SN54ABT2952, SN74ABT2952

OCTAL BUS TRANSCEIVERS AND REGISTERS

WITH 3STATE OUTPUTS

SCBS202 − NOVEMBER 1990 − REVISED OCTOBER 1992

POST OFFICE BOX 655303

POST OFFICE BOX 1443

2−4

recommended operating conditions (see Note 2)

SN54ABT2952

SN74ABT2952

UNIT

MIN

MAX

MIN

MAX

UNIT

VCC

Supply voltage

4.5

5.5

4.5

5.5

V

VIH

High-level input voltage

2

2

V

VIL

Low-level input voltage

0.8

0.8

V

VI

Input voltage

0

VCC

0

VCC

V

IOH

High-level output current

−24

−32

mA

IOL

Low-level output current

48

64

mA

∆t/∆v

Input transition rise or fall rate

Outputs enabled

10

10

ns / V

TA

Operating free-air temperature

−55

125

−40

85

°C

NOTE 2: Unused or floating pins (input or I/O) must be held high or low.

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT2952

SN74ABT2952

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 = 4.5 V,

IOH = − 24 mA

2

2

V

VCC = 4.5 V,

IOH = − 32 mA

2‡

2

VOL

VCC = 4.5 V,

IOL = 48 mA

0.55

0.55

V

VOL

VCC = 4.5 V,

IOL = 64 mA

0.55‡

0.55

V

II

VCC = 5.5 V,

Control inputs

±1

±1

±1

A

II

VCC = 5.5 V,

VI = VCC or GND

A or B ports

±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,

A or B

Outputs high

1

250

250

250

µA

ICC

VCC = 5.5 V,

IO = 0,

A or B

ports

Outputs low

24

35

35

35

mA

IO = 0,

VI = VCC or GND

ports

Outputs disabled

0.5

250

250

250

µA

∆ICC#

VCC = 5.5 V,

One input at 3.4 V,

Other inputs at VCC or GND

1.5

1.5

1.5

mA

Ci

VI = 2.5 V or 0.5 V

Control inputs

3.5

pF

Cio

VO = 2.5 V or 0.5 V

A or B ports

7.5

pF

† All typical values are at VCC = 5 V.

‡ On products compliant to MIL-STD-883, Class B, this parameter does not apply.

§ 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.