SN54ABT16543, SN74ABT16543

16-BIT REGISTERED TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS087C – FEBRUARY 1991 – REVISED JANUARY 1997

6

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT16543

SN74ABT16543

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 = 5.5 V,

VI = VCC or GND

±1

±1

±1

µA

I

A or B ports

CC

,

ICC

±100

±100

±100

µ

IOZH‡

VCC = 5.5 V,

VO = 2.7 V

50**

10

50

µA

IOZL‡

VCC = 5.5 V,

VO = 0.5 V

–50**

–10

–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

–200

–50

–200

–50

–200

mA

VCC = 5.5 V,

Outputs high

2

2

2

ICC

A or B ports

VCC = 5.5 V,

IO = 0,

Outputs low

35

35

35

mA

VI = VCC or GND

Outputs disabled

2

2

2

∆ICC¶

VCC = 5.5 V, One input at 3.4 V,

Other inputs at VCC or GND

0.5

0.5

0.5

mA

Ci

Control

inputs

VI = 2.5 V or 0.5 V

3

pF

Cio

A or B ports

VO = 2.5 V or 0.5 V

8.5

pF

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

** These limits apply only to the SN74ABT16543.

† 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.

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

SN54ABT16543

SN74ABT16543

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

tw

Pulse duration, LEAB or LEBA low

4

4

4

ns

t

Set p time data before LEAB

↑ or LEBA↑

High

1.5

1.5

1.5

ns

tsu

Setup time, data before LEAB

↑ or LEBA↑

Low

3.5

3.5

3.5

ns

th

Hold time data after LEAB

↑ or LEBA↑

High

1.5

1.5

1.5

ns

th

Hold time, data after LEAB

↑ or LEBA↑

Low

2

2

2

ns