SN55121, SN75121

DUAL LINE DRIVERS

SLLS074C – SEPTEMBER 1973 – REVISED MAY 1998

4

POST OFFICE BOX 655303

electrical characteristics over recommended ranges of supply voltage and operating free-air

temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

MAX

UNIT

VIK

Input clamp voltage

VCC = 5 V,

II = – 12 mA

– 1.5

V

V(BR)

Breakdown voltage

VCC = 5 V,

II = 10 mA

5.5

V

VOH

High-level output voltage

VIH = 2 V,

IOH = – 75 mA,

See Note 2

2.4

V

IOH

High-level output current

VCC = 5 V,

TA = 25°C,

VIH = 4.5 V,

See Note 2

VOH = 2 V,

– 100

– 250

mA

IOL

Low-level output current

VIL = 0.8 V,

VOL = 0.4 V,

See Note 2

– 800

µA

IO(off)

Off-state output current

VCC = 3 V,

VO = 3 V

500

µA

IIH

High-level output current

VI = 4.5 V

40

µA

IIL

Low-level output current

VI = 0.4 V

– 0.1

– 1.6

mA

IOS

Short-circuit output current†

VCC = 5 V,

TA = 25°C

–30

mA

ICCH

Supply current, outputs high

VCC = 5.25 V,

All inputs at 2 V,

Outputs open

28

mA

ICCL

Supply current, outputs low

VCC = 5.25 V,

All inputs at 0.8 V,

Outputs open

60

mA

† Not more than one output should be shorted at a time.

NOTE 2: The output voltage and current limits are valid for any appropriate combination of high and low inputs specified by the function table

for the desired output.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPLH Propagation delay time, low-to-high level output

RL =37 Ω

CL =15 pF

See Figure 1

11

20

ns

tPHL Propagation delay time, high-to-low level output

RL = 37 Ω,

CL = 15 pF,

See Figure 1

8

20

ns

tPLH Propagation delay time, low-to-high level output

RL =37 Ω

CL = 1000 pF

See Figure 1

22

50

ns

tPHL Propagation delay time, high-to-low level output

RL = 37 Ω,

CL = 1000 pF,

See Figure 1

20

50

ns

PARAMETER MEASUREMENT INFORMATION

≤ 5 ns

0 V

VOH

VOL

3 V

≤ 5 ns

Input

10%

1.5 V

90%

tPLH

Output

tPHL

VOLTAGE WAVEFORMS

1.5 V

1.5 V

10%

1.5 V

90%

TEST CIRCUIT

Output

3 V

VCC

RL

CL

(see Note B)

Pulse

Generator

(see Note A)

NOTES: A. The pulse generator has the following characteristics: ZO ≈ 50 Ω, tw = 200 ns, duty cycle ≤ 50%, PRR ≤ 500 kHz.

B. CL includes probe and jig capacitance.

Figure 1. Test Circuit and Voltage Waveforms