SN54ABTH32318, SN74ABTH32318

18-BIT TRI-PORT UNIVERSAL BUS EXCHANGERS

SCBS180E – JUNE 1992 – REVISED MAY 1997

6

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

SN54ABTH32318

SN74ABTH32318

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

MIN

TYP†

MAX

UNIT

VIK

VCC = 4.5 V,

II = –18 mA

–1.2

–1.2

V

VCC = 4.5 V,

IOH = –3 mA

2.5

2.5

VOH

VCC = 5 V,

IOH = –3 mA

3

3

V

VOH

VCC =4 5V

IOH = –24 mA

2

V

VCC = 4.5 V

IOH = –32 mA

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

100

mV

II

Control inputs

VCC = 0 to 5.5 V,

VI = VCC or GND

±1

±1

µA

II

A, B, or C ports

VCC = 2.1 V to 5.5 V,

VI = VCC or GND

±20

±20

µA

II(h ld) ABor C ports

VCC =4 5V

VI = 0.8 V

100

100

µA

II(hold) A, B, or C ports

VCC = 4.5 V

VI = 2 V

–100

–100

µA

IOZPU‡

VCC = 0 to 2.1 V, VO = 0.5 V to 2.7 V, OE = X

±50

±50

µA

IOZPD‡

VCC = 2.1 V to 0, VO = 0.5 V to 2.7 V, OE = X

±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

µA

IO§

VCC = 5.5 V,

VO = 2.5 V

–50

–100

–180

–50

–100

–180

mA

VCC = 5.5 V,

Outputs high

2

2

ICC

VCC = 5.5 V,

IO = 0,

Outputs low

45

45

mA

VI = VCC or GND

Outputs disabled

1

1

∆ICC¶

VCC = 5.5 V, One input at 3.4 V,

05

05

mA

∆ICC¶

CC

Other inputs at VCC or GND

0.5

0.5

mA

Ci

Control inputs

VI = 2.5 V or 0.5 V

3

3

pF

Cio

A, B, or C ports

VO = 2.5 V or 0.5 V

11.5

11.5

pF

† All typical values are at VCC = 5 V, TA = 25°C.

‡ This parameter is specified by characterization.

§ 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)

SN54ABTH32318

SN74ABTH32318

UNIT

MIN

MAX

MIN

MAX

UNIT

fclock

Clock frequency

150

150

MHz

t

Pulse duration

LE high

3.3

3.3

ns

tw

Pulse duration

CLK high or low

3.3

3.3

ns

t

Setup time

A, B, or C before CLK

↑

2.4

2.4

ns

tsu

Setup time

A, B, or C before LE

↓

2.1

2.1

ns

th

Hold time

A, B, or C after CLK

↑

1.4

1.4

ns

th

Hold time

A, B, or C after LE

↓

2.1

2.1

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.