SGS Thomson Microelectronics 74V1T79STR, 74V1T79CTR Datasheet

1/9July 2001

■ HIGH SPEED:

f

MAX

= 180MHz (TYP.) at VCC = 5V

t

CK-Q

= 3.9ns (TYP.) at VCC = 5V

■ LOW POWER DISSIPATION:

I

CC

= 1µA(MAX.) at TA=25°C

■ COMPATIBLE WITH TTL OUTPUTS:

V

IH

= 2V (MIN), VIL = 0.8V (MAX)

■ POWER DOWN PROTECTION ON INPUT S

■ SYMMETRICAL OUTPUT IMPEDANCE:

|I

OH

| = IOL = 8mA (MIN) at VCC = 4.5V

■ BALANCED PROPAGATION DELAYS:

t

PLH

≅ t

PHL

■ OPERATING VOL TAGE RANGE:

V

CC

(OPR) = 4.5V to 5.5V

■ IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74V1T79 is an advanc ed high-speed CM OS
SINGLE POSITIVE EDGE TRIGGERED D-TYPE
FLIP-FLOP fabricated with sub-micron silicon
gate and double-layer metal wiring C

2

MOS

technology. It is designed to operate from 4.5V to

5.5V, making this device ideal for portable
applications.
This D-Type flip-flop is controlled by a clock input
(CK). On the positive transition of the clock, the Q
output will be set to the logic state t hat wa s s etup
at th e D input.

Following the hold time interval, data at the D input
can be changed without affecting the level at the
output. Power down protection is provided on
inputs and 0 to 7V can be accepted on inputs with
no regard to t he supply voltage. This device can
be used to interface 5V to 3V systems.
It’s available in the commercial and extended
temperature range.
All inputs and output are equippe d with prot ection
circuits against stati c disc harge , giving t hem ES D
immunity and transient excess voltage.

74V1T79

SINGLE POSITIVE EDGE TRIGGERED

D-TYPE FLIP-FLOP

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE T & R

SOT23-5L 74V1T79STR

SOT323-5L 74V1T79CTR

SOT323-5LSOT23-5L

74V1T79

2/9

INPUT EQUIVALENT CIRCUIT PIN DESCRIPTION

TRUTH TABLE

ABSOLUTE MAXIMUM RATINGS

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied

RECOMMENDED OPERATING CONDITIONS

1) VIN from 0.8V to 2V

PIN No SYMBOL NAME AND FUNCTION

1 D Data Input
2CK

Clock Input (Positive

Edge)
4 Q Flip-Flop Output
3 GND Ground (0V)
5

V

CC

Positive Supply Voltage

DCKQ

LL

HH

LQn

HQn

Symbol Parameter Value Unit

V

CC

Supply Voltage

-0.5 to +7.0 V

V

I

DC Input Voltage

-0.5 to +7.0 V

V

O

DC Output Voltage -0.5 to VCC + 0.5

V

I

IK

DC Input Diode Current

- 20 mA

I

OK

DC Output Diode Current

± 20 mA

I

O

DC Output Current

± 25 mA

I

CC

or I

GND

DC VCC or Ground Current

± 50 mA

T

stg

Storage Temperature

-65 to +150 °C

T

L

Lead Temperature (10 sec)

300 °C

Symbol Parameter Value Unit

V

CC

Supply Voltage

4.5 to 5.5 V

V

I

Input Voltage

0 to 5.5 V

V

O

Output Voltage 0 to V

CC

V

T

op

Operating Temperature

-55 to 125 °C

dt/dv

Input Rise and Fall Time (note 1) (V

CC

= 5.0 ± 0.5V)

0 to 20 ns/V

74V1T79

3/9

DC SPECIFICATIONS

AC ELECTRICAL CHARACTERISTICS (Input t

r

= tf = 3ns)

(*) Vol tage range is 5.0V ± 0.5V

CAPACITIVE CHARACTERISTICS

1) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without

load. (R ef er to Test Circuit). Average operating current can be obtained by t he following equation. I

CC(opr)

= CPD x VCC x fIN + I

CC

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

V

IH

High Level Input
Voltage

4.5 to

5.5

222V

V

IL

Low Level Input
Voltage

4.5 to

5.5

0.8 0.8 0.8 V

V

OH

High Level Output
Voltage

4.5

IO=-50 µA 4.4 4.5 4.4 4.4 V

4.5

I

O

=-8 mA 3.94 3.8 3.7

V

OL

Low Level Output
Voltage

4.5

IO=50 µA 0.0 0.1 0.1 0.1 V

4.5

I

O

=8 mA 0.36 0.44 0.55

I

I

Input Leakage
Current

0 to

5.5

V

I

= 5.5V or GND

± 0.1 ± 1.0 ± 1.0 µA

I

CC

Quiescent Supply
Current

5.5

V

I

= VCC or GND

11020µA



I

CC

Additional Worst
Case Supply
Current

5.5

One Input at 3.4V,
other input at V

CC

or GND

1.35 1.5 1.5 mA

Symbol Parameter

Test Condition Value

Unit

V

CC

(V)

C

L

(pF)

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

t

PLH tPHL

Propagation Delay
Time CK to Q

5.0 (*) 15 3.9 5.5 1.0 6.5 1.0 7.5 ns

5.0 (*) 50 4.5 6.5 1.0 7.5 1.0 8.5

t

W

CK Pulse Width,
HIGH or LOW

5.0 (*) 3.0 3.0 3.0 ns

t

s

Setup Time D to
CK, HIGH or LOW

5.0 (*) 2.0 2.0 2.0 ns

t

h

Hold Time D to CK,
HIGH or LOW

5.0 (*) 1.0 1.0 1.0 ns

f

MAX

Maximum Clock
Frequency

5.0 (*) 50 120 180 120 120 MHz

Symbol Parameter

Test Condition Value

Unit

T

A

= 25°C

-40 to 85°C -55 to 125°C

Min. Typ. Max. Min. Max. Min. Max.

C

IN

Input Capacitance

4101010pF

C

PD

Power Dissipation
Capacitance
(note 1)

8pF