1 - Al Kossow's Bitsavers

TMS4712816,384-WORD BY 8-BIT READ-ONLY MEMORYabsolute maximum ratingsSupply voltage to ground potential (see Note 1) .................................. -0.5 V to 7 VApplied output voltage (see Note 1) ............................................. - 1 V to 7 VApplied input voltage (see Note 1) .............................................. - 1 V to 7 VPower dissipation .............................................................. 500 mWOperating free-air temperature ................................................. DoC to 70°CStorage temperature ..................................................... - 55°C to 150°CNOTE 1:Voltage values are with respect to Vss.recommended operating conditionsPARAMETER MIN NOM MAX UNITSupply voltage, Vee 4.5 5 5.5 VHigh-level input voltage, VIH 2 Vee VLow-level input voltage, VIL -1 0.8 VOperating free-air temperature, T A 0 70 °eelectrical characteristics, T A o °e to 70 o e, VOO 5 V ± 10% (unless otherwise noted)PARAMETER TEST CONDITIONS MIN MAX UNITVOH High·level output voltage Vee = 4.5 V, 10H = -1 mA 2.4 VVOL Low-level output voltage Vee = 4.5 V, IOL = 2.1 mA 0.4 VII Input current Vee = 5.5 V, Ov ~ VIN ~ 5.5 V 10 p.A10 Output leakage current Vo = 0.4 V to Vee, ehip deselected ±10 p.Alee1 Supply current from Vee (active) Vee = 5.5 V, VI = Vee Output not loaded 60 mAlee2 Supply current from Vee (power down) Vee = 5.5 V 12 mAeieoInput capacitanceOutput capacitanceVo = 0 V,f = 1 MHzVo = 0 V,f = 1 MHzTA = 25°e,TA = 25°C,6 pF12 pFI/)Q)CJ'S;Q)C~aa:switching characteristics, T A ooe to 70 o e, Vee 5 V ± 10%, see figure 1 tPARAMETERTMS47128-25 TMS47128-35 TMS47128-45MIN MAX MIN MAX MIN MAXUNITta(AD) Access time from address 250 350 450ta(S) Access time from chip select 120 120 120ta(PD) Access time from power down/chip enable 250 350 450tv(A) Output data valid after address change 10 10 10 nstdis Output disable time from chip select/chip enable 100 100 100ten(S) Output enable time from chip select 10 10 10ten(E) Output enable time from chip enable 10 10 10t All AC measurements are made at 10% and 90% points.34TEXASINsrRUMENTSPOST OFFICE BOX 225012 • DALLAS. TEXAS 752657-31