SN65ELT21 datasheet(3/11 Pages) TI

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PECL DC CHARACTERISTICS

TTL DC CHARACTERISTICS

AC CHARACTERISTICS

SN65ELT21

www.ti.com....................................................................................................................................................................................................... SLLS923 – JUNE 2009

At VCC = 5.0 V, GND = 0.0 V (unless otherwise noted)

(1) (2)

TA = –40°C

TA = 25°C

TA = 85°C

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

MIN

TYP

MAX

VIH

High-level input voltage,

3835

4120

3835

4120

3835

4120

single-ended

VIL

Low-leveI input voltage,

3190

3525

3190

3525

3190

3525

single-ended

VBB

Output reference voltage

3.62

3.69

3.74

3.62

3.69

3.74

3.62

3.69

3.74

VIHCMR

High-level input voltage,

See (3)

2.2

5.0

2.2

5.0

2.2

5.0

common-mode range,

differential

IIH

High-level input current

150

µA

IIL

Low-level input current

0.5

µA

(1)

The device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board

with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating

temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are

applied individually under normal operating conditions and not valid simultaneously.

(2)

Input parameters vary 1:1 with VCC. VCC can vary +0.7 V / –0.8 V.

(3)

VIHCMR(min) varies 1:1 with GND, VIHCMR(max) varies 1:1 with VCC.

At VCC = 4.2 V to 5.7 V, TA = –40°C to 85°C (unless otherwise noted)

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ICCH

Power supply current

ICCL

Power supply current

VOH

High-level output voltage

IOH = –3.0 mA

2.4

See (2)

VOL

Low-level output voltage

IOL = 24 mA

0.5

IOS

Output short circuit current

–150

–60

(1)

The device will meet the specifications after thermal balance has been established when mounted in a socket or printed circuit board

with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating

temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are

applied individually under normal operating conditions and not valid simultaneously.

(2)

VOH(max) level is VCC – 0.7.

At VCC = 4.2 V to 5.7 V, GND = 0.0 V (unless otherwise noted)

(1) (2)

TA = –40°C

TA = 25°C

TA = 85°C

TEST

PARAMETER

UNIT

CONDITIONS

MIN

TYP MAX

MIN

TYP MAX

MIN

TYP MAX

fMAX

Maximum switching

At Vol < 0.5V

200

MHz

frequency

(See Figure 4)

tPLH/tPHL

Propagation delay times

At 1.5 V

4.5

tJITTER

Random clock jitter (RMS)

VPP

Input swing

See (3)

200

1000

200

1000

200

1000

tr/tf

Output rise/fall times

Q (10%–90%)

750

780

910

(1)

The device will meet the specifications after thermal equilibrium has been established when mounted in a test socket or printed circuit

board with maintained transverse airflow greater than 500 lfpm. Electrical parameters are assured only over the declared operating

temperature range. Functional operation of the device exceeding these conditions is not implied. Device specification limit values are

applied individually under normal operating conditions and not valid simultaneously.

(2)

RL = 500 Ω to GND and CL = 20 pF to GND. See Figure 1.

(3)

VPP(min) is minimum input swing for which ac parameters are assured.

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