Features
ST1G3236
1-bit dual supply bus transceiver level translator
with A-side series resistor
■ High speed: t
■ Low power dissipation:
I
= I
CCA
■ Balanced propagation delays:
t
PLH
■
Power-down protection on inputs and outputs
■ 26Ω series resistor on A-side outputs
■ Operating voltage range:
–V
–V
■
Latch-up performance exceeds 100mA per
CCB
≅ t
PHL
(Opr) = 1.2V to 3.6V
CCA
(Opr) = 1.2V to V
CCB
= 4.0ns (Max.) at TA = 85°C
PD
= 5μA(Max.) at TA = 85°C
CCA
JESD 78, Class II
■ ESD performance exceeds JESD22
– 2000-V Human-body model (A114-A)
DFN6L
Description
The ST1G3236 is a dual supply low voltag e
CMOS 1-bit bus Transceiver fabricated with submicron silicon gate and five-layer metal wiring
C2MOS technology. Designed for use as an
interface between a 3.3V bus and a 2.5V or 1.2V
bus in mixed supply systems of 3.3V/1.2V,
3.3V/2.5V and 2.5V/1.8V, the ST1G3236 achie ves
high speed operation while maintaining lo w power
dissipation. V
1.2V to 3.6V respective ly. The DIR pin is designed
to track V
CCB
The device is intended for two-way asynchr onous
communication between data buses and the
direction of data transmission is determined by
DIR inputs.
CCA
.
and V
can be powered from
CCB
All inputs are equipped with protection circuits
against static discharge, giving them 2kV ESD
immunity and transient excess voltage.
Table 1. Device summary
Order code Package Packaging
ST1G3236DTR DFN6L (1.2x1mm) Tape and Reel
July 2007 Rev 1 1/19
www.st.com
19
Contents ST1G3236
Contents
1 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Wa veforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
ST1G3236 Device summary
1 Device summary
1.1 Pin settings
Figure 1. Logic diagram
GND
DIR
B1
V
V
CCB
Figure 2. Pin connection (top through view)
V
GND
CCA
A1
1
2
3
DFN6L
A1
CCA
CS000101
V
6
CCB
5
DIR
B1
4
1.2 Pin description
Table 1. Pin description
Pin N° Symbol Name and function
1V
2 GND Ground (0V)
3 A1 Data Inputs/Outputs
4 B1 Data Inputs/Outputs
5 DIR Directional controls
6V
CCA
CCB
Positive supply voltage
Positive supply voltage
3/19
Pin connection ST1G3236
2 Pin connection
Figure 3. Input and output equivalent circuit
V
V
CCB / CCA
Overvolt.
Control Inputs
ESD
protection
Table 2. Truth table
Dir input
An/Bn
R
ESD
protection
GND GND GNDGND GND GND
S
Function
Bus A Bus B
control
= (0Ω / 26Ω)
Bn/An
CS157401
L Output Input
H Input Output
4/19
ST1G3236 Maximum rating
3 Maximum rating
Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any ot her conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may aff ect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.
Table 3. Absolute maximum ratings
Symbol Parameter Value Unit
V
V
V
V
I
I
T
CCA
CCB
V
I/OA
I/OB
I
IK
I
OK
I
OA
I
OB
CCA
CCB
P
stg
T
Output supply voltage -0.5 to 4.6 V
Input supply voltage -0.5 to + 4.6 V
DC input voltage -0.5 to +4.6 V
I
DC output voltage -0.5 to V
DC output voltage -0.5 to V
+ 0.5 V
CCA
+ 0.5 V
CCB
DC input diode current − 20 mA
DC output diode current − 50 mA
DC output current ± 50 mA
DC output current ± 50 mA
DC V
DC V
Power dissipation 200 mW
d
or ground current ± 100 mA
CCA
or ground current ± 100 mA
CCB
Storage temperature -65 to +150 °C
Lead temperature (10 sec) 260 °C
L
3.1 Recommended operating conditions
Table 4. Recommended operating conditions
Symbol Parameter Value Unit
V
V
CCB
CCA
Supply voltage 1.2 to 3.6 V
(1)
Supply voltage 1.2 to V
5/19
CCA
V
Maximum rating ST1G3236
Table 4. Recommended operating conditions
Symbol Parameter Value Unit
V
Input voltage (DIR) 0 to V
I
V
V
T
dt/dv
1. V
2. VIN from 0.8V to 2.0V at VCC = 3.0V
I/O voltage 0 to V
I/OA
I/O voltage 0 to V
I/OB
Operating temperature -40 to 85 °C
op
(2)
Input Rise and Fall Time
must be lower than V
CCB
CCA
CCB
CCA
CCB
V
= 3.0 to 3.6V 0 to 10 ns/V
CCB
= 2.3 to 2.7V 0 to 20 ns/V
V
CCB
= 1.2 to 1.95V 0 to 100 ns/V
V
CCB
V
V
V
6/19
ST1G3236 Electrical characteristics
4 Electrical characteristics
Table 5. DC specification for V
Test co ndition Value
Symbol Parameter
High level
V
IHA
input voltage
(A1)
Low level
ILA
input voltage
V
(A1)
High level
V
OHA
output
voltage
Low level
V
OLA
output
voltage
Input
I
leakage
IA
current
V
CCB
V
(V)
1.2 to
1.2 to
V
CCA
to 2.7
2.7 to
1.2 to
1.2 to
CCA
to 2.7
V
2.7 to
1.2 to
1.2 to
V
CCA
1.2 to
1.2 to
V
CCA
2.7 3.3
1.4 2.7
CCA
(V)
1.95
1.95
3.6
1.95
1.95
3.6
3.6V
3.0 I
2.3 I
1.65 I
1.4 I
1.2 I
3.6V
3.0 IO=-10mA 0.55 0.55
2.3 I
1.65 I
1.4 I
1.2 I
CCA
TA = 25 °C -40 to 85 °C
Unit
Min Max Min Max
0.65
V
CCA
1.6 1.6
0.65
V
CCA
V
22
0.35V
CCA
0.7 0.8
0.35
V
CCA
V
0.8 0.8
-
V
=-100μAV
I
O
=-10mA 2.5 2.5
O
=-6mA 1.8 1.8
O
=-4mA 1.25 1.25
O
=-2mA 1.1 1.1
O
=-1mA 0.95 0.95
O
=-100μA0.2 0.2
I
O
=-6mA 0.40 0.40
O
=-4mA 0.40 0.40
O
=-2mA 0.30 0.30
O
=-1mA 0.25 0.25
O
=V
CCA
V
I
or GND
V
=3.6V
IA
or GND
CCA
- 0.2
± 0.5 ± 5 μA
± 0.5 ± 5 μA
CCA
0.2
V
V
7/19
Electrical characteristics ST1G3236
Table 5. DC specification for V
Test co ndition Value
Symbol Parameter
Power OFF
I
OFF
leakage
current
Quiescent
I
CCtA
supply
current
Maximum
CCtA
quiescent
supply
ΔI
current/input
V
CCB
(V)
V
CCA
(V)
00
1.2V
1.2 to
3.6V
1.2 to
3.6V
3.6
2.7V 3.3V V
1.8 3.3
1.8 2.7
(continued)
CCA
V
=GND
IA
to 3.6V
=GND
V
IB
to 3.6V
DIR=GND
to 3.6V
V
IA=VCCA
or GND
V
IB=VCCB
or GND
DIR =A to
B
=V
IA
to 0.6V
=V
V
IB
or GND
CCA
CCB
= 25 °C -40 to 85 °C
T
A
Min Max Min Max
± 1.0 ± 10 μA
0.5 5 μA
Unit
0.75 μA
Table 6. DC specification for V
Test condition Value
Symbol Parameter
High level
V
IHB
input voltage
(A1)
Low level input
ILB
voltage
V
(B1, DIR)
V
V
CCB
(V)
1.2
V
1.8 1.2 1.2
3.6V
2.5 1.6 1.6
3.3 2 2
1.2
V
1.8 0.6 0.6
3.6V
2.5 0.7 0.7
3.3 1.0 1.0
CCA
(V)
CCB
to
CCB
to
CCB
T
= 25 °C -40 to 85 °C
A
Min Max Min Max
0.65
V
CCB
0.35
V
CCB
0.65
V
CCB
0.35
V
Unit
V
CCB
V
8/19
ST1G3236 Electrical characteristics
Table 6. DC specification for V
Test condition Value
Symbol Parameter
IB
High level
output voltage
Low level
output voltage
Input leakage
current
Quiescent
supply current
V
OHB
V
OLB
I
I
CCtB
Maximum
quiescent
ΔI
CCtB
supply
current/input
(B1, DIR)
V
1.2 to
1.2 to
1.2 to
V
V
CCB
(V)
3.6V
3.0
V
2.3 I
3.6V
1.65 I
1.4 I
1.2 I
3.6V
3.0
V
2.3 I
3.6V
1.65 I
1.4 I
1.2 I
2.7 3.3
1.4 2.7
1.2 to
CCA
2.7 3.3 V
1.83.3 ---
1.82.7 ---
CCA
(V)
CCB
to
CCB
to
3.6
CCB
(continued)
TA = 25 °C -40 to 85 °C
Min Max Min Max
I
=-
O
100μA
=-
I
O
10mA
=-6mA 1.8 1.8
O
=-4mA 1.25 1.25
O
=-2mA 1.1 1.1
O
=-1mA 0.95 0.95
O
I
=-
O
100μA
=-
I
O
10mA
=-6mA 0.40 0.40
O
=-4mA 0.40 0.40
O
=-2mA 0.30 0.30
O
=-1mA 0.25 0.25
O
VIB
=VCC or
GND
V
IB
=3.6V or
GND
V
IA=VCC
or
A
GND
V
IB=VCC
or
B
GND
DIR =B
to A
=V
IB
CCB
---
to 0.6V
V
IA
=V
CCB
or GND
V
-
CCB
0.2
2.5 2.5
0.2 0.2
0.55 0.55
± 0.5 ± 5 μA
± 0.5 ± 5 μA
0.5 5 μA
Unit
V
CCB
-0.2
0.75 μA
V
V
9/19
Electrical characteristics ST1G3236
Table 7. AC electrical characteristics
Test condition Value
Symbol Parameter
t
Propagation delay
PLH
t
t
t
t
PZL tPZH
t
PZL tPZH
time An to Bn
PHL
Propagation delay
PLH
time Bn to An
PHL
Output enable time
DIR to An
Output enable time
DIR to Bn
V
CCB
(V)
V
CCA
(V)
1.8 ± 0.15 2.5 ± 0.2
= 30 pF
C
1.8 ± 0.15 3.3 ± 0.3 1.0 3.5
L
R
L
= 500Ω
-40 to 85 °C
Min Typ Max
1.0 4
2.5 ± 0.2 3.3 ± 0.3 1.0 2.8
1.8 ± 0.15 2.5 ± 0.2
1.8 ± 0.15 3.3 ± 0.3 1.0 3.4
C
L
= 10 pF
1.0 3.8
2.5 ± 0.2 3.3 ± 0.3 1.0 2.7
1.8 ± 0.15 2.5 ± 0.2
= 30 pF
C
1.8 ± 0.15 3.3 ± 0.3 1.0 4
L
RL = 500 Ω
1.0 4.5
2.5 ± 0.2 3.3 ± 0.3 1.0 3
1.8 ± 0.15 2.5 ± 0.2
1.8 ± 0.15 3.3 ± 0.3 1.0 4
C
L
= 10 pF
1.0 4.5
2.5 ± 0.2 3.3 ± 0.3 1.0 3
1.8 ± 0.15 2.5 ± 0.2
C
L
R
L
= 30 pF
= 500Ω
6
2.5 ± 0.2 3.3 ± 0.3 6
1.8 ± 0.15 2.5 ± 0.2
C
L
R
L
= 30 pF
= 500Ω
6
2.5 ± 0.2 3.3 ± 0.3 6
Unit
ns
ns
ns1.8 ± 0.15 3.3 ± 0.3 6
ns1.8 ± 0.15 3.3 ± 0.3 6
Table 8. Capacitance characteristics
Test co ndition Valu e
Note: 1 C
Symbol Parameter
C
C
C
PD
Input capacitance open open 6 pF
INB
I/O capacitance 2.5 3.3 6 pF
I/O
Power dissipation
PD
capacitance
is defined as the value of the IC’s internal equivalent capacitance which is calculated
V
V
CCB
(V)
CCA
(V)
2.5 3.3 f = 10MHz 29 pF
1.8 3.3 29 pF
from the operating current consumption without loa d. (Ref er to Test Circuit). A ver age current
can be obtained by the following equation. I
10/19
= 25 °C
T
A
Min Typ Max Min Max
= CPD x VCC x fIN + ICC/4 (per circuit)
CC(opr)
-40 to 85
°C
Unit
ST1G3236 Test circuit
5 Test circuit
Figure 4. Test circuit
V
CC
6V or 2V
CC
Open
GND
Pulse
generator
D.U. T.
R1
Table 9. T est circuit
Test Switch
t
, t
PLH
PHL
R
T
= Z
of pulse generator (typically 50Ω)
OUT
R
T
CL =30pF ; RL =500
Ω
C
R
L
L
SC116901
Open
11/19
Waveforms ST1G3236
6 Waveforms
Figure 5. Waveform - propagation dela y (f=1 MHz, 50% duty cycle)
Table 10. Waveform symbol value
Symbol
V
IH
V
M
V
X
V
Y
V
CC
3.0 to 3.6V 2.3 to 2.7V 1.65 to 1.95V
V
CC
V
CC
V
CC
1.5V VCC/2 VCC/2
VOL +0.3V VOL +0.15V VOL +0.15V
VOH -0.3V VOH -0.15V VOH -0.15V
12/19
ST1G3236 Waveforms
Figure 6. Waveform - Output Enable and Disable timing (f=1 MHz, 50% duty cycle)
nG
nAn
nBn
nAn
nBn
t
PZH
t
PZL
90%
2.0ns
V
M
10%
V
M
V
M
2.0ns
10%
V
90%
V
M
t
PHZ
t
PLZ
IH
GND
V
OH
V
Y
GND
3.0V or V
V
X
V
OL
CC
SC132311
13/19
Package mechanical data ST1G3236
7 Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK®
packages. These packages have a Lead-free second level interconnect . The category of
second level interconnect is marked on the package and on the inner box label, in
compliance with JEDEC Standard JESD97. The maximum ratings related t o soldering
conditions are also marked on the inner box label. ECOPACK is an ST trademark.
ECOPACK specifications are available at: www.st.com.
Figure 7. DFN6 (1.2x1mm) package outline
Table 11. DFN6L (1.2x1mm) mechanical data
Symbol
Min Typ Max
A 0.45 0.50 0.55
A1 0 0.02 0.05
A3 0.127
b 0.15 0.20 0.25
D 1.15 1.20 1.25
E 0.95 1 1.05
e0.40
L 0.30 0.35 0.40
L1 0.40 0.45 0.50
14/19
millimeters
ST1G3236 Package mechanical data
Figure 8. Recommended footprint
Figure 9. Tape and reel information
15/19
Package mechanical data ST1G3236
Figure 10. Reel for carrier tape information
16/19
ST1G3236 Package mechanical data
Figure 11. Reel for carrier tape information
17/19
Revision history ST1G3236
8 Revision history
Table 12. Revision history
Date Revision Changes
25-July-2007 1 First release.
18/19
ST1G3236
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