SN54ABT162841, SN74ABT162841

20BIT BUSINTERFACE DTYPE LATCHES

WITH 3STATE OUTPUTS

SCBS665C − JUNE 1996 − REVISED JUNE 2004

4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT162841

SN74ABT162841

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 = −1 mA

2.5

2.5

2.5

VOH

VCC = 5 V,

IOH = −1 mA

3

3

3

V

VOH

VCC = 4.5 V

IOH = −3 mA

2.4

2.4

2.4

V

VCC = 4.5 V

IOH = −12 mA

2*

2

VOL

VCC = 4.5 V

IOL = 8 mA

0.4

0.8

0.65

V

VOL

VCC = 4.5 V

IOL = 12 mA

0.8*

0.8

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

−25

−75

−100

−25

−100

−25

−100

mA

Outputs high

VCC = 5.5 V, IO = 0,

0.5

0.5

0.5

ICC

Outputs low

VCC = 5.5 V, IO = 0,

VI = VCC or GND

89

89

89

mA

ICC

Outputs disabled

VI = VCC or GND

0.5

0.5

0.5

mA

∆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

3.5

pF

Co

VO = 2.5 V or 0.5 V

9

pF

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

† All typical values are at VCC = 5 V.

‡ 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.

timing requirements over recommended ranges of supply voltage and operating free-air

temperature (unless otherwise noted) (see Figure 1)

VCC = 5 V,

TA = 25°C

SN54ABT162841

SN74ABT162841

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

tw

Pulse duration, LE high or low

4

4

4

ns

tsu

Setup time, data before LE

↓

0.8

0.8

0.8

ns

th

Hold time, data after LE

↓

1.8

1.8

1.8

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.