1 - Al Kossow's Bitsavers

TMS2732A32,768·BITERASABLE PROGRAMMABLE READ·ONLY MEMORY,electrical characteristics over full ranges of recommended operating conditionsPARAMETER TEST CONDITIONS MIN Typt MAX UNITVOH High-level output voltage 10H= -400 p.A 2.4 VVOL Low-level output voltage IOL=2.1 rnA 0.45 VII Input current (leakage) VI=O V to 5.25 V ±10 p.A10 Output current (leakage) VO=O.4 V to 5.25 V ±10 p.AICC1 VCC supply current (standby) E at VIH, G at VIL 20 30 rnAICC2 VCC supply current (active) E and G at VIL 70 125 rnAtTypical values are at T A = 25°C and nominal voltages.capacitance over recommended supply voltage range and operating free-air temperature range, f1 MHzCiPARAMETER TEST CONDITIONS MIN Typt UNITI All except G/Vpp 4 6Input capacitance I IT VI = 0 V pF/Vpp 20Co Output capacitance Vo = 0 V 12 pFtTypical values are at TA=25°C and nominal voltage.switching characteristics over recommended supply voltage range and operating free-air temperature rangem.":Do3:talA)talE)ten(Gltdis(E):j:tdis(G)+tv(A)PARAMETERAccess time from addressAccess time from EOutput enable time from GOutput disable time from EOutput disable time from GOutput data valid time afterchange of address, E, or G,TEST CONDITIONS(See Note 3)CL=100pF,1 Series 74 TTL Load,t r $20 ns,tf$20 ns,See Figure 1whichever occurs firstcCD< NOTE 3. Timing measurement reference levels: inputs 0.8 V and 2 VC:;" outputs 0.8 V and 2 V.~ tValue calculated from 0.5 V delta to measured output level.recommended conditions for programming, T A = 25°CTMS2732A-30 TMS2732A-35 TMS2732A-45UNITMIN MAX MIN MAX MIN MAX300350 450 ns300350 450 ns150150 150 ns100100 100 ns100100 100 ns00 0 nsVCCVppVIHVILtw(~tsu(A)tsu(D)tsu(VPP)th(A)th(D)th(VPP)trec(PG)tEHDPARAMETERSupply voltageSupply voltageHigh-level input voltageLow-level input voltageE pulse durationAddress setup timeData setup timeVpp setup timeAddress hold timeData hold timeVPP hold timeVPP recovery timeDelay time, data valid after E lowMIN TYP MAX UNIT4.75 5 5.25 V20.5 21 21.5 V2 VCC+1 V-0.1 0.8 V9 55 ms2 p'S2 p'S2 P.s0 p'S2 p'S2 P.s2 P.s1 P.s6-50TEXASINSTRUMENTSPOST OFFICE BOX 225012 • DALLAS. TEXAS 7526511