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74ALS646 Datasheet(PDF) 7 Page - NXP Semiconductors |
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74ALS646 Datasheet(HTML) 7 Page - NXP Semiconductors |
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7 / 13 page  Philips Semiconductors Product specification 74ALS646/74ALS646-1 74ALS648/74ALS648-1 Transceiver/register 1991 Feb 08 7 DC ELECTRICAL CHARACTERISTICS (Over recommended operating free-air temperature range unless otherwise noted.) SYMBOL PARAMETER TEST CONDITIONS1 LIMITS UNIT SYMBOL PARAMETER TEST CONDITIONS1 MIN TYP2 MAX UNIT VCC±10%, VIL = MAX, IOH = –0.4mA VCC – 2 V VOH High-level output voltage CC , IL , VIH = MIN IOH = –3mA 2.4 3.2 V VOH High level out ut voltage VCC = MIN, VIL = MAX, VIH = MIN IOH = –15mA 2.0 V All versions VCC = MIN, VIL = MAX, IOL = 12mA 0.25 0.40 V VOL Low-level output voltage All versions CC , IL , VIH = MIN IOL = 24mA 0.35 0.50 V VOL Low level out ut voltage -1 versions VCC = 4.75V, VIL = MAX, VIH = MIN IOL = 48mA 0.35 0.50 V VIK Input clamp voltage VCC = MIN, II = IIK –0.73 –1.5 V I Input current at maxi- control inputs VCC = MAX, VI = 7.0V 0.1 mA II mum input voltage A or B ports VCC = MAX, VI = 5.5V 0.1 mA IIH High-level input current3 VCC = MAX, VI = 2.7V 20 µA IIL Low-level input current3 VCC = MAX, VI = 0.4V –0.1 mA IO Output current4 VCC = MAX, VO = 2.25V –30 –112 mA ICCH 40 57 mA ICC Supply current (total) ICCL VCC = MAX 53 78 mA ICCZ 51 72 mA NOTES: 1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type. 2. All typical values are at VCC = 5V, Tamb = 25°C. 3. For I/O ports, the parameter IIH and IIL include the off-state current. 4. The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. AC ELECTRICAL CHARACTERISTICS FOR 74ALS646/74ALS646-1 LIMITS SYMBOL PARAMETER TEST CONDITION Tamb = 0°C to +70°C VCC = +5.0V ± 10% CL = 50pF, RL = 500Ω UNIT MIN MAX fmax Maximum clock frequency Waveform 1 100 MHz tPLH tPHL Propagation delay CPBA to An, CPAB to Bn Waveform 1 5.0 6.0 13.0 13.0 ns tPLH tPHL Propagation delay An to Bn or Bn to An Waveform 2, 3 2.0 3.0 8.0 9.0 ns tPLH tPHL Propagation delay SBA to An or SAB to Bn (A or B Low) Waveform 2, 3 5.0 5.0 13.0 11.0 ns tPLH tPHL Propagation delay SBA to An or SAB to Bn (A or B High) Waveform 2, 3 5.0 5.0 11.0 11.0 ns tPZH tPZL Output enable time OE to An or Bn Waveform 5 Waveform 6 3.0 5.0 9.0 11.0 ns tPHZ tPLZ Output disable time OE to An or Bn Waveform 5 Waveform 6 2.0 3.0 8.0 10.0 ns tPZH tPZL Output enable time DIR to An or Bn Waveform 5 Waveform 6 2.0 5.0 10.0 12.0 ns tPHZ tPLZ Output disable time DIR to An or Bn Waveform 5 Waveform 6 2.0 3.0 10.0 13.0 ns |
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