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74F189 Datasheet(PDF) 5 Page - NXP Semiconductors |
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74F189 Datasheet(HTML) 5 Page - NXP Semiconductors |
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5 / 10 page  Philips Semiconductors Product specification 74F189A 64-bit TTL bipolar RAM, inverting (3-State) 1990 Feb 23 5 AC ELECTRICAL CHARACTERISTICS LIMITS Tamb = +25°C Tamb = 0°C to +70°C SYMBOL PARAMETER TEST VCC = +5.0V VCC = +5.0V ± 10% UNIT CONDITION CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX tPLH tPHL Access time Propagation delay An to Qn Waveform 1 2.5 2.0 5.0 4.5 8.0 8.0 2.5 2.0 8.0 8.0 ns tPZH tPZL Enable time CE to Qn Waveform 2 2.0 2.0 3.5 4.0 6.0 7.0 1.5 2.0 7.0 7.5 ns tPHZ tPLZ Disable time CE to Qn Waveform 3 2.5 1.5 4.5 3.0 7.0 5.5 2.0 1.5 8.0 6.0 ns tPZH tPZL Write recovery time Enable time WE to Qn Waveform 4 2.0 2.5 4.0 4.5 6.5 7.5 2.0 2.5 7.0 8.0 ns tPHZ tPLZ Disable time WE to Qn Waveform 4 3.5 1.5 5.5 3.5 8.5 6.5 3.0 1.5 9.0 7.0 ns AC SETUP REQUIREMENT LIMITS Tamb = +25°C Tamb = 0°C to +70°C SYMBOL PARAMETER TEST VCC = +5.0V VCC = +5.0V ± 10% UNIT CONDITION CL = 50pF, RL = 500Ω CL = 50pF, RL = 500Ω MIN TYP MAX MIN MAX tsu(H) tsu(L) Setup time, high or low An to WE Waveform 4 4.5 4.5 5.0 5.0 ns th(H) th(L) Hold time, high or low An to WE Waveform 4 0 0 0 0 ns tsu(H) tsu(L) Setup time, high or low Dn to WE Waveform 4 7.5 6.5 9.0 8.0 ns th(H) th(L) Hold time, high or low Dn to WE Waveform 4 0 0 0 0 ns tsu(L) Setup time, low CE (falling edge) to WE (falling edge) Waveform 4 0 0 ns th(L) Hold time, low WE (falling edge) to WE (rising edge) Waveform 4 6.5 7.5 ns tw(L) Pulse width, low WE Waveform 4 7.0 8.0 ns AC WAVEFORMS FOR READ CYCLES VM VM Qn An tPHL tPLH NOTE: For all waveforms, VM = 1.5V. SF00303 Waveform 1. Read cycle, address access time |
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