PI74ST1G125
SOTiny
™
Gate ST
Buffer with 3-State Output
Features
• High-speed: t
PD
= 1.8ns typical
• Broad operating range: V
CC
= 1.8V –3.6V
• Power down high-impedance inputs/outputs
• High output drive: ±24mA at 3V V
CC
• Packaging:
- 5-pin SOT23 (T)
• Pb-free & Green:
- 5-pin SC70 (C)
Description
The PI74ST1G125 is a buffer with 3-state output that operates over
the 1.8V to 3.6V V
CC
operating range.
Pericom’s PI74ST series of products are produced using the
Company’s advanced submicron technology.
Pin Configuration
Block Diagram
OE
5
V
CC
5-Pin
T,C
OE
1
A
IN
2
GND
3
4
Y
OUT
AIN
YOUT
Pin Description
Pin Name
A
IN
OE
Y
OUT
Description
Input
Input
Output
Recommended Operating Conditions
(1)
Parameter
Supply Voltage (V
CC
)
Input Voltage (V
IN
)
Output Voltage (V
OUT
)
Operating Temperature
V
CC
= 1.8V,
2.5V ±0.2V
V
CC
= 3.3V
±0.3V
Condition
Min. Max. Units
1.8
0
0
-40
0
0
3.6
5.5
V
CC
85
20
ns/V
10
ºC
V
Function Table
Inputs
OE
L
L
H
Notes:
1. H = HIGH Logic Level
L = LOW Logic Level
X = Don’t Care
Z = HIGH Impedance State
Outputs
A
IN
L
H
X
Y
OUT
L
H
X
Input Rise and Fall
Time (t
r
, t
f
)
Note:
1. Unused inputs must be held HIGH or LOW. They may not float.
1
PS8521F
05/10/05
PI74ST1G125
SOTiny
™
Gate ST
Buffer with 3-State Output
Absolute Maximum Ratings
Supply Voltage (V
CC
) ................................................ –0.5V to +4V
DC Input Voltage (V
IN
).............................................. –0.5V to +6V
DC Output Voltage (V
OUT
) ........................................ –0.5V to +6V
DC Input Diode Current (I
IK
)................................–50mA to 20mA
DC Output Diode Current (I
OK
)............................–50mA to 20mA
DC Output Current (I
OUT
) .................................................. ±50mA
DC V
CC
/GND Current (I
CC
/I
GND
)...................................... ±50mA
Storage Temperature (T
STG
) ................................ –65°C to +150°C
Junction Lead Temperature (IOS) .......................................... 200°C
Power Dissipation
SOT23 ........................................... 200mW
SC70 ............................................ 150mW
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.
DC Electrical Characteristics
(Over supply voltage and operating temperature ranges, unless otherwise specified)
Symbol
V
IH
V
IL
Parameter
HIGH Level
Input Voltage
LOW Level Input
Voltage
V
CC
(V)
1.8
2.3-3.6
1.8
2.3-3.6
1.8
2.3
3.0
2.3
3.0
3.0
1.8
2.3
3.0
2.3
3.0
3.0
0-3.6
0.0
1.8-3.6
1.8-3.6
V
IN
= V
IL
V
IN
= V
IH
I
OH
= -100µA
I
OH
= -8mA
I
OH
= -16mA
I
OH
= -24mA
I
OL
= 100µA
I
OH
= 8mA
I
OH
= 16mA
I
OH
= 24mA
V
IN
= 5.5V, GND
V
IN
or V
OUT
= 5.5V
V
IN
= 5.5V, GND
V
IN
= V
IH
or V
IL
V
O
=
V
CC
or GND
-1
-1
1.7
2.2
2.9
1.9
2.4
2.3
1.79
2.29
2.99
2.13
2.71
2.55
0.01
0.01
0.00
0.10
0.18
0.28
0.1
0.1
0.1
0.3
0.4
0.55
1
1
2.0
±1
-1
-1
Conditions
Min.
0.75V
CC
0.70V
CC
0.25V
CC
0.30V
CC
1.7
2.2
2.9
1.9
2.4
2.3
0.1
0.1
0.1
0.3
0.4
0.55
1
1
µA
20
±10
V
T
A
= +25ºC
Typ.
Max.
T
A
= -40º C to
+85ºC
Min.
0.75V
CC
0.70V
CC
0.25V
CC
0.30V
CC
Max
Units
V
OH
HIGH Level
Output Voltage
V
OL
LOW Level Out-
put Voltage
I
IN
I
OFF
I
CC
I
OZ
Input Leakage
Current
Power Off Leak-
age Current
Quienscent Sup-
ply Current
3-State Output
Leakage
2
PS8521F
05/10/05
PI74ST1G125
SOTiny
™
Gate ST
Buffer with 3-State Output
AC Electrical Characteristics
Symbol
t
PLH
t
PHL
t
PLH
t
PHL
Parameter
Propagation
Delay
Propagation
Delay
V
CC
(V)
1.8
2.5±0.2
3.3±0.3
3.3±0.3
Conditions
C
L
= 15pF,
R
L
= 1MΩ
C
L
= 50pF,
R
L
= 500Ω
C
L
= 50pF,
R
D
= 500Ω,
R
U
= 500Ω,
S
1
= GND for t
PZH
S
1
= V
IN
for t
PZL
V
IN
= 2 x V
CC
C
L
= 50pF,
R
D
= 500Ω,
R
U
= 500Ω,
S
1
= GND for t
PHZ
S
1
= V
IN
for t
PLZ
V
IN
= 2 x V
CC
T
A
= +25ºC
Min.
2.0
0.8
0.5
1.5
Typ.
2.8
1.8
1.3
2.6
Max.
3.7
2.5
2.0
3.4
T
A
= -40º C to +85ºC
Min.
2.0
0.8
0.5
1.5
Max
4.1
2.8
2.2
3.7
Units
Fig.
No.
1
3
1
3
t
PZL
t
PZH
Output Enable
Time
1.8
2.5±0.2
3.3±0.3
2
1.5
1.5
5.8
4.1
3.1
7.5
5.4
4.1
2
1.5
1.5
8.3
5.9
4.5
ns
1
3
t
PLZ
t
PHZ
Output Disable
Time
1.8
2.5±0.2
3.3±0.3
2
1.5
1.5
4.9
3.6
2.8
5.9
4.8
3.4
2
1.5
1.0
6.5
5.3
3.7
1
3
C
IN
C
OUT
C
PD
Input Capaci-
tance
Output Capaci-
tance
Power Dissipa-
tion Capacitance
V
IN
= 0
V
IN
= 0
3.3
Note 3
4
8
17
pF
2
Notes:
3.
C
PD
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). C
PD
is related to I
CCD
dynamic operating current by the expression: I
CCD
=
(C
PD
)(V
CC
)(f
IN
) + (I
CC
static).
3
PS8521F
05/10/05
PI74ST1G125
SOTiny
™
Gate ST
Buffer with 3-State Output
AC Loading and Waveforms
V
CC
OE Input
Input
C
L
RU
V
IN
OPEN
GND
Input
t
r
= 3ns
90%
50%
t
r
= 3ns
90%
50%
10%
V
CC
Output
10%
RD
Output
t
W
t
PLH
50%
GND
V
OH
t
PHL
50%
C
L
includes load and stray capacitance
Input PRR = 1.0 MHz; t
W
= 500ns
V
Ol
Figure 1. AC Test Circuit
90%
t
r
= 3ns
t
f
= 3ns
90%
50%
V
CC
V
CC
OE Input
50%
10%
t
PZL
10%
GND
t
PLZ
50%
A
V
TRI
Output
V
OH
+0.3V
t
PHZ
V
OL
Input
OE
Output
Output
t
PZH
50%
V
OH
V
OH
–0.3V
V
TRI
Input = AC Waveform; t
r
= t
f
= 1.8ns;
PRR = 10 MHz; Duty Cycle = 50%
Figure 2. I
CCD
Test Circuit
Figure 3. AC Waveforms
4
PS8521F
05/10/05
Microcontroller MCU
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