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Details, datasheet, quote on part number:74F243
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| Part: | 74F243 |
| Category: | Logic => Bus Interface => Bus Oriented Circuits |
| Description: | Quad Bus Transceiver With Tri-state Outputs |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download 74F243 datasheet File size : 126 kB |
| Request For quote: | Find where to buy 74F243
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Datasheet text preview:
54F 74F243 Quad Bus Transceiver with TRI-STATE Outputs
November 1994
54F 74F243 Quad Bus Transceiver with TRI-STATE Outputs
General Description
The 'F243 is a quad bus transmitter receiver designed for 4-line asynchronous 2-way data communications between data busses
Y Y
eatures
2-Way asynchronous data bus communication Input clamp diodes limit high-speed termination effects Y Guaranteed 4000V minimum ESD protection F
Commercial
Military 54F243DM (Note 2)
Package Number J14A M14A
Package Description 14-Lead Ceramic Dual-In-Line 14-Lead (0 150 Wide) Molded Small Outline JEDEC 14-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C
74F243SC (Note 1) 54F243FM (Note 2) 54F243LM (Note 2)
Note 1 Devices also available in 13 reel Use Suffix e SCX L
W14B E20A
ote 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
ogic Symbol
IEEE IEC
Connection Diagrams
Pin Assignment for DIP SOIC and Flatpak Pin Assignment for LCC
TL F 9502 1 TL F 9502 2 TL F 9502 3
C TRI-STATE is a registered trademark of National Semiconductor Corporation
1995 National Semiconductor Corporation
TL F 9502
RRD-B30M105 Printed in U S A
Unit Loading Fan Out
54F 74F Pin Names Description UL HIGH LOW Input IIH IIL Output IOH IOL
E1 E2 An Bn
Enable Input (Active LOW) 1 0 1 67 20 mA b1 mA Enable Input (Active HIGH) 1 0 1 67 20 mA b1 mA Inputs 3 5 2 67 70 mA b1 6 mA Outputs 600 106 6(80) b12 mA 64 mA(48 mA)
Truth Table
Inputs E1 L L H H E2 L H L H Inputs Outputs An Input NA Z AeB Bn BeA NA Z Input
H e HIGH Voltage Level L e LOW Voltage Level Z e High Impedance N A e Not Allowed
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 Current Applied to Output in LOW State (Max) ESD Last Passing Voltage (Min)
ecommended Operating Conditions
Free Air Ambient Temperature Military Commercial Supply Voltage Military Commercial
b 55
C to a 150 C b 55 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 30 mA to a 5 0 mA
b 65
C to a 125 C 0 C to a 70 C
a 4 5V to a 5 5V a 4 5V to a 5 5V
b 0 5V to VCC b 0 5V to a 5 5V
twice the rated IOL (mA) 4000V
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 ote 2 Either voltage limit or current limit is sufficient to protect inputs R
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 74F 10% VCC 54F 74F 54F 74F 54F 74F 54F 74F 74F 74F 4 75 3 75
b1 0
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
e e e e e b 3 mA (An Bn) b 12 mA (An Bn) b 3 mA (An Bn) b 15 mA (An Bn) b 3 mA (An Bn)
24 20 24 20 27 0 55 0 55 20 0 50 100 70 10 05 250 50
V
Min
VOL IIH IBVI IBVIT ICEX VID IOD IIL IIH a IOZH IIL a IOZL IOS 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
V mA mA mA mA V mA mA mA mA mA mA mA mA
Min Max Max Max Max 00 00 Max Max Max Max Max Max Max
IOL e 48 mA (An Bn) IOL e 64 mA (An Bn) VIN e 2 7V VIN e 7 0V (E1 E2) VIN e 5 5V (An Bn) VOUT e VCC IID e 1 9 mA All Other Pins Grounded VIOD e 150 mV All Other Pins Grounded VIN e 0 5V (E1 E2) VOUT e 2 7V (An Bn) VOUT e 0 5V (An Bn) VOUT e 0V (An Bn) VO e HIGH VO e LOW VO e HIGH Z
Output Leakage Current Output Leakage Current Output Short-Circuit Current Power Supply Current Power Supply Current Power Supply Current 3
b 100
70
b1 6 b 225
64 64 71
80 90 90
AC Electrical Characteristics
74F Symbol Parameter Min tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay An to Bn Bn to An Output Enable Time E1 to Bn E2 to An Output Disable Time E1 to Bn E2 to An 25 25 20 20 20 20 TA e a 25 C VCC e a 5 0V CL e 50 pF Typ 40 40 43 58 45 45 Max 52 52 57 75 60 60 54F TA VCC e Mil CL e 50 pF Min 20 20 20 20 15 20 Max 65 85 80 10 5 75 85 74F TA VCC e Com CL e 50 pF Min 20 20 20 20 15 20 Max 62 65 67 85 70 70 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 D e Ceramic DIP F e Flatpak L e Leadless Chip Carrier (LCC) S e Small Outline SOIC JEDEC 243 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)
Physical Dimensions inches (millimeters)
20-Lead Ceramic Leadless Chip Carrier (L) NS Package Number E20A 4
Physical Dimensions inches (millimeters) (Continued)
14-Lead Ceramic Dual-In-Line Package (D) NS Package Number J14A
14-Lead (0 150 Wide) Molded Small Outline Package JEDEC (S) NS Package Number M14A
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