74LV245N 查看數據表（PDF） - Philips Electronics
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74LV245N Datasheet PDF : 12 Pages
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Philips Semiconductors
Octal bus transceiver (3-State)
TEST CIRCUIT
PULSE
GENERATOR
VI
RT
VCC
D.U.T.
VO
CL 50 pF
2 * VCC
Open
GND
RL = 1k
RL = 1k
Test Circuit for Outputs
DEFINITIONS
RL = Load resistor
CL = Load capacitance includes jig and probe capacitiance.
RT = Termination resistance should be equal to ZOUT of pulse generators.
SWITCH POSITION
TEST
S1
VCC
VI
tPLH/tPHL
Open
< 2.7V
VCC
tPLZ/tPZL
tPHZ/tPZH
2 * VCC
GND
2.7–3.6V
w 4.5V
2.7V
VCC
SV00896
Figure 3. Load circuitry for switching times.
Product specification
74LV245
1998 Apr 20
7
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