SN74AHCT1G08
SCLS315Q –MARCH 1996 –REVISED APRIL 2016 |
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www.ti.com |
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7 Parameter Measurement Information |
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VCC |
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Ω S1 |
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RL = 1 |
Open |
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TEST |
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S1 |
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From Output |
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Test |
From Output |
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k |
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GND |
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Under Test |
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Point |
Under Test |
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tPLH/tPHL |
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Open |
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CL |
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CL |
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tPLZ/tPZL |
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VCC |
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(see Note A) |
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(see Note A) |
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tPHZ/tPZH |
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GND |
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Open Drain |
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VCC |
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LOAD CIRCUIT FOR |
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LOAD CIRCUIT FOR |
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TOTEM-POLE OUTPUTS |
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3-STATE AND OPEN-DRAIN OUTPUTS |
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3 V |
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Timing Input |
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1.5 V |
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0 V |
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tw |
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th |
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3 V |
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tsu |
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3 V |
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1.5 V |
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1.5 V |
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Input |
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Data Input |
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1.5 V |
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1.5 V |
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0 V |
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0 V |
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VOLTAGE WAVEFORMS
PULSE DURATION
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3 V |
Input |
1.5 V |
1.5 V |
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0 V |
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tPLH |
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tPHL |
In-Phase |
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VOH |
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50% VCC |
50% VCC |
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Output |
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VOL |
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tPHL |
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tPLH |
Out-of-Phase |
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VOH |
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50% VCC |
50% VCC |
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Output
VOL
VOLTAGE WAVEFORMS
PROPAGATION DELAY TIMES
INVERTING AND NONINVERTING OUTPUTS
CL includes probe and jig capacitance.
VOLTAGE WAVEFORMS
SETUP AND HOLD TIMES
Output |
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3 V |
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1.5 V |
1.5 V |
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Control |
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0 V |
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tPZL |
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tPLZ |
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Output |
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≈VCC |
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Waveform 1 |
50% VCC |
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S1 at VCC |
VOL + 0.3 V |
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(see Note B) |
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VOL |
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tPZH |
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tPHZ |
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Output |
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VOH |
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Waveform 2 |
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S1 at GND |
50% VCC |
VOH − 0.3 V |
(see Note B) |
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≈0 V |
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VOLTAGE WAVEFORMS |
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ENABLE AND DISABLE TIMES
LOWAND HIGH-LEVEL ENABLING
Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr ≤ 3 ns, tf ≤ 3 ns.
The outputs are measured one at a time with one input transition per measurement.
All parameters and waveforms are not applicable to all devices.
Figure 2. Load Circuit and Voltage Waveforms
6 |
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Copyright © 1996–2016, Texas Instruments Incorporated |
Product Folder Links: SN74AHCT1G08