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Details, datasheet, quote on part number:JM38510/34803SRA
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Datasheet text preview:
54F 74F245 Octal Bidirectional Transceiver with TRI-STATE Outputs
June 1995
54F 74F245 Octal Bidirectional Transceiver with TRI-STATE Outputs
General Description
The 'F245 contains eight non-inverting bidirectional buffers with TRI-STATE outputs and is intended for bus-oriented applications Current sinking capability is 24 mA (20 mA Mil) at the A ports and 64 mA (48 mA Mil) 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
Y Y Y Y Y
eatures
Non-inverting buffers Bidirectional data path A outputs sink 24 mA (20 mA Mil) B outputs sink 64 mA (48 mA Mil) Guaranteed 4000V minimum ESD protection
F
Commercial 74F245PC
Military
Package Number N20A
Package Description 20-Lead (0 300 Wide) Molded Dual-In-Line 20-Lead Ceramic Dual-In-Line 20-Lead (0 300 Wide) Molded Small Outline JEDEC 20-Lead (0 300 Wide) Molded Small Outline EIAJ 20-Lead Molded Shrink Small Outline EIAJ Type II 20-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C
54F245DM (Note 2) 74F245SC (Note 1) 74F245SJ (Note 1) 74F245MSA (Note 1) 54F245FM (Note 2) 54F245LM (Note 2)
J20A M20B M20D MSA20 W20A E20A
Note 1 Devices also available in 13 reel Use suffix e SCX SJX and MSAX L ote 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
ogic Symbols
IEEE IEC
TL F 9503 3
TL F 9503 4
C TRI-STATE is a registered trademark of National Semiconductor Corporation
1995 National Semiconductor Corporation
TL F 9503
RRD-B30M75 Printed in U S A
Connection Diagrams
Pin Assignment for DIP SOIC SSOP and Flatpak Pin Assignment for LCC
TL F 9503 1
TL F 9503 2
Unit Loading Fan Out
54F 74F Pin Names Description UL HIGH LOW 10 20 10 20 3 5 1 083 150 40(38 3) 3 5 1 083 600 106 6(80) Input IIH IIL Output IOH IOL 20 mA b1 2 mA 20 mA b1 2 mA 70 mA b0 65 mA b 3 mA 24 mA (20 mA) 70 mA b0 65 mA b 12 mA 64 mA (48 mA)
OE TR A 0 A7 B 0 B7
Output Enable Input (Active LOW) Transmit Receive Input Side A Inputs or TRI-STATE Outputs Side B Inputs or TRI-STATE Outputs
Truth Table
Inputs OE L L H
H e HIGH Voltage Level L e LOW Voltage Level X e Immaterial
Output TR L H X Bus B Data to Bus A Bus A Data to Bus B High Z State
2
Absolute Maximum Ratings (Note 1)
p If Military Aerospace specified devices are required lease contact the National Semiconductor Sales S Office Distributors for availability and specifications torage Temperature Ambient Temperature under Bias Junction Temperature under Bias Plastic VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to Output in HIGH State (with VCC e 0V) Standard Output TRI-STATE Output
b 55
Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min)
twice the rated IOL (mA) 4000V
C to a 150 C C to a 125 C b 55 C to a 175 C b 55 C to a 150 C
b 0 5V to a 7 0V b 0 5V to a 7 0V
b 65
Note 1 Absolute maximum ratings are values beyond which the device may be damaged or have its useful life impaired Functional operation under N these conditions is not implied Rte 2 Either voltage limit or current limit is sufficient to protect inputs o
ecommended Operating Conditions
Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial
b 55
b 30 mA to a 5 0 mA
C to a 125 C 0 C to a 70 C
b 0 5V to VCC b 0 5V to a 5 5V
a 4 5V to a 5 5V a 4 5V to a 5 5V
DC Electrical Characteristics
Symbol VIH VIL VCD VOH Parameter Min Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 74F 5% VCC 54F 10% VCC 54F 10% VCC 74F 10% VCC 74F 10% VCC 54F 74F 24 20 24 20 27 05 0 55 05 0 55 20 0 50 100 70 10 05 250 50 4 75 3 75
b1 2
54F 74F Typ Max
Units V 08
b1 2
VCC
Conditions Recognized as a HIGH Signal Recognized as a LOW Signal
20
V V Min
IIN e b18 mA IOH IOH IOH IOH IOH IOL IOL IOL IOL
e e e e e e e e e b 3 mA (An) b 12 mA (Bn) b 3 mA (An) b 15 mA (Bn) b 3 mA (An)
V
Min
VOL
Output LOW Voltage
V
Min
20 mA (An) 48 mA (Bn) 24 mA (An) 64 mA (Bn)
IIH IBVI IBVIT ICEX VID IOD IIL IIH a IOZH IIL a IOZL
Input HIGH Current
mA mA mA mA V mA mA mA mA
Max Max Max Max 00 00 Max Max Max
VIN e 2 7V VIN e 7 0V (OE T R) VIN e 5 5 V (An Bn) VOUT e VCC (An Bn) IID e 1 9 mA All Other Pins Grounded VIOD e 150 mV All Other Pins Grounded VIN e 0 5V (T R OE) VOUT e 2 7V (An Bn) VOUT e 0 5V (An Bn)
Input HIGH Current 54F Breakdown Test 74F Input HIGH Current 54F Breakdown (I O) 74F Output HIGH Leakage Current Input Leakage Test Output Leakage Circuit Current Input LOW Current Output Leakage Current Output Leakage Current 54F 74F 74F 74F
70
b 650
3
DC Electrical Characteristics
Symbol IOS IZZ ICCH ICCL ICCZ Parameter
(Continued) 54F 74F Min Typ Max
b 150 b 225
Units
VCC
Conditions VOUT e 0V (An) VOUT e 0V (Bn) VOUT e 5 25V(An Bn) VO e HIGH VO e LOW VO e HIGH Z
Output Short-Circuit Current Bus Drainage Test Power Supply Current Power Supply Current Power Supply Current
b 60 b 100
mA mA mA mA mA
Max 0 0V Max Max Max
500 70 95 85 90 120 110
AC Electrical Characteristics
74F Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay An to Bn or Bn to An Output Enable Time Output Disable Time 25 25 30 35 20 20 TA e a 25 C VCC e a 5 0V CL e 50 pF Typ 42 42 53 60 50 50 Max 60 60 70 80 65 65 54F TA VCC e Mil CL e 50 pF Min 20 20 25 30 20 20 Max 75 75 90 10 0 90 10 0 74F TA VCC e Com CL e 50 pF Min 20 20 25 30 20 20 Max 70 70 80 90 75 75 ns Units
ns
Ordering Information
The device number is used to form part of a simplified purchasing code where the package type and temperature range are defined as follows 7 4F Temperature Range Family 74F e Commercial 54F e Military Device Type Package Code P e Plastic DIP D e Ceramic DIP F e Flatpak L e Leadless Chip Carrier (LCC) S e Small Outline SOIC JEDEC MSA e Shrink Small Outline Package (EIAJ SSOP) SJ e Small Outline Package SOIC EIAJ 245 S C X Special Variations QB e Military grade device with environmental and burn-in processing X e Devices shipped in 13 reel Temperature Range C e Commercial (0 C to a 70 C) M e Military (b55 C to a 125 C) NOTE NOT REQUIRED FOR MSA PACKAGE CODE
4
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L) NS Package Number E20A
20-Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A 5
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