View 74F245MSA_89807.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

74F245 Octal Bidirectional Transceiver with 3-STATE Outputs
April 1988 Revised April 1999
74F245 Octal Bidirectional Transceiver with 3-STATE Outputs
General Description
The 74F245 contains eight non-inverting bidirectional buffers with 3-STATE outputs and is intended for bus-oriented applications. Current sinking capability is 24 mA at the A Ports and 64 mA at the B Ports. The Transmit/Receive (T/R) input determines the direction of data flow through the bidirectional transceiver. Transmit (active HIGH) enables data from A Ports to B Ports; Receive (active LOW) enables data from B Ports to A Ports. The Output Enable input, when HIGH, disables both A and B Ports by placing them in a High Z condition.
Features
s Non-inverting buffers s Bidirectional data path s A outputs sink 24 mA s B outputs sink 64 mA
Ordering Code:
Order Number 74F245SC 74F245SJ 74F245MSA 74F245MTC 74F245PC Package Number M20B M20D MSA20 MTC20 N20A Package Description 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 20-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
(c) 1999 Fairchild Semiconductor Corporation
DS009503.prf
www.fairchildsemi.com
74F245
Unit Loading/Fan Out
U.L. Pin Names OE T/R A0-A7 Description HIGH/LOW Output Enable Input (Active LOW) Transmit/Receive Input Side A Inputs or 3-STATE Outputs B0-B7 Side B Inputs or 3-STATE Outputs 1.0/2.0 1.0/2.0 3.5/1.083 150/40(38.3) 3.5/1.083 Input IIH/IIL Output IOH/IOL 20 A/-1.2 mA 20 A/-1.2 mA 70 A/-0.65 mA -3 mA/24 mA (20 mA) 70 A/-0.65 mA
600/106.6(80) -12 mA/64 mA (48 mA)
Truth Table
Inputs Output OE L L H
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial
T/R L H X Bus B Data to Bus A Bus A Data to Bus B High Z State
www.fairchildsemi.com
2
74F245
Absolute Maximum Ratings(Note 1)
Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC = 0V) Standard Output 3-STATE Output Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min) twice the rated IOL (mA) 4000V -0.5V to VCC -0.5V to +5.5V -65C to +150C -55C to +125C -55C to +150C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA
Recommended Operating Conditions
Free Air Ambient Temperature Supply Voltage 0C to +70C +4.5V 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.
DC Electrical Characteristics
Symbol VIH VIL VCD VOH Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 10% VCC 10% VCC 5% VCC VOL IIH IBVI IBVIT ICEX VID IOD IIL IIH + IOZH IIL + IOZL IOS IZZ ICCH ICCL ICCZ Output LOW Voltage Input HIGH Current Input HIGH Current Breakdown Test Input HIGH Current Breakdown (I/O) Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Leakage Current Output Leakage Current Output Short-Circuit Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current 70 95 85 -60 -100 -1.2 70 -650 -150 -225 500 90 120 110 A mA mA mA 0.0V Max Max Max mA A A mA Max Max Max Max 3.75 A 0.0 4.75 10% VCC 10% VCC 2.4 2.0 2.7 0.5 0.55 5.0 7.0 0.5 50 A A mA A V Max Max Max Max 0.0 V Min Min 2.0 0.8 -1.2 Typ Max Units V V V V Min Min VCC Conditions Recognized as a HIGH Signal Recognized as a LOW Signal IIN = -18 mA IOH = -3 mA (An) IOH = -15 mA (Bn) IOH = -3 mA (An) IOL = 24 mA (An) IOL = 64 mA (Bn) VIN = 2.7V VIN = 7.0V (OE, T/R) VIN = 5.5 V (An, Bn) VOUT = VCC (An, Bn) IID = 1.9 A All Other Pins Grounded VIOD = 150 mV All Other Pins Grounded VIN = 0.5V (T/R, OE) VOUT = 2.7V (An, Bn) VOUT = 0.5V (An, Bn) VOUT = 0V (An) VOUT = 0V (Bn) VOUT = 5.25V(An, Bn) VO = HIGH VO = LOW VO = HIGH Z
3
www.fairchildsemi.com
74F245
AC Electrical Characteristics
TA = +25C Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Output Disable Time Propagation Delay An to Bn or Bn to An Output Enable Time 2.5 2.5 3.0 3.5 2.0 2.0 VCC = +5.0V CL = 50 pF Typ 4.2 4.2 5.3 6.0 5.0 5.0 Max 6.0 6.0 7.0 8.0 6.5 6.5 Min 2.0 2.0 2.5 3.0 2.0 2.0 Max 7.5 7.5 9.0 10.0 9.0 10.0 Min 2.0 2.0 2.5 3.0 2.0 2.0 Max 7.0 7.0 8.0 9.0 7.5 7.5 ns ns TA = - 55C to +125C CL = 50 pF TA = 0C to +70C CL = 50 pF Units
www.fairchildsemi.com
4
74F245
Physical Dimensions inches (millimeters) unless otherwise noted
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide Package Number M20B
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D
5
www.fairchildsemi.com
74F245
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Shrink Small Outline Package (SSOP), EIAJ TYPE II, 5.3mm Wide Package Number MSA20
www.fairchildsemi.com
6
74F245
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide Package Number MTC20
7
www.fairchildsemi.com
74F245 Octal Bidirectional Transceiver with 3-STATE Outputs
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Package Number N20A
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.

▲Up To Search▲

Price & Availability of 74F245MSA

	To Download 74F245MSA Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .