LH5749J

The LH5749J is a kind of high-performance 64K, UV erasable, electrically programmable read-only-memory, organized as 8,192*8 bits. It is manufactured using advanced CMOS technology which allows it to operate at Bipolar speeds while comsuming only 75 mA. The device is available in 24-pin CERDIP which is pin-compatible to bipolar PROM.

There are some features of LH5749J as follows: (1)8,192*8 bit organization; (2)access time: 55/70 ns max; (3)low power consumption: 394 mW max; (4)single +5 V power supply; (5)fully static operation; (6)TTL compatible I/O; (7)three-state outputs; (8)high speed programming: SHARP original programming algorithm (32 second programming); (9)pin compatible with bipolar PROM; (10)JEDEC standard pinout (CERDIP).

What comes next is the absolute maximum ratings of LH5749J: (1)supply voltage, VCC: -0.6 to +7.0 V; (2)supply voltage, CS/VPP: -0.6 to +14.0 V; (3)supply voltage, VIN, VOUT: -0.6 to +7.0 V; (4)operating temperature, Topr: 0 to +70; (5)storage temperature, Tstg: -65 to +150 for ceramic package and -55 to +150 for plastic package. Then is about the recommended operating conditions (TA=0 to +70): (1)supply voltage, VCC: 4.75 V min, 5.0 V typ and 5.25 V max; (2)input low voltage, VIL: -0.1 V min and 0.8 V max; (3)input high voltage, VIH: 2.0 V min and VCC+0.8 V max.

The following is the DC characteristics of LH5749J (VCC=5 V±5%, TA=0 to +70): (1)input leakage current, ILI: -10A min and 10A max at VIN=GND or VCC; (2)output leakage current, ILO: -10A min and 10A max at VOUT=GND or VCC; (3)VCC operating current, ICC: 75 mA max at CMOS input and 75 mA at TTL input; (4)input low voltage, VIL: -0.1 V min and 0.8 V max; (5)input high voltage, VIH: 2.0 V min and VCC+0.3 V max; (6)output low voltage, VOL: 0.45 V max at IOL=15 mA; (7)output high voltage, VOH: 2.4 V min at IOH=-4 mA.