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Part: 54FCT240FMQB
Category:
Description: Octal Buffer/line Driver With Tri-state Outputs
Company: National Semiconductor Corporation
Datasheet: Download 54FCT240FMQB datasheet File size : 180 kB
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Datasheet text preview:
54FCT240 Octal Buffer/Line Driver with TRI-STATE Outputs
August 1998
54FCT240 Octal Buffer/Line Driver with TRI-STATE ® Outputs
General Description
The 54FCT240 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus oriented transmitter or receiver which provides improved PC board density.
Features
n Inverting TRI-STATE outputs drive bus lines or buffer memory address registers n Output sink capability of 32 mA, source capability of 12 mA n TTL input and output compatible levels n CMOS power consumption n Standard Microcircuit Drawing (SMD) 5962-8765501
Ordering Code:
Military 54FCT240DMQB 54FCT240FMQB 54FCT240LMQB Package Number J20A W20A E20A 20-Lead Ceramic Dual-In-Line 20-Lead Cerpak 20-Lead Ceramic Leadless Chip Carrier, Type C Package Description
Logic Symbol
IEEE/IEC
Connection Diagrams
Pin Assignment for DIP and Flatpak
DS100955-2
DS100955-1
Pin Assignment for LCC
Pin Names OE1, OE2 I0 I7 O0 O7 Inputs Outputs
Description TRI-STATE Output Enable Inputs
DS100955-3
TRI-STATE ® is a registered trademark of National Semiconductor Corporation. FACT ® is a registered trademark of Fairchild Semiconductor Corporation.
© 1999 National Semiconductor Corporation
DS100955
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54FCT240
Connection Diagrams
(Continued) Inputs OE1 L L H Inputs OE2 L L H In L H X In L H X Outputs (Pins 12, 14, 16, 18) H L Z Outputs (Pins 3, 5, 7, 9) H L Z
H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial Z = High Impedance
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54FCT240
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias Ceramic VCC Pin Potential to Ground Pin Input Voltage (Note 1) Input Current (Note 1) Voltage Applied to Any Output in the Disabled or Power-off State -65°C to +150°C -55°C to +125°C -55°C to +175°C -0.5V to +7.0V -0.5V to +7.0V -30 mA to +5.0 mA
in the HIGH State Current Applied to Output in LOW State (Max)
-0.5V to VCC twice the rated IOL (mA)
Recommended Operating Conditions
Free Air Ambient Temperature Military Supply Voltage Military -55°C to +125°C +4.5V to +5.5V
Note 1: Absolute maximum ratings are those values beyond which damage to the device may occur. The databook specifications should be met, without exception, to ensure that the system design is reliable over its power supply, temperature, and output/input loading variables. National does not recommend operation of FACT ® circuits outside databook specifications.
-0.5V to 5.5V
DC Characteristics for 'FCT Family Devices
Symbol VIH VIL VCD VOH VOL IIH IIL IOZH IOZL IOS ICCQ ICC ICCT Parameter Input HIGH Voltage Input LOW Voltage Input Clamp Diode Voltage Output HIGH Voltage Output LOW Voltage 54FCT 54FCT 54FCT 54FCT 4.3 2.4 0.2 0.5 5 -5 10 -10 -60 1.5 2.0 4.8 FCT240 Min 2.0 0.8 -1.2 Max Units V V V V V V V µA µA µA µA mA mA mA mA Min Min Min Min Min Max Max Max Max Max Max Max Max VCC Conditions Recognized HIGH Signal Recognized LOW Signal IIN = -18 mA IOH = -300 µA IOH = -12 mA IOL = 300 µA IOL = 32 mA VIN = 5.5V VIN = 0.0V VIN = 5.5V VIN = 0.0V VOUT = 0.0V VIN = 0.2V or VIN = 5.3V VIN = 3.4V VIN = 3.4V or VIN = GND, OE = GND, fI = 10Mhz, outputs open, one bit toggling - 50% duty cycle VIN = 5.3V or VIN = 0.2V,OE = GND, fI = 10Mhz, outputs open, one bit toggling - 50% duty cycle Outputs Open, OE = GND, One Bit Toggling, 50% Duty Cycle
Input HIGH Current Input LOW Current High Impedance Output Current High Impedance Output Current Output Short-Circuit Current Power Supply Current Power Supply Current Total Power Supply Current
4.0 ICCD Dynamic ICC No Load
mA
Max
0.25 mA/MHz
Max
3
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54FCT240
AC Electrical Characteristics
Symbol Parameter 54FCT240 TA = -55°C to +125°C VCC = 4.5V 5.5V CL = 50 pF Min tPLH tPHL tPZH tPZL tPHZ tPLZ Propagation Delay Data to Outputs Output Enable Time Output Disable Time 1.5 1.5 1.5 1.5 1.5 1.5 Max 9.0 9.0 10.5 10.5 12.5 12.5 ns ns ns Units Fig. No.
Capacitance
Symbol CIN CPD Parameter Input Capacitance Power Dissipation Capacitance Max 10 12 Units pF pF Conditions VCC = OPEN VCC = 5.0V
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54FCT240
Physical Dimensions
inches (millimeters) unless otherwise noted
20 Terminal Ceramic Leadless Chip Carrier (L) NS Package Number E20A
20 Lead Ceramic Dual-In-Line Package (D) NS Package Number J20A
5 www.national.com
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