA 0.0 Output Short-Circuit Output Leakage IOZH Current IIL + Output Leakage IOZL Current ICEX Output HIGH Leakage −100 Current Input Leakage Test 4.75 Output Circuit Leakage Current IZZ 5.0 IOL = 64 mA (An, Bn) Max IIH + IOD Min mA Current VID V 0.1 Breakdown Test (I/O) IIL 0.55 Bus Drainage Test (An, Bn) VOUT = 0V (An, Bn) VOUT = 2.7V (An, Bn) VOUT = 0.5V (An, Bn) VOUT = VCC (An, Bn) IID = 1.9 µA All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VOUT = 5.25V (An, Bn) ICCH Power Supply Current 70 105 mA Max VO = HIGH ICCL Power Supply Current 127 165 mA Max VO = LOW ICCZ Power Supply Current 71 105 mA Max VO = HIGH Z CIN Input Capacitance 8.0 pF 5.0 OE, T/R 17.0 pF 5.0 An, Bn 3 www.fairchildsemi.com 74FR16245 Absolute Maximum Ratings(Note 1) 74FR16245 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 1.3 2.7 4.3 1.3 4.3 tPHL An to Bn or Bn to An 1.3 2.2 4.3 1.3 4.3 tPZH Output Enable Time 3.9 6.9 13.9 3.9 13.9 3.9 9.7 13.9 3.9 13.9 1.8 3.9 6.3 1.8 6.3 1.8 4.4 6.3 1.8 6.3 tPZL tPHZ Output Disable Time tPLZ Unit 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 Unit 16 Outputs Switching (Note 4) (Note 5) Min Max Min Max tPLH Propagation Delay 1.3 5.8 3.2 8.2 tPHL An to Bn or Bn to An 1.3 5.8 3.2 8.2 tPZH Output Enable Time 3.9 14.6 3.9 14.6 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 6.3 1.8 6.3 ns ns ns 1.2 ns 2.2 ns 2.5 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 74FR16245 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 74FR16245 16-Bit Transceiver 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