ST2G3236QTR ,2-bit dual supply bus transceiver level translator with a side series resistorFeatures■ High speed:–t = 6.2 ns (max) at T = 85 °CPD A–V = 1.8 VCCB–V = 3.3 VCCA■ Low power dissip ..
ST2L05-3300 ,VERY LOW QUIESCENT CURRENT DUAL VOLTAGE REGULATORST2L05VERY LOW QUIESCENT CURRENTDUAL VOLTAGE REGULATOR
ST2G3236QTR
2-bit dual supply bus transceiver level translator with a side series resistor
July 2010 Doc ID 12942 Rev 4 1/22
ST2G32362-bit dual supply bus transceiver level translator
with side series resistor
Features High speed:
–tPD = 6.2 ns (max) at TA = 85 °C
–VCCB = 1.8 V
–VCCA = 3.3 V Low power dissipation:
–ICCA = ICCB = 5 µA (max) at TA = 85 °C Symmetrical output impedance:
–|IOHA| = IOLA = 7 mA min at VCCA = 2.75 V;
VCCB = 1.65 V or 2.3 V
–|IOHB| = IOLB = 2 mA min at VCCA = 2.3 V
or 3.0 V; VCCB = 1.65 V Balanced propagation delays:
–TPLH ≈ TPHL Power-down protection on inputs and outputs 26 Ω series resistor on A side Operating voltage range:
–VCCA (OPR) = 1.4 V to 3.6 V
–VCCB (OPR) = 1.4 V to 3.6 V Max data rates: 380 Mbps (1.8 V to 3.3 V translation) 260 Mbps (<1.8 V to 3.3 V translation) 260 Mbps (translate to 2.5 V) 210 Mbps (translate to 1.5 V) Latch-up performance exceeds 500 mA
(JESD17) ESD performance: HBM > 2 kV (MIL STD 883 method 3015) MM > 200 V
DescriptionThe ST2G3236 is a dual supply, low-voltage
CMOS 2-bit bus transceiver produced with sub-
micron silicon gate and five-layer metal wiring 2 MOS technology. Designed for use as an
interface between a 3.3 V bus and a 2.5 V or
1.8 V bus in mixed 3.3 V/1.8 V , 3.3 V/2.5 V and
2.5 V/1.8 V supply systems, it achieves high
speed operation while maintaining the CMOS low
power dissipation.
This IC is intended for two-way asynchronous
communication between data buses, and the
direction of data transmission is determined by
DIR inputs. The A-port interfaces with the 3 V bus,
and the B-port with the 2.5 V and 1.8 V bus.
All inputs are equipped with protection circuits to
protect against static discharge, giving them 2 kV
of ESD immunity and transient excess voltage.
Table 1. Device summary
Contents ST2G32362/22 Doc ID 12942 Rev 4
Contents Logic diagram and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 51.1 T ruth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Application notes and recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Recommended power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Recommended power-down sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin connections and descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72.1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.1 DC electrical characteristics for V CCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4.2 DC electrical characteristics for V CCB . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 AC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.4 Capacitance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
ST2G3236 List of tables
Doc ID 12942 Rev 4 3/22
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 6. DC specification for VCCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Table 7. DC specification for VCCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Table 8. AC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 9. Capacitance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 10. Test values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 11. Waveform symbol value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Table 12. QFN10L (1.8 mm x 1.4 mm) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 13. Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of figures ST2G3236
4/22 Doc ID 12942 Rev 4
List of figures
Figure 1. Logic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Pin connections (top through view). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 5. Waveform - propagation delay (f = 1 MHz, 50% duty cycle). . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 6. Waveform - output enable and disable time (f = 1 MHz, 50% duty cycle) . . . . . . . . . . . . . 15
Figure 7. QFN10L (1.8 mm x 1.4 mm) package mechanical outline . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 8. QFN10L (1.8 mm x 1.4 mm) footprint recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 9. QFN10L (1.8 mm x 1.4 mm) carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 10. QFN10L (1.8 mm x 1.4 mm) reel information - back view . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 11. QFN10L (1.8 mm x 1.4 mm) reel information - front view. . . . . . . . . . . . . . . . . . . . . . . . . . 20
ST2G3236 Logic diagram and I/O equivalent circuit
Doc ID 12942 Rev 4 5/22 Logic diagram and I/O equivalent circuit
Figure 1. Logic diagram
Figure 2. I/O equivalent circuit
Logic diagram and I/O equivalent circuit ST2G3236
6/22 Doc ID 12942 Rev 4
1.1 Truth table
1.2 Application notes and recommendations Once the device is enabled (OE = low), even if the input is floating, output may be either
on high or low logic level only, not in a high-impedance state. Output is in a high-
impedance state only when OE = high.
2. Unused I/O channel should be connected to GND or to the corresponding supply.
3. The OE and DIRn block is powered by VCCB and these input logic levels are referenced
to VCCB. The OE and DIRn input high level can be equal to or greater than VCCB, up to
VIHB max.
4. Any input high level can be higher than the corresponding input supply voltage, up to
VIHA max (VIHB max).
Example:
VCCA = 1.8 V , VCCB = 2.6 V, OE = Low, DIRn = Low (B → A direction)
==> if I/O Bn = 3 V, I/O An = 1.8 V
5. If VCCA = VCCB = 0 V and OE = 0 V, An and Bn are isolated even if there is a signal on
An or Bn.
6. If the ST2G3236QTR is used in a UART application, there is a possibility of floating
input condition if the cable is disconnected, therefore a pull-down resistor is
recommended on the input port.
1.3 Recommended power-up sequence Apply power to either VCC.
2. Apply power to the OE input and to the respective data inputs. This may occur at the
same time as step 1.
3. Apply power to the other VCC.
4. Drive the OE input LOW to enable the device.
1.4 Recommended power-down sequence Drive the OE input HIGH to disable the device.
2. Remove power from either VCC.
3. Remove power from the other VCC.
Table 2. Truth table
ST2G3236 Pin connections and descriptions
Doc ID 12942 Rev 4 7/22 Pin connections and descriptions
2.1 Pin connections
Figure 3. Pin connections (top through view)
2.2 Pin descriptions
Table 3. Pin descriptions
Electrical ratings ST2G3236
8/22 Doc ID 12942 Rev 4
3 Electrical ratings
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 other conditions above those indicated in the operating sections of
this specification is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
Table 4. Absolute maximum ratings
Table 5. Recommended operating conditions VIN from 0.8 V to 2.0 V at VCC = 3.0 V
ST2G3236 Electrical characteristics
Doc ID 12942 Rev 4 9/22
4 Electrical characteristics
4.1 DC electrical characteristics for V CCA
Table 6. DC specification for VCCA
Electrical characteristics ST2G3236
10/22 Doc ID 12942 Rev 4
4.2 DC electrical characteristics for V CCB VCC range = 3.3 ± 0.3; 2.5 ± 0.2 V; 1.8 ± 0.15 V
Table 6. DC specification for VCCA (continued)
Table 7. DC specification for V CCB
ST2G3236 Electrical characteristics
Doc ID 12942 Rev 4 11/22 VCC range = 3.3 ± 0.3; 2.5 ± 0.2 V; 1.8 ± 0.15 V
Table 7. DC specification for VCCB (continued)
