74ABT74DB datasheet(3/5 Pages) PHILIPS

3 / 5 page

Philips Semiconductors

Product specification

74ABT74

Dual D-type flip-flop

1995 Sep 22

DC ELECTRICAL CHARACTERISTICS

SYMBOL

PARAMETER

TEST CONDITIONS

LIMITS

UNIT

SYMBOL

PARAMETER

TEST CONDITIONS

Tamb = +25°C

Tamb = –40°C

to +85

°C

UNIT

MIN

TYP

MAX

MIN

MAX

VIK

Input clamp voltage

VCC = 4.5V; IIK = –18mA

–0.9

–1.2

VOH

High-level output voltage

VCC = 4.5V; IOH = –15mA; VI = VIL or VIH

2.5

2.9

2.5

VOL

Low-level output voltage

VCC = 4.5V; IOL = 20mA; VI = VIL or VIH

0.35

0.5

Input leakage current

VCC = 5.5V; VI = GND or 5.5V

±0.01

±1.0

µA

IOFF

Power-off leakage current

VCC = 0.0V; VO or VI ≤ 4.5V

±5.0

±100

µA

ICEX

Output High leakage current

VCC = 5.5V; VO = 5.5V; VI = GND or VCC

5.0

µA

Output current1

VCC = 5.5V; VO = 2.5V

–50

–75

–180

–50

–180

ICC

Quiescent supply current

VCC = 5.5V; VI = GND or VCC

µA

∆ICC

Additional supply current per

input pin2

VCC = 5.5V; One data input at 3.4V, other

inputs at VCC or GND

0.25

500

µA

NOTES:

1. Not more than one output should be tested at a time, and the duration of the test should not exceed one second.

2. This is the increase in supply current for each input at 3.4V.

3. For valid test results, data must not be loaded into the flip-flop or latch after applying the power.

AC ELECTRICAL CHARACTERISTICS

GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω

SYMBOL

PARAMETER

WAVEFORM

LIMITS

UNIT

SYMBOL

PARAMETER

WAVEFORM

Tamb = +25°C

VCC = +5.0V

Tamb = –40°C to +85°C

VCC = +5.0V ±0.5V

UNIT

MIN

TYP

MAX

MIN

MAX

fMAX

Maximum clock frequency

180

250

150

MHz

tPLH

tPHL

Propagation delay

CPn to Qn, Qn

1.0

3.0

2.5

4.2

3.5

1.0

4.7

4.0

tPLH

tPHL

Propagation delay

Sn, Rn to Qn, Qn

1.0

3.4

2.9

4.9

4.5

1.0

6.2

5.2

tOSHL

tOSLH1

Output to Output skew

An or Bn to Yn

0.5

0.6

NOTE:

1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two separate outputs of the same

device. The specification applies to any outputs switching in the the same direction, either HIGH–to-LOW (tOSHL) or LOW-to-HIGH (tOSLH);

parameter guaranteed by design.

AC SETUP REQUIREMENTS

GND = 0V; tR = tF = 2.5ns; CL = 50pF, RL = 500Ω

SYMBOL

PARAMETER

WAVEFORM

LIMITS

UNIT

SYMBOL

PARAMETER

WAVEFORM

Tamb = +25°C

VCC = +5.0V

Tamb = –40°C to +85°C

VCC = +5.0V ±0.5V

UNIT

MIN

TYP

MIN

tsu (H)

tsu (L)

Setup time, high or low

Dn to CPn

2.6

2.4

1.4

2.6

2.4

th (H)

th (L)

Hold time, high or low

Dn to CPn

–1.4

tw (H)

tw (L)

CPn pulse width,

high or low

1.7

1.0

2.1

tw (L)

SDn, RDn pulse width, low

2.0

1.3

2.2

trec

Recovery time

SDn, RDn to CPn

2.1

1.4

2.4

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