National Semiconductor 742 Hoja de datos

No.	parte #	Fabricante	Descripción
1	74283	National Semiconductor	4-Bit Binary Adders Y Y Y Y Y Full-carry look-ahead across the four bits Systems achieve partial look-ahead performance with the economy of ripple carry Typical add times Two 8-bit words 25 ns Two 16-bit words 45 ns Typical power dissipation per 4-bit adder 95 mW Alt
2	LM2742	National Semiconductor	N-Channel FET Synchronous Buck Regulator Controller The LM2742 operates from a low-current 5V bias and can convert from a 1V to 16V power rail. The part utilizes a fixedfrequency, voltage-mode, PWM control architecture and the switching frequency is adjustable from 50kHz to 2MHz by setting the value
3	74260	National Semiconductor	Dual 5-Input NOR Gate values beyond which the safety of the device cannot be guaranteed The device should not be operated at these limits The parametric values defined in the ‘‘Electrical Characteristics’’ table are not guaranteed at the absolute maximum ratings The ‘‘Re
4	74273	National Semiconductor	8-Bit Register Y Y Y Y Edge-triggered 8-bit high speed register Parallel in and out Common clock and master reset Connection Diagram Dual-In-Line Package TL F 9825 – 1 Order Number DM54LS273E DM54LS273J DM54LS273W DM74LS273M or DM74LS273N See NS Package Number
5	DM7426	National Semiconductor	Quad 2-Input NAND Gates
6	DM74259	National Semiconductor	8-Bit Addressable Latches
7	DM74251	National Semiconductor	1 of 8 Line Data Selectors / Multiplexers
8	DM74253	National Semiconductor	Dual 1 to 4 Line Data Selectors / Multiplexers
9	74247	National Semiconductor	BCD to 7-Segment Decoder/Driver M115 Printed in U S A Absolute Maximum Ratings (Note) Supply Voltage 7V Input Voltage 7V Operating Free Air Temperature Range 0 C to a70 C Storage Temperature Range b65 C to a150 C Recommended Operating Conditions Symbol VCC VIH VIL IOH IO
10	PC87427	National Semiconductor	ServerI/O with SensorPathTM Health Monitoring a fast X-Bus, over which boot flash and I/O devices can be accessed. The PC87427 supports X-Bus address line forcing (to 0 or 1) to create memory windows for BIOS data storage. When VSB exists, the BMC or mBMC can access the PC87427 and its fast X-Bu
11	DM7420	National Semiconductor	Dual 4-Input NAND Gates Y Alternate Military Aerospace device (5420) is available Contact a National Semiconductor Sales Office Distributor for specifications Connection Diagram Dual-In-Line Package TL F 6506 – 1 Order Number 5420DMQB 5420FMQB DM5420J DM5420W or DM7420N
12	DM7427	National Semiconductor	DM7427 Triple 3-Input NOR Gates mmended Operating Conditions’’ table will define the conditions for actual device operation Recommended Operating Conditions Symbol VCC VIH VIL IOH IOL TA Parameter Min Supply Voltage High Level Input Voltage Low Level Input Voltage High Level Outpu
13	DM74279	National Semiconductor	Quad Set-Reset Latch Voltage 7V Input Voltage 5 5V Operating Free Air Temperature Range b 55 C to a 125 C 54 DM74 0 C to a 70 C b 65 C to a 150 C Storage Temperature Range Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety of the device cannot
14	DM74283	National Semiconductor	4-Bit Binary Full Adder (with Fast Carry) cifications Supply Voltage Input Voltage Operating Free Air Temperature Range 54 DM74 Storage Temperature Range 7V 5 5V b 55 C to a 125 C 0 C to a 70 C b 65 C to a 150 C Note The ‘‘Absolute Maximum Ratings’’ are those values beyond which the safety
15	DM7425	National Semiconductor	Dual 4-Input NOR Gate