SN54ABT16827, SN74ABT16827

20-BIT BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS220C – JUNE 1992 – REVISED MAY 1997

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT16827

SN74ABT16827

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

VCC = 0 to 5.5 V,

VI = VCC or GND

±1

±1

±1

µA

IOZPU‡

VCC = 0 to 2.1 V,

VO = 0.5 V to 2.7 V, OE = X

±50

±50

±50

µA

IOZPD‡

VCC = 2.1 V to 0,

VO = 0.5 V to 2.7 V, OE = X

±50

±50

±50

µA

IOZH

VCC = 2.1 V to 5.5 V,

VO = 2.7 V, OE ≥ 2 V

10

10

10

µA

IOZL

VCC = 2.1 V to 5.5 V,

VO = 0.5 V, OE ≥ 2 V

–10

–10

–10

µA

Ioff

VCC = 0,

VI or VO ≤ 4.5 V

±100

±100

µA

ICEX

Outputs high

VCC = 5.5 V,

VO = 5.5 V

50

50

50

µA

IO§

VCC = 5.5 V,

VO = 2.5 V

–50

–100

–180

–50

–180

–50

–180

mA

Outputs high

V5 5 V I

0

2

2

2

ICC

Outputs low

VCC = 5.5 V, IO = 0,

VI =VCC or GND

32

32

32

mA

Outputs disabled

VI = VCC or GND

2

2

2

∆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

3

pF

Co

VO = 2.5 V or 0.5 V

7.5

pF

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

† All typical values are at VCC = 5 V.

‡ This parameter is characterized, but not production tested.

§ 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.

switching characteristics over recommended ranges of supply voltage and operating free-air

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

TA = 25°C

SN54ABT16827

SN74ABT16827

UNIT

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

tPLH

A

Y

1

1.9

3.1

1

3.6

1

3.4

ns

tPHL

A

Y

1

2.1

3.7

1

4.5

1

4.2

ns

tPZH

OE

Y

1

2.8

5

1

5.9

1

5.6

ns

tPZL

OE

Y

1

2.8

4.9

1

5.8

1

5.5

ns

tPHZ

OE

Y

2.4

4.5

6.5

2.4

6.8

2.4

6.6

ns

tPLZ

OE

Y

1.6

3.7

5.7

1.6

7.1

1.6

6.1

ns

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.