SN74LS240 データシートの表示（PDF） - Motorola => Freescale

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SN74LS240

OCTAL BUFFER/LINE DRIVER WITH 3-STATE OUTPUTS

Motorola => Freescale 

SN54/74LS240 • SN54/74LS241 • SN54/74LS244

AC WAVEFORMS

VIN

1.3 V

tPLH

VOUT

1.3 V

1.3 V

tPHL

1.3 V

Figure 1

VIN

1.3 V

tPHL

VOUT

1.3 V

1.3 V

tPLH

1.3 V

Figure 2

TO OUTPUT

UNDER TEST

VCC

RL

SW1

5 kΩ

CL*

SW2

VE

VE

VOUT

1.3 V

1.3 V

tPZL

1.3 V

tPLZ

≈ 1.3 V

0.5 V

VOL

Figure 3

VE

VE

VOUT

1.3 V

tPZH

1.3 V

1.3 V

tPHZ

≥VOH

≈ 1.3 V

0.5 V

Figure 4

SWITCH POSITIONS

Figure 5

FAST AND LS TTL DATA

5-390

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