Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74BCT979 Datenblatt(PDF) 6 Page - Texas Instruments |
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SN74BCT979 Datenblatt(HTML) 6 Page - Texas Instruments |
6 / 10 page SN74BCT979 9BIT REGISTERED BTL TRANSCEIVER WITH PARITY GENERATOR/CHECKER SCBS115A − OCTOBER 1990 − REVISED NOVEMBER 1993 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK LE, OE, SEL, ODD/EVEN, AI1 − AI8, APARI VCC = 4.5 V, II = −18 mA −1.2 V IOH B1 − B8, BPAR VCC = 5.5 V, VOH = 2.1 mA 100 µA VOH AO1 − AO8, APARO, ERRA, ERRB VCC = 4.5 V IOH = −1 mA 2.5 3.4 V VOH AO1 − AO8, APARO, ERRA, ERRB VCC = 4.5 V IOH = − 3 mA 2.4 3.3 V IOL = 24 mA 0.35 0.5 VOL AO1 − AO8, APARO, ERRA, ERRB VCC = 4.5 V IOL = 80 mA 0.75 1.1 V VOL AO1 − AO8, APARO, ERRA, ERRB VCC = 4.5 V IOL = 100 mA 0.75 1.15 V II LE, OE, SEL, ODD/EVEN, AI1 − AI8, APARI VCC = 5.5 V, VI = 5.5 V 100 µA IIH LE, OE, SEL, ODD/EVEN, AI1 − AI8, APARI VCC = 5.5 V VI = 2.7 V 20 A IIH B1 − B8, BPAR‡ VCC = 5.5 V VI = 2.1 V 100 µA IIL LE, OE, SEL, ODD/EVEN, AI1 − AI8, APARI VCC = 5.5 V VI = 0.5 V −20 A IIL B1 − B8, BPAR‡ VCC = 5.5 V VI = 0.3 V −100 µA IOZH AO1 − AO8, APARO VCC = 5.5 V, VO = 2.7 V 50 µA IOZL AO1 − AO8, APARO VCC = 5.5 V, VO = 0.5 V −50 µA IOS§ AO1 − AO8, APARO VCC = 5.5 V, VO = 0 −60 − 200 mA Outputs high 17 36 ICC Outputs low VCC = 5.5 V, Outputs open 69 85 mA Outputs disabled 21 42 Ci LE, OE, SEL, ODD/EVEN VCC = 5 V, VI = 2.5 V or 0.5 V 8 pF Ci AI1 − AI8, APARI VCC = 5 V, VI = 2.5 V or 0.5 V 8 pF Cio B1 − B8, BPAR VCC = 5 V, VO = 2.5 V or 0.5 V 5 pF Co AO1 − AO8, APARO VCC = 5 V, VO = 2.5 V or 0.5 V 6.5 pF TT Output transition time B port¶ 1 ns † All typical values are at VCC = 5 V, TA = 25°C. ‡ For I/O ports, the parameters IIH and IIL include the off-state output current. § Not more than one output should be tested at a time, and the duration of the test should not exceed one second. ¶ Measured from 1.3 V to 1.8 V (see Figure 1). timing requirements over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) VCC = 5 V, TA = 25°C MIN MAX UNIT MIN MAX MIN MAX UNIT tw Pulse duration LEAB high 5 5 ns tw Pulse duration LEBA high 4 4 ns AI1 − AI8, APARI before LEAB ↓ Data high 4 4 tsu Setup time AI1 − AI8, APARI before LEAB ↓ Data low 3 3 ns tsu Setup time B1 − B8, BPAR before LEBA ↓ Data high 8.5 8.5 ns B1 − B8, BPAR before LEBA ↓ Data low 7 7 AI1 − AI8, APARI after LEAB ↓ Data high 1 1 th Hold time AI1 − AI8, APARI after LEAB ↓ Data low 2.5 2.5 ns th Hold time B1 − B8, BPAR after LEBA ↓ Data high 0.5 0.5 ns B1 − B8, BPAR after LEBA ↓ Data low 0.5 0.5 |
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Ähnliche Beschreibung - SN74BCT979 |
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