74FR16245 ROCHESTER | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 5

Technical content

Features

/uni25A0Non-inverting buffers /uni25A0Bidirectional data paths /uni25A0A and B output sink capability of 64 mA, source capability of 15 mA /uni25A0Separate control pins for each byte /uni25A0Guaranteed pin-to-pin skew /uni25A0Low 3-STATE IIL /uni25A016-Bit version of the 74F245 or 74F645 Ordering Code: 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 Order Number Package Number Package Description 74FR16245QC V44A 44-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.650 Square 74FR16245SSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide © 1999 Fairchild Semiconductor Corporation DS010614 www.fairchildsemi.com October 1989 Revised August 1999 74FR16245 16-Bit Transceiver with 3-STATE Outputs 74FR16245 16-Bit Transceiver with 3-STATE Outputs General Description The 74FR16245 contains sixteen non-inverting bidirec- tional buffers with 3-STATE outputs and is intended for bus- oriented 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/R n) inputs determine the direction of data flow through the transceiver. The output enable (OE n) inputs disable both A and B Ports by placing them in an high impedance state. /uni25A0Non-inverting buffers /uni25A0Bidirectional data paths /uni25A0A and B output sink capability of 64 mA, source capability of 15 mA /uni25A0Separate control pins for each byte /uni25A0Guaranteed pin-to-pin skew /uni25A0Low 3-STATE IIL /uni25A016-Bit version of the 74F245 or 74F645 Ordering Code: 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 Order Number Package Number Package Description 74FR16245QC V44A 44-Lead Plastic Lead Chip Carrier (PLCC), JEDEC MO-047, 0.650 Square 74FR16245SSC MS48A 48-Lead Small Shrink Outline Package (SSOP), JEDEC MO-118, 0.300 Wide Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein. * For complete Rochester ordering guide, please refer to page 2 *

Specification Number 74FR16245-CI(F) Rev A Page 2 of 5 Rochester Part Number OCM Part Number Package Temperature 74FR16245QC 74FR16245QC LDCC-44 0° to +70°C 74FR16245QCX 74FR16245QCX LDCC-44 0° to +70°C 74FR16245SSC 74FR16245SSC SSOP-48 0° to +70°C 74FR16245SSCX 74FR16245SSCX SSOP-48 0° to +70°C Rochester Ordering Guide

Specification Number 74FR16245-CI(F) Rev A Page 3 of 5 www.fairchildsemi.com 2 74FR16245 Pin Descriptions Truth Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Logic Diagram 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 Inputs Output Operating Mode Byte1 (0:7) 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

Specification Number 74FR16245-CI(F) Rev A Page 4 of 5 3 www.fairchildsemi.com 74FR16245 Absolute Maximum Ratings(Note 1) Recommended Operating Conditions 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. Storage Temperature −65°C to +150°C Ambient Temperature under Bias −55°C to +125°C Junction Temperature under Bias −55°C to +150°C VCC Pin Potential to Ground Pin −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 Current Applied to Output in LOW State (Max) Twice the Rated IOL (mA) ESD Last Passing Voltage (Min) 4000V Free Air Ambient Temperature 0°C to +70°C Supply Voltage +4.5V to +5.5V Symbol Parameter Min Typ Max Units VCC Conditions VIH Input HIGH Voltage 2.0 V Recognized as a HIGH Signal VIL Input LOW Voltage 0.8 V Recognized as a LOW Signal VCD Input Clamp −1.2 V Min I IN = −18 mA Diode Voltage VOH Output HIGH 2.4 2.8 IOH = − 3 mA Voltage 2.0 2.44 V Min I OH = − 15 mA (An, Bn) VOL Output LOW 0.45 0.55 V Min IOL = 64 mA Voltage (An, Bn) IIH Input HIGH Current 5.0 µA Max V IN = 2.7V IBVI Input HIGH Current 7.0 µA Max VIN = 7.0V Break-Down Test (OEn, T/Rn) IBVIT Input HIGH Current 0.1 mA Max VIN = 5.5V Breakdown Test (I/O) (An, Bn) IIL Input LOW −150 µA Max VIN = 0.5V (T/Rn, An, Bn) Current −100 µA Max VIN = 0.5V (OEn) IOS Output Short-Circuit −100 −225 mA Max VOUT = 0V Current (An, Bn) IIH + Output Leakage 0 25 µA Max VOUT = 2.7V IOZH Current (An, Bn) IIL + Output Leakage −20 −150 µA Max VOUT = 0.5V IOZL Current (An, Bn) ICEX Output HIGH Leakage 50 µA Max VOUT = VCC Current (An, Bn) VID Input Leakage 4.75 V 0.0 IID = 1.9 µA Test All Other Pins Grounded IOD Output Circuit 3.75 µA 0.0 VIOD = 150 mV Leakage Current All Other Pins Grounded IZZ Bus Drainage 100 µA 0.0 VOUT = 5.25V Test (An, Bn) ICCH Power Supply Current 70 105 mA Max V O = HIGH ICCL Power Supply Current 127 165 mA Max V O = LOW ICCZ Power Supply Current 71 105 mA Max V O = HIGH Z CIN Input Capacitance 8.0 pF 5.0 OE, T/R 17.0 pF 5.0 A n, Bn

Specification Number 74FR16245-CI(F) Rev A Page 5 of 5 www.fairchildsemi.com 4 74FR16245 Extended AC Characteristics Note 3: Skew is defined as the absolute value of the difference between the actual propagation delays for any two outputs of the same d evice. The specifi- cation applies to any outputs switching HIGH-to-LOW (t OSHL) LOW-to-HIGH (t OSLH), or HIGH-to-LOW and/or LOW-to-HIGH (t OST). Specifications guaran- teed 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 pha se, 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. Symbol Parameter TA = +25°CT A = 0°C to +70°C Unit VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 50 pF Min Typ Max Min Max ns ns ns Symbol Parameter TA = 0°C to +70°CT A = 0°C to +70°C Unit VCC = +5.0V VCC = +5.0V CL = 50 pF CL = 250 pF

16 Outputs Switching

(Note 4) (Note 5) Min Max Min Max tPLH Propagation Delay 1.3 5.8 3.2 8.2 ns tPHL An to Bn or Bn to An 1.3 5.8 3.2 8.2 tPZH Output Enable Time 3.9 14.6 ns tPZL 3.9 14.6 tPHZ Output Disable Time 1.8 6.3 ns tPLZ 1.8 6.3 tOSHL Pin-to-Pin Skew 1.2 ns (Note 3) for HL Transitions tOSLH Pin-to-Pin Skew 2.2 ns (Note 3) for LH Transitions tOST Pin-to-Pin Skew 2.5 ns (Note 3) for HL/LH Transitions Rochester Electronics guarantees performance of its semiconductor products to the original OEM specifications. “Typical” values are for reference purposes only. Certain minimum or maximum ratings may be based on product characterization, design, simulation, or sample testing. Rochester Electronics reserves the right to make changes without further notice to any specification herein.