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PDF 74F381SC Data sheet ( Hoja de datos )
| Número de pieza | 74F381SC | |
| Descripción | 4-Bit Arithmetic Logic Unit | |
| Fabricantes | Fairchild | |
| Logotipo |  |
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May 1988
Revised August 1999
74F381
4-Bit Arithmetic Logic Unit
General Description
The 74F381 performs three arithmetic and three logic oper-
ations on two 4-bit words, A and B. Two additional select
input codes force the function outputs LOW or HIGH. Carry
propagate and generate outputs are provided for use with
the 74F182 carry lookahead generator for high-speed
expansion to longer word lengths. For ripple expansion,
refer to the 74F382 ALU data sheet.
Features
s Low input loading minimizes drive requirements
s Performs six arithmetic and logic functions
s Selectable LOW (clear) and HIGH (preset) functions
s Carry generate and propagate outputs for use with carry
lookahead generator
Ordering Code:
Order Number Package Number
Package Description
74F381SC
M20B
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
74F381SJ
M20D
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74F381PC
N20A
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
© 1999 Fairchild Semiconductor Corporation DS009528
www.fairchildsemi.com
1 page  
Absolute Maximum Ratings(Note 1)
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
Input Voltage (Note 2)
−0.5V to +7.0V
−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
3-STATE Output
−0.5V to VCC
−0.5V to +5.5V
Current Applied to Output
in LOW State (Max)
twice the rated IOL (mA)
Recommended Operating
Conditions
Free Air Ambient Temperature
Supply Voltage
0°C to +70°C
+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
Parameter
Min
Typ
Max
Units
VCC
Conditions
VIH
VIL
VCD
VOH
VOL
IIH
IBVI
ICEX
VID
IOD
IIL
IOS
ICC
Input HIGH Voltage
Input LOW Voltage
Input Clamp Diode Voltage
Output HIGH
Voltage
Output LOW
Voltage
Input HIGH
Current
Input HIGH Current
Breakdown Test
Output HIGH
Leakage Current
Input Leakage
Test
Output Leakage
Circuit Current
Input LOW Current
10% VCC
5% VCC
10% VCC
2.0
2.5
2.7
4.75
Output Short-Circuit Current
Power Supply Current
−60
V Recognized as a HIGH Signal
0.8 V
Recognized as a LOW Signal
−1.2 V Min IIN = −18 mA
V Min IOH = −1 mA
IOH = −1 mA
0.5 V Min IOL = 20 mA
5.0 µA
VIN = 2.7V
7.0 µA Max VIN = 7.0V
50 µA Max VOUT = VCC
V 0.0 IID = 1.9 µA
All Other Pins Grounded
3.75
µA
0.0 VIOD = 150 mV
All Other Pins Grounded
−0.6 mA Max VIN = 0.5V (Sn)
−1.8 mA Max VIN = 0.5V (An, Bn)
−2.4 mA Max VIN = 0.5V (Cn)
−150 mA Max VOUT = 0V
59 89 mA Max
5 www.fairchildsemi.com
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| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet 74F381SC.PDF ] | |
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