82S191 PHILIPS

Document overview

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Technical content

Philips Semiconductors Product specification 82S191/82S191A16K-bit TTL bipolar PROM (2048 x 8) 1March 14, 1989 853-0139 96054

DESCRIPTION

The 82S191 and 82S191A are field programmable, which means that custom patterns are immediately available by following the Signetics Generic I fusing procedure. The 82S191 and 82S191A are supplied with all outputs at logical Low. Outputs are programmed to a logic High level at any specified address by fusing the Ni-Cr link matrix. These devices include on-chip decoding and 3 Chip Enable inputs for ease of memory expansion. They feature 3-State outputs for optimization of word expansion in bused organizations. Ordering information can be found on the following page. The 82S191 and 82S191A devices are also processed to military requirements for operation over the military temperature range. For specifications and ordering information, consult the Signetics Military Data Handbook.

FEATURES

  • Address access time: – N82S191: 80ns max – N82S191A: 55ns max
  • Power dissipation: 40µW/bit typ
  • Input loading: –100µA max
  • Three Chip Enable inputs
  • On-chip address decoding
  • No separate fusing pins
  • Unprogrammed outputs are Low level
  • Fully TTL compatible
  • Outputs: 3-State

APPLICATIONS

  • Sequential controllers
  • Microprogramming
  • Hardwired algorithms
  • Control store
  • Random logic
  • Code conversion PIN CONFIGURA TIONS 8 17 24A7 VCC CE 1 CE2 CE3 A Package N Package A10 12 13 16O1 GND 1234 12 13 14 15 16 17 18 262728 NC NC A7A6A5 O2 O3 GND O4 O5 A10 CE 1 CE2 CE3 A9A8VCC NC NC O6 BLOCK DIAGRAM O2 O4 O6 O8 A10 CE2 ADDRESS LINES 1:128 DECODER 128 × 128 MATRIX 8 3-STATE DRIVERS OUTPUT LINES O1 O3 O5 O7 1:16 MUX 1:16 MUX 1:16 MUX 1:16 MUX 1:16 MUX 1:16 MUX 1:16 MUX 1:16 MUX CE3 CE 1

Philips Semiconductors Product specification 82S191/82S191A16K-bit TTL bipolar PROM (2048 x 8) March 14, 1989 2

ORDERING INFORMATION

24-Pin Plastic Dual-In-Line 600mil-wide N82S191 N, N82S191A N 28-Pin Plastic Leaded Chip Carrier 450mil-square N82S191 A, N82S191A A ABSOLUTE MAXIMUM RA TINGS SYMBOL PARAMETER RATING UNIT VCC Supply voltage +7.0 VDC VIN Input voltage +5.5 VDC VO Output voltage Off-State +5.5 VDC Tamb Operating temperature range 0 to +75 °C Tstg Storage temperature range –65 to +150 °C DC ELECTRICAL CHARACTERISTICS 0°C ≤ Tamb ≤ +75°C, 4.75V ≤ VCC ≤ 5.25V SYMBOL PARAMETER TEST CONDITIONS 1, 2 LIMITS UNIT MIN TYP 3 MAX Input voltage VIL Low 0.8 V VIH High 2.0 V VIC Clamp IIN = –12mA –0.8 –1.2 V Output voltage CE 1 = Low, CE2,3 = High VOL Low IOUT = 9.6mA 0.45 V VOH High IOUT = –2.0mA 2.4 V Input current1 IIL Low VIN = 0.45V –100 µA IIH High VIN = 5.5V 40 µA Output current1 IOZ Hi-Z state CE 1 = High, CE2,3 = Low, VOUT = 0.5V –40 µA CE 1 = High, CE2,3 = Low, VOUT = 5.5V 40 µA IOS Short circuit (82S123A)4 CE 1 = Low, CE2,3 = High, VOUT = 0V –15 –70 mA Supply current5 ICC VCC = 5.25V 130 175 mA Capacitance CE 1 = High, CE2,3 = Low, VCC = 5.0V C IN Input VIN = 2.0V 5 pF C OUT Output VOUT = 2.0V 8 pF NOTES: 1. Positive current is defined as into the terminal referenced. 2. All voltages with respect to network ground terminal. 3. Typical values are at VCC = 5V, Tamb = +25°C. 4. Duration of short circuit should not exceed 1 second. 5. Measured with all inputs grounded and all outputs open.

Philips Semiconductors Product specification 82S191/82S191A16K-bit TTL bipolar PROM (2048 x 8) March 14, 1989 3 AC ELECTRICAL CHARACTERISTICS R 1 = 2=470Ω , R2 = 1kΩ , CL = 30pF, 0°C ≤ Tamb ≤ +75°C, 4.75V ≤ VCC ≤ 5.25V SYMBOL PARAMETER TO FROM LIMITS LIMITS UNIT MIN TYP 1 MAX MIN TYP 1 MAX Access time2 tAA Output Address 50 80 50 55 ns tCE Output Chip Enable 30 40 20 30 ns Disable time3 tCD Output Chip Disable 30 40 20 30 ns NOTES: 1. Typical values are VCC = 5V, Tamb = +25°C. 2. Tested at an address cycle time of 1µs. 3. Measured at a delta of 0.5V from Logic Level with R1 = 750Ω , R2 = 750Ω and CL = 5pF. TEST LOAD CIRCUIT CE 1 GND VCC VCC R 1 R 2 C L (INCLUDES SCOPE AND JIG CAPACITANCE) DUT A10 CE2 CE3 VOLTAGE WAVEFORMS tCE +3.0V +3.0V 1.5V1.5V 1.5VADDRESS CE 1 tCD tAA All inputs tr = tf = 5ns (10% to 90%). All AC parameters are measured at 1.5V unless otherwise specified. VOH VOL Hi-ZO1 - O8 CE2, CE3