82LHS191 PHILIPS

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Philips Components-Signetics 82LHS191 fecwne. [ose | 49-bit TTL bi 16K-bit TTL bipolar PROM [Date of tssue [November 10, 1988 Memory Products DESCRIPTION FEATURES PIN CONFIGURATIONS The 82LHS191 is field programmable, © Address access time: 35ns max meaning that custom patterns are or i 3QuWrbit N Package immediately available by following the ‘ower dissipation: 32W/bit typ Signetics Generic II fusing procedure. _® Input loading: ~2501A max ” = 5 Yeo The 82LHS191 is supplied with all fo “ outputs at a logical High. Outputs are * Three. Chip Enable Inputs asi fz] ae programmed to a logic Low level at any © On-chip address decoding (al fai] aro specified address by fusing the vertical « No separate fusing pins ai face function manix. © Unprogrammed outputs are High level af [i] cez This device includes on-chip decoding ge a» fa} cea and 3 Chip Enable inputs for ease of Fully TTL compatible no fa fa) os memory expansion. Itfeatures 3-State _ Outputs: 3-State of = outputs for optimization of word oid Fon expansion in bused organizations. oad Ejcs Ordering information can be foundon APPLICATIONS ; ono Foe the following page. # Prototyping/volume production The 82LHS191 devices are also ‘* Sequential controllers processed to military requirements for Microprogramming Package ‘operation over the miltary temperature ; : range. For specifications and ordering _® Hardwired algorithms AS 8 AT WE Voc 8 information consult the Signetics Military © Control store fel (31 (21 £1] Be} ff bs , Book. iy Ato Data 4 Random logic aid a * Code conversion | ba} cee BLOCK DIAGRAM ag Fz ces ao[s] f21) NC Mo ne fal fs} 0% \\ of lidjor wes | oesobeR EVERIO NGC) ! 02 03 GND NC 04 05 08 400 ao . [TTTItT a Or 02 02 08 05 OF OF O8 336

Philips Components-Signetics Memory Products. Product Specification: 16K-bit TTL bipolar PROM (2048 x 8) 82LHS191

ORDERING INFORMATION

24-pin Plastic Dual-in-Line 24-pin Plastic Dual-In-tine 28-pin Plastic Leaded Chip Carrier 450mil-square ABSOLUTE MAXIMUM RATINGS: [es | Serayctage [155 [veo _| DC ELECTRICAL CHARACTERISTICS O°C < Tame < +75°C, 4.75V < Voc <5.25V [ ewoo. | —ramueren | resreowmenss — [amt ae] or _| Ve Lows v Vie High? v Vie Clamp ty = -18mA, 08 v TE; = Low, CE23 = High Vo Low lour = 16mA. v Vou High lout = -2mA v Low Vin = 0.45V ~250 yA High Vi = 5.25V 40 pA Hi-Z state TE; = High, Cp, = Low, Vout = 0.5V BA TE; = High, CE23 = Low, Vout = 5.25V Short circuit? TE; = Low, CEa,3 = High, Vour = OV mA ‘Supply current® a = TE, = High, CE, 3 = Low Cw Input Vw = 2.0V Cour Output Vour = 2.0V NOTES: 1. Positive current is defined as into the terminal referenced. 2. All voltages with respect to network ground. 3. Duration of short circuit should not exceed 1 second. 4. Typical values are at Voc = 5V, Ta = +25°C. 5. Measured with all inputs grounded and all outputs open. November 10, 1988 337 ’

Philips Components-Signetics Memory Products Product Specification ricwmpmenesomiem tones 16K-bit TTL bipolar PROM (2048 x 8) 82LHS191 _TempntTy pipotar Prom@emer AC ELECTRICAL CHARACTERISTICS R, = 2702, Rp = 600M, Cy = 30pF 0°C < Ta < +75°C, 4.75V < Voc < 5.25V ee MA ‘Output ‘Address: ns. tee Output Chip Enable ns [eo [SSS Ts Pm fT | NOTES: 1. Typical values are at Voc = 5V, Ta = +25°C. 2. Tested at an address cycle time of Ths. 3. Measured at a delta of 0.5V from Logic Level with R; = 7500, Rz = 7502, C, =5pF. TEST LOAD CIRCUITS Yoo fr ° Lael on ° ° as i} Rr ° a 1 o_418 ! cy, (INCLUDES SCOPE AND oy gf Lo ney % SeeRpas Nee VOLTAGE WAVEFORMS. om . - \\E- co ee You a November 10, 1988 338