SN54ABT377, SN74ABT377

OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH CLOCK ENABLE

SCBS156B – FEBRUARY 1991 – REVISED JULY 1994

2–4

POST OFFICE BOX 655303

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

otherwise noted)

PARAMETER

TEST CONDITIONS

TA = 25°C

SN54ABT377

SN74ABT377

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

II

VCC = 5.5 V,

VI = VCC or GND

±1

±1

±1

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

ICC

VCC = 5.5 V,

IO = 0,

Outputs high

1

250

250

250

µA

ICC

CC

,

O

,

VI = VCC or GND

Outputs low

24

30

30

30

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

pF

* On products compliant to MIL-STD-883, Class B, 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

SN54ABT377

SN74ABT377

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

fclock

Clock frequency

0

150

0

150

0

150

MHz

tw

Pulse duration

CLK high or low

3.3

3.3

3.3

ns

t

Setup time before CLK

↑

Data high or low

2

2.5

2

ns

tsu

Setup time before CLK

↑

CLKEN high or low

3

3

3

ns

th

Hold time after CLK

↑

Data high or low

1.8¶

1.8¶

1.8¶

ns

th

Hold time after CLK

↑

CLKEN high or low

1.8¶

1.8¶

1.8¶

ns

¶ This data sheet limit may vary among suppliers.

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

PARAMETER

FROM

(INPUT)

TO

(OUTPUT)

VCC = 5 V,

TA = 25°C

SN54ABT377

SN74ABT377

UNIT

(INPUT)

(OUTPUT)

MIN

TYP

MAX

MIN

MAX

MIN

MAX

fmax

150

150

150

MHz

tPLH

CLK

Q

2.2

4.5

6

2.2

7

2.2

6.5

ns

tPHL

CLK

Q

3.1

5.3

6.8

2

7.6

3.1

7.3

ns