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TECHNICAL DATA
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KK74AC241
Octal 3-State Noninverting Buffer/Line Driver/Line Receiver
High-Speed Silicon-Gate CMOS
The KK74AC241 is identical in pinout to the LS/ALS241, HC/HCT241. The device inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LS/ALS outputs. This octal noninverting buffer/line driver/line receiver is designed to be used with 3-state memory address drivers, clock drivers, and other bus-oriented systems. The device has noninverting outputs and two output enables. Enable A is active-low and Enable B is active-high. • Outputs Directly Interface to CMOS, NMOS, and TTL • Operating Voltage Range: 2.0 to 6.0 V • Low Input Current: 1.0 µA; 0.1 µA @ 25°C • High Noise Immunity Characteristic of CMOS Devices • Outputs Source/Sink 24 mA
ORDERING INFORMATION KK74AC241N Plastic KK74AC241DW SOIC TA = -40° to 85° C for all packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs Enable A L PIN 20=VCC PIN 10 = GND L H A L H X Output YA L H Z Inputs Enable B H H L B L H X Output YB L H Z
X = don’t care Z = high impedance
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KK74AC241
MAXIMUM RATINGS*
Symbol VCC VIN VOUT IIN IOUT ICC PD Tstg TL
*
Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage (Referenced to GND) DC Output Voltage (Referenced to GND) DC Input Current, per Pin DC Output Sink/Source Current, per Pin DC Supply Current, VCC and GND Pins Power Dissipation in Still Air, Plastic DIP+ SOIC Package+ Storage Temperature Lead Temperature, 1 mm from Case for 10 Seconds (Plastic DIP or SOIC Package)
Value -0.5 to +7.0 -0.5 to VCC +0.5 -0.5 to VCC +0.5 ±20 ±50 ±50 750 500 -65 to +150 260
Unit V V V mA mA mA mW °C °C
Maximum Ratings are those values beyond which damage to the device may occur. Functional operation should be restricted to the Recommended Operating Conditions. +Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C SOIC Package: : - 7 mW/°C from 65° to 125°C
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VIN, VOUT TJ TA IOH IOL tr, tf Parameter DC Supply Voltage (Referenced to GND) DC Input Voltage, Output Voltage (Referenced to GND) Junction Temperature (PDIP) Operating Temperature, All Package Types Output Current - High Output Current - Low Input Rise and Fall Time (except Schmitt Inputs)
*
Min 2.0 0 -40
Max 6.0 VCC 140 +85 -24 24
Unit V V °C °C mA mA ns/V
VCC =3.0 V VCC =4.5 V VCC =5.5 V
0 0 0
150 40 25
*
VIN from 30% to 70% VCC
This device contains protection circuitry to guard against damage due to high static voltages or electric fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range GND≤(VIN or VOUT)≤VCC. Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC). Unused outputs must be left open.
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KK74AC241
DC ELECTRICAL CHARACT.