memory products - Al Kossow's Bitsavers

TS27C256QREAD OPERATIONDC CHARACTERISTICS (Tamb=TL to TH, Vcc=5V±10%, VSS=OV; Unless otherwise specified)(5)Symbol Parameter Test ConditionsMin.ValuesTyp.(1)Max.UnitILl Input Load Current VIN=VCC or GND 10 ~ILO Output Leakage Current VOUT=VCC or VSS,CE=VIH 10 ~Vpp Vpp Read Voltage VCC-0.7 VCC VVIL Input Low Voltage -0.1 0.8 VVIH Input High Voltage 2.0 VCc+1 VVOL Output Low Voltage IOL=2.1 mA 0.45 VIOL=O~ 0.1VOH Output High Voltage IOH= -400~ 2.4 VIOH=O p.AVcc-0.1ICC2 VCC Supply Active Current· CE=OE=VIL, Inputs=VIH or 10 30 mATTL LevelsVIL, f=5 MHz, 1/0=0 mAICCSB1 VCC Supply Standby Current VIH or VIL 0.05 1 mAICCSB2 VCC Supply Standby Current Vcc-0.1V or VSS+0.1V 1 10 ~IpP1 Vpp Read Current Vpp=Vcc=5.5V 10 ~Note: 1. Typical conditions are for oparation at: Tamb= + 25°C, VCC=5V, Vpp=VCC, and VSS=OVAC CHARACTERISTICS(1)(Tamb=TL to TH)(5)27C256 27C256 27C256 27C256 27C256Symbol Parameter Test Conditions -15 -17 -20 -25 -30 UnitMin Max Min Max Min Max Min Max Min MaxtACC Address to Output Delay CE=OE=VIL 150 170 200 250 300 nsteE CE to Output Delay OE=VIL 150 170 200 250 300 nstoE Output Enable to CE=VIL 75 75 75 100 120 nsOutput DelaytDF(2,4) OE or CE High to 0 50 0 50 0 55 0 60 0 75 nsoutput floattoH Output Hold from CE=OE=VIL 0 0 0 0 0 nsaddresses, CE or OEwhichever occured firstCAPACITANCE Tamb= + 25°C, f=1 MHz (Note 3)Symbol Parameter Conditions Min. Typ. Max. UnitCin Input Capacitance VIN=OV 4 6 pFCout Output Capacitance VOUT=OV 8 12 pFNotes:. 1. VCC must be applied at the same time or before Vpp and removed after or at the same time as VPP'Vpp may be connectedto VCC except during program.2. The tOF compare level is determined as follows:High to THREE-STATE, the measured V. OIi(OC) -0.1VLow to THREE·STATE the measured VOL(DC) +0.1V.3. CapaCitance is guaranteed B~erlodic testing. T a"/P = + 25°C, f = 1 MHz.4. T OF' is specified from OE or CE whichever occurs .rst. This parameter is only sampled and not 100% tested.5. All parameters are spacified at V cc = 5V ± 5% for 27C256-15X, 27C256-17X, 27C256-20X, 27C256-25X and 27C256-30X.3/9123