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MC74LCX16245DTR2 Просмотр технического описания (PDF) - ON Semiconductor

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MC74LCX16245DTR2 Low?Voltage CMOS 16?Bit Transceiver With 5 V?Tolerant Inputs and Outputs (3?State, Non?Inverting) ON-Semiconductor
ON Semiconductor ON-Semiconductor
MC74LCX16245DTR2 Datasheet PDF : 8 Pages
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MC74LCX16245
An, Bn
Bn, An
Vmi
tPHL
Vmo
OEn,T/Rn
Vmi
tPLH
Vmo
VCC
0V
VOH
An, Bn
VOL
An, Bn
tPZH
tPZL
Vmi
tPHZ
Vmo
tPLZ
Vmo
VCC
0V
VOH
VHZ
VLZ
VOL
WAVEFORM 1 − PROPAGATION DELAYS
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
WAVEFORM 2 − OUTPUT ENABLE AND DISABLE TIMES
tR = tF = 2.5 ns, 10% to 90%; f = 1 MHz; tW = 500 ns
Figure 3. AC Waveforms
Table 2. AC WAVEFORMS
Symbol
Vmi
Vmo
VHZ
VLZ
3.3 V ± 0.3 V
1.5 V
1.5 V
VOL + 0.3 V
VOH − 0.3 V
VCC
2.7 V
1.5 V
1.5 V
VOL + 0.3 V
VOH − 0.3 V
2.5 V + 0.2 V
VCC / 2
VCC / 2
VOL + 0.15 V
VOH − 0.15 V
PULSE
GENERATOR
VCC
DUT
RT
R1
CL
RL
6 V or VCC x 2
OPEN
GND
Figure 4. Test Circuit
Table 3. TEST CIRCUIT
TEST
SWITCH
tPLH, tPHL
tPZL, tPLZ
Open
6 V at VCC = 3.3  0.3 V
6 V at VCC = 2.5  0.2 V
Open Collector/Drain tPLH and tPHL
6V
tPZH, tPHZ
GND
CL = 50 pF at VCC = 3.3  0.3 V or equivalent (includes jig and probe capacitance)
CL = 30 pF at VCC = 2.5  0.2 V or equivalent (includes jig and probe capacitance)
RL = R1 = 500 W or equivalent
RT = ZOUT of pulse generator (typically 50 W)
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