
1
PS8519B 06/12/01
CLK
GND
V
CC
Q
OUT
D
IN
1
2
4
5
3
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SOTiny
Logic
Single Positive-Edge-Triggered
D-Type Flip-Flop
Features
High-speed: tPD = 1.8ns typical
Broad operating range: VCC = 1.8V3.6V
Power down high-impedance inputs/outputs
High output drive: ±24mA at 3V V
CC
Package: 5-pin space saving SOT23 and SC70
Description
The PI74ST1G79 is a Single Positive-Edge-Triggered D-Type FlipFlop that operates over the 1.8V to 3.6V VCC operating range.
Pericoms PI74ST series of products are produced using the
Companys advanced submicron technology.
PI74ST1G79
Block Diagram
Pinout
stupnItuptuO
KLCDQ
↑
↑
L
H
L
X
H
L
Q
0
Function Table
Notes:
H = HIGH Voltage Level
L = LOW Voltage Level
X = Dont Care
↑ = LOW-to-HIGH Transition
Q0 = Level of Q before the indicated steady-state input condi-
tions were established.
Pin Description
semaNniPnoitpircseD
KLCkcolC
D
NI
tupnI
Q
TUO
tuptuO
5-Pin
T,C
Recommended Operating Conditions
(1)
Note:
1. Unused inputs must be held HIGH or LOW. They may not float.
retemaraPnoitidnoC.niM.xaMstinU
V(egatloVylppuS
CC
)8.16.3
VV(egatloVtupnI
NI
)05.5
V(egatloVtuptuO
TUO
)0V
CC
erutarepmeTgnitarepO0458C°
dnaesiRtupnI
t(emiTllaF
rt,f
)
V
CC
,V8.1=
V2.0±V5.2
002
V/sn
V
CC
,V3.3=
V3.0±
001
CLK
D
IN
Q
OUT

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PI74ST1G79
SOTiny Logic Single
Positive-Edge-Triggered D-Type Flip-Flop
DC Electrical Characteristics (Over supply voltage and operating temperature ranges, unless otherwise specified)
Supply Voltage (VCC) ........................................ 0.5V to +4V
DC Input Voltage (VIN) ..................................... 0.5V to +6V
DC Output Voltage (V
OUT
) ............................... 0.5V to +6V
DC Input Diode Current (IIK) ..................... 50mA to 20mA
DC Output Diode Current (IOK) ................. 50mA to 20mA
DC Output Current (I
OUT
).........................................±50mA
DC VCC/GND Current (ICC/I
GND
) .............................. ±50mA
Storage Temperature (T
STG
) ....................... 65°C to +150°C
Junction Lead Temperature (IOS) ................................. 200°C
Power Dissipation SOT23 .......................................... 200mW
SC70 ............................................ 150mW
Absolute Maximum Ratings
Note:
Absolute maximum ratings are DC values beyond which the device
may be damaged or have its useful life impaired. The datasheet
specifications should be met, without exception, to ensure that the
system design is reliable over its power supply, temperature, and
output/input loading variables. Pericom does not recommend
operation outside datasheet specifications.
lobmySretemaraP
V
CC
)V(
snoitidnoC
T
A
C°52+=
T
A
C°04=
C°58+ot
stinU
.niM.pyT.xaM.niM.xaM
V
HI
leveLHGIH
egatloVtupnI
8.1
6.3-3.2
V57.0
CC
V07.0
CC
V57.0
CC
V07.0
CC
V
V
LI
leveLWOL
egatloVtupnI
8.1
6.3-3.2
V52.0
CC
V03.0
CC
V52.0
CC
V03.0
CC
V
HO
leveLHGIH
egatloVtuptuO
8.1
3.2
0.3
V
NI
V=
HI
I
HO
Aµ001=
7.1
2.2
9.2
97.1
92.2
99.2
7.1
2.2
9.2
3.2
0.3
0.3
I
HO
Am8=
I
HO
Am61=
I
HO
Am42=
9.1
4.2
3.2
31.2
17.2
55.2
9.1
4.2
3.2
V
LO
leveLWOL
egatloVtuptuO
8.1
3.2
0.3
V
NI
V=
HI
I
LO
Aµ001=
10.0
10.0
00.0
1.0
1.0
1.0
1.0
1.0
1.0
3.2
0.3
0.3
I
LO
Am8=
I
LO
Am61=
I
LO
Am42=
01.0
81.0
82.0
3.0
4.0
55.0
3.0
4.0
55.0
I
NI
egakaeLtupnI
tnerruC
6.3-00≤V
NI
≤ V5.51111
AµI
FFO
ffOrewoP
tnerruCegakaeL
0.0V
NI
Vro
TUO
V5.5=1111
I
CC
ylppuStnecseiuQ
tnerruC
6.3-8.1V
NI
DNG,V5.5=0.101

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PI74ST1G79
SOTiny Logic Single
Positive-Edge-Triggered D-Type Flip-Flop
AC Electrical Characteristics
lobmySretemaraPV
CC
)V(snoitidnoC
T
A
C°52+=TAC°58+otC°04=
stinU.oN.giF
.niM.pyT.xaM.niM.xaM
f
XAM
kcolCmumixaM
ycneuqerF
8.1
2.0±5.2
3.0±3.3
C
L
,Fp05=
R
L
005= Ω
001
521
051
zHM
1
3
t
HLP
,
t
LHP
yaleDnoitagaporP
QotKLC
TUO
8.1
2.0±5.2
3.0±3.3
C
L
,Fp51=
R
L
M1= Ω
5.2
0.2
5.1
3.3
1.2
5.1
3.4
8.2
1.2
5.2
0.2
4.1
8.4
1.3
3.2
sn
1
3
3.0±3.3
C
L
,Fp05=
R
L
005= Ω
0.28.27.36.10.4
1
3
t
S
,emiTputeS
DotKLC
NI
2.0±5.2
3.0±3.3
C
L
,Fp05=
R
L
005= Ω
5.2
0.2
1
4
t
H
emiTdloH
,
DotKLC
NI
2.0±5.2
3.0±3.3
C
L
,Fp05=
R
L
005= Ω
5.1
5.1
1
4
t
W
KLC,htdiWesluP
2.0±5.2
3.0±3.3
C
L
,Fp05=
R
L
005= Ω
0.3
8.2
1
4
Notes:
3. TA = +25°C, f= 1 MHz
4. CPD is defined as the value of the internal equivalent capacitance which is derived from dynamic operating current consumption
(I
CCD
) at no output loading and operating at 50% duty cycle (see Figure 2). CPD is related to I
CCD
dynamic operating current by
the expression: I
CCD
= (CPD)(VCC)(fIN) + (ICC static).
lobmySretemaraP.pyT.xaMstinUsnoitidnoC
C
NI
ecnaticapaCtupnI3
Fp
V
CC
V,nepO=
NI
VroV0=
CC
C
TUO
ecnaticapaCtuptuO4V
CC
V,V3.3=
NI
VroV0=
CC
C
DP
ecnaticapaCnoitapissiDrewoP
)4(
01
21
V
CC
V3.3=
V
CC
V0.5=
Capacitance
(3)

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PI74ST1G79
SOTiny Logic Single
Positive-Edge-Triggered D-Type Flip-Flop
AC Loading and Waveforms
Figure 1. AC Test Circuit
Figure 2. I
CCD
Test Circuit
V
CC
CL includes load and stray capacitance
Input PRR = 1.0 MHz; t
W
= 500ns
R
L
C
L
CLK
D
IN
Q
OUT
V
CC
Input = AC Waveform; tr = tf = 1.8ns;
PRR = 10 MHz; Duty Cycle = 50%
A
CLK
D
IN
Q
OUT
V
CC
V
OH
GND
D
IN
CLK
Q
OUT
t
W
t
r
= 3ns t
f
= 3ns
V
OL
GND
90%
t
PLH
10%
50% 50%
90%
10%
50%50%
90% 90%
10% 10%
V
CC
t
PHL
V
CC
GND
Data
Input
CLK
t
H
t
S
t
r
t
f
= t
r
<1.2ns
GND
90%
10%
90%
50% 50%
10%
50% 50%
90% 90%
10% 10%
V
CC
t
WH
t
WL
Figure 3. AC Waveforms
Figure 4. AC Waverforms

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PI74ST1G79
SOTiny Logic Single
Positive-Edge-Triggered D-Type Flip-Flop
.102
.118
BSC
0.60
12 3
.000
.005
0.00
0.15
.014
.019
0.35
0.50
54
1.50
1.75
.059
.068
0.10
.023
.004
1.45
MAX.
SEATING
PLANE
.057
0º - 10º
1.90
.075
.037
BSC
2.60
3.00
0.95
.110
.118
2.80
3.00
X.XX
X.XX
Datum "A"
DENOTES DIMENSIONS
IN MILIMETERS
5-Pin SOT23 Package (T)
Pericom Semiconductor Corporation
2380 Bering Drive San Jose, CA 95131 1-800-435-2336 Fax (408) 435-1100 http://www.pericom.com
Ordering Information
5-Pin SC70 Package (C)
traPegakcaP-niPgnitkraMpoTegnaRgnitarepO
XT97G1TS47IP32TOS-niP-5F4LCº58otCº04
XC97G1TS47IP07CS-niP-5F4LCº58otCº04
GUAGE PLANE
SEATING PLANE
SEATING PLANE
DENOTES DIMENSIONS
IN MILLIMETERS
Notes:
1. Controlling dimensions in millimeters
2. Ref: JEDEC MO-203AA
BSC
VIEW A
BSC
REV
0
˚-8˚
4˚-10
˚
0.15
.321
0.42.017
.010
.018
0.26
0.46
.006
3
45
21
.011
.0260.65
BSC
.083
2.10
BSC
.049
1.25
BSC
.051
1.30
BSC
.079 2.00
0.15
0.30
MAX
.004
0.10
00
XXX
XXX
1.10