SN65LVELT22DGK datasheet(3/11 Pages) TI

Part #	SN65LVELT22DGK

Description	3.3 V Dual LVTTL to DIfferential LVPECL Translator

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Manufacturer	TI [Texas Instruments]

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PECL DC CHARACTERISTICS

(1) (V

CC = 3.3 V, GND = 0.0 V

(2)

TTL DC CHARACTERISTICS

(1) (V

CC = 3.3 V; TA = –40°C to 85°C)

AC CHARACTERISTICS

(1)(V

CC = 3.3 V; GND = 0.0 V)

SN65LVELT22

www.ti.com............................................................................................................................................................................................ SLLS928 – DECEMBER 2008

–40°C

25°C

85°C

CHARACTERISTICS

UNIT

MIN

TYP

MAX

MIN

TYP MAX

MIN

TYP MAX

ICC

Power Supply Current

23

33

25

33

26

33

mA

VOH

Output HIGH Voltage (3)

2275 2317

2420 2275 2331 2420 2275 2343 2420

mV

VOL

Output LOW Voltage(3)

1490 1558

1680 1490 1556 1680 1490 1555 1680

mV

(1)

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 ±0.15 V

(3)

Outputs are terminated through a 50-

Ω resistor to VCC – 2.0 V.

CHARACTERISTIC

CONDITION

MIN

TYP

MAX

UNIT

IIH

Input HIGH current

VIN = 2.7 V

20

µA

IIHH

Input HIGH current max

VIN = VCC

100

µA

IIL

Input LOW current

VIN = 0.5 V

–0.2

mA

VIK

Input clamp diode voltage

IIN = –18 mA

–1.2

V

VIH

Input HIGH voltage

2.0

V

VIL

Input LOW voltage

0.8

V

(1)

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.

–40°C

25°C

85°C

CHARACTERISTIC

UNIT

MIN

TYP MAX

MIN

TYP

MAX

MIN

TYP

MAX

fMAX

Max switching frequency(2), see Figure 5

1750

1700

MHz

tPLH/tPHL

Propagation delay to output at 1.5V, see

200

425

550

200

445

550

200

460

550

ps

Figure 4

Within – device skew(3)

20

50

20

50

20

50

tSKEW

ps

Device-to-device skew(4)

30

100

30

100

30

100

tJITTER

Random clock jitter (RMS)

0.5

1.0

0.5

1.0

0.5

1.0

ps

tr/tf

Output rise/fall times Q (20%–80%)

300

500

300

500

300

500

ps

(1)

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)

Maximum switching frequency measured at output amplitude of 300 mVpp.

(3)

This is measured between outputs under the identical transitions and conditions on any one device.

(4)

Device-Device Skew is defined as identical transitions at identical VCC levels.

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