6

SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244

SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244

SDLS144D – APRIL 1985 – REVISED OCTOBER 2016

www.ti.com

Product Folder Links: SN54LS240 SN54LS241 SN54LS244 SN54S240 SN54S241 SN54S244 SN74LS240

SN74LS241 SN74LS244 SN74S240 SN74S241 SN74S244

Submit Documentation Feedback

Copyright © 1985–2016, Texas Instruments Incorporated

Electrical Characteristics – SNx4S24x (continued)

over recommended operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS(1)

MIN

TYP(2)

MAX

UNIT

(3)

Not more than one output must be shorted at a time, and duration of the short-circuit must not exceed one second.

IOZH

VCC = MAX, VIL = 0.8 V, VIH = 2 V, VO = 2.4 V

50

µA

IOZL

VCC = MAX, VIL = MAX, VIH = 2 V, VO = 0.5 V

–50

µA

II

VCC = MAX, VI = 5.5 V

1

mA

IIH

VCC = MAX, VI = 2.7 V

50

µA

IIL

VCC = MAX, VIL = 0.5 V

Any A

–400

µA

Any G

–2

mA

IOS

(3)

VCC = MAX

–50

–225

mA

ICC

VCC = MAX, output open

Outputs high

SN54S240

80

123

mA

SN74S240

80

135

SN54S241, SN54S244

95

147

SN74S241, SN74S244

95

160

Outputs low

SN54S240

100

145

SN74S240

100

150

SN54S241, SN54S244

120

170

SN74S241, SN74S244

120

180

Outputs disabled

SN54S240

100

145

SN74S240

100

150

SN54S241, SN54S244

120

170

SN74S241, SN74S244

120

180

6.7 Switching Characteristics – SNx4LS24x

VCC = 5 V, TA = 25°C (see SN54LS24x and SN74LS24x Devices)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

RL = 667 Ω, CL = 45 pF

SNx4LS240

9

14

ns

SNx4LS241, SNx4LS244

12

18

tPHL

RL = 667 Ω, CL = 45 pF

12

18

ns

tPZL

RL = 667 Ω, CL = 45 pF

20

30

ns

tPZH

RL = 667 Ω, CL = 45 pF

15

23

ns

tPLZ

RL = 667 Ω, CL = 5 pF

10

20

ns

tPHZ

RL = 667 Ω, CL = 5 pF

15

25

ns

6.8 Switching Characteristics – SNx4S24x

VCC = 5 V and TA = 25°C (see SN54S24x and SN74S24x Devices)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH

RL = 90 Ω, CL = 50 pF

SNx4S240

4.5

7

ns

SNx4S241, SNx4S244

6

9

tPHL

RL = 90 Ω, CL = 50 pF

SNx4S240

4.5

7

ns

SNx4S241, SNx4S244

6

9

tPZL

RL = 90 Ω, CL = 50 pF

10

15

ns

tPZH

RL = 90 Ω, CL = 50 pF

SNx4S240

6.5

10

ns

SNx4S241, SNx4S244

8

12

tPLZ

RL = 90 Ω, CL = 5 pF

10

15

ns

tPHZ

RL = 90 Ω, CL = 5 pF

6

9

ns