SN54ABT620, SN74ABT620

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS113D – FEBRUARY 1991 – REVISED APRIL 1998

4

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT620

SN74ABT620

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

MAX

MIN

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.2

–1.2

–1.2

V

VCC = 4.5 V,

IOH = –3 mA

2.5

2.5

2.5

VOH

VCC = 5 V,

IOH = –3 mA

3

3

3

V

VOH

VCC =4 5V

IOH = –24 mA

2

2

V

VCC = 4.5 V

IOH = –32 mA

2*

2

VOL

VCC =4 5V

IOL = 48 mA

0.55

0.55

V

VOL

VCC = 4.5 V

IOL = 64 mA

0.55*

0.55

V

Vhys

100

mV

II

Control inputs

VCC =5 5V

VI =VCC or GND

±1

±1

±1

µA

II

A or B ports

VCC = 5.5 V,

VI = VCC or GND

±100

±100

±100

µA

IOZH‡

VCC = 5.5 V,

VO = 2.7 V

50

50

50

µA

IOZL‡

VCC = 5.5 V,

VO = 0.5 V

–50

–50

–50

µA

Ioff

VCC = 0,

VI or VO ≤ 4.5 V

±100

±100

µA

ICEX

VCC = 5.5 V,

VO = 5.5 V

Outputs high

50

50

50

µA

IO§

VCC = 5.5 V,

VO = 2.5 V

–50

–100

–180

–50

–180

–50

–180

mA

VCC = 5.5 V,

Outputs high

5

250

250

250

µA

ICC

A or B ports

VCC = 5.5 V,

IO = 0,

Outputs low

24

30

30

30

mA

VI = VCC or GND

Outputs disabled

0.5

250

250

250

µA

¶

Data inp ts

VCC = 5.5 V,

One input at 3.4 V,

Outputs enabled

1.5

1.5

1.5

∆ICC¶

Data inputs

,

Other inputs at

VCC or GND

Outputs disabled

0.05

0.05

0.05

mA

Control inputs

VCC = 5.5 V, One input at 3.4 V,

Other inputs at VCC or GND

1.5

1.5

1.5

Ci

Control inputs

VI = 2.5 V or 0.5 V

4

pF

Cio

A or B ports

VO = 2.5 V or 0.5 V

7

pF

* On products compliant to MIL-PRF-38535, this parameter does not apply.

† All typical values are at VCC = 5 V.

‡ The parameters IOZH and IOZL include the input leakage current.

§ Not more than one output should be tested at a time, and the duration of the test should not exceed one second.

¶ This is the increase in supply current for each input that is at the specified TTL voltage level rather than VCC or GND.

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.