SN75LBC775

SINGLE-CHIP APPLETALK

™ AND LOCALTALK™ TRANSCEIVER

SLLS216A – MAY 1995 – REVISED JANUARY 1996

4

POST OFFICE BOX 655303

POST OFFICE BOX 1443

DRIVER

electrical characteristics over recommend operating characteristics (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VOH

High-level output voltage

Single ended

RL =3kΩ

See Figure 1

3.7

V

VOL

Low-level output voltage

Single ended

RL = 3 kΩ,

See Figure 1

– 3.7

V

|VOD|

Magnitude of differential output voltage (VDY – VDZ)

See Figure 2

4.0

5.6

V

∆|VOD|

Change in differential voltage magnitude

See Figure 2

10

250

mV

VOC

Common-mode output voltage‡

See Figure 3

–1

3

V

∆VOC(SS) Change in steady-state common-mode output voltage

See Figure 3

±200

mV

IOZ

High-impedance output current

VCC = 0, –10 V ≤ VO ≤ 10 V

±100

µA

IOS

Short-circuit output current

–5 V

≤ VO ≤ 5 V

450

mA

ICC

Supply current

DEN at 0 V,

REN at 5 V,

No load

5

10

mA

IIH

High-level input current

VI = 5 V

200

µA

IIL

low level input current

All terminals except REN

VI =0

– 100

– 200

µA

IIL

low-level input current

REN

VI = 0

– 300

– 455

µA

† All typical values are at VCC = 5 V and TA = 25°C.

‡ The algebraic convention, in which the less positive (more negative) limit is designated minimum, is used in this data sheet.

switching characteristics over recommend operating conditions (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

tPHL

Propagation delay time high to low level

Single ended

155

300

ns

tPHL

Propagation delay time, high- to low-level

Differential

115

180

ns

tPLH

Propagation delay time low to high level

Single ended

140

300

ns

tPLH

Propagation delay time, low- to high-level

Differential

115

180

ns

tPZL

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

100

250

ns

tPZH

Propagation delay time, high-impedance to high-level output

100

250

ns

tPLZ

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

See Figures 1 and 2

100

250

ns

tPHZ

Propagation delay time, high-level to high-impedance output

See Figures 1 and 2

100

250

ns

t

Rise time

Single ended

135

300

ns

tr

Rise time

Differential

90

180

ns

tf

Fall time

Single ended

145

300

ns

tf

Fall time

Differential

95

180

ns

tsk(p)

Pulse skew |tPLH-tPHL|

Single ended

15

50

ns

tsk(p)

Pulse skew, |tPLH-tPHL|

Differential

2

22

ns