ST ST1G3236 User Manual
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
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