SN74LS240DB datasheet(13/41 Pages) TI1

13 / 41 page

Req

VCC

Input

VCC

Output

GND

9 kΩ NOM

Input

VCC

SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244

SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244

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SDLS144D – APRIL 1985 – REVISED OCTOBER 2016

Product Folder Links: SN54LS240 SN54LS241 SN54LS244 SN54S240 SN54S241 SN54S244 SN74LS240

SN74LS241 SN74LS244 SN74S240 SN74S241 SN74S244

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Table 2. SNx4LS241 and SNx4S241

Function Table

CHANNEL 1

CHANNEL 2

INPUTS

OUTPUT

INPUTS

OUTPUT

Table 3. SNx4LS244 and SNx4S244

Function Table

INPUTS

OUTPUTS

Figure 19. SNx4LS240, SNx4LS241, SNx4LS244

Equivalent of Each Input

G and G inputs: Req = 2 kΩ NOM

A inputs: Req = 2.8 kΩ NOM

Figure 20. SNx4S240, SNx4S241, SNx4S244

Equivalent of Each Input

SNx4LS240, SNx4LS241, SNx4LS244:

R = 50 Ω NOM

SNx4S240, SNx4S241, SNx4S244:

R = 25 Ω NOM

Figure 21. Typical of All Outputs

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