ST2G3236
2-bit dual supply bus transceiver level translator with a side series resistor
Features
High speed: tPD = 6.2ns (Max.) at TA = 85C VCCB = 1.8V VCCA = 3.3V Low power dissipation: ICCA = ICCB = 5A (Max.) at TA = 85C Symmetrical output impedance: |IOHA| = IOLA = 7mA Min at VCCA = 2.75V; VCCB = 1.65V or 2.3V |IOHB| = IOLB = 2mA Min at VCCA = 2.3V or 3.0V; VCCB = 1.65V Balanced propagation delays: TPLH TPHL Power down protections on inputs and outputs 26 series resistor on A side Operating voltage range: VCCA (OPR) = 1.4V to 3.6V VCCB (OPR) = 1.4V to 3.6V Max data rates: 380Mbps (1.8V to 3.3V translation) 260Mbps (<1.8V to 3.3V translation) 260Mbps (Translate to 2.5V) 210Mbps (Translate to 1.5V) Latch-up performance exceeds 500mA (JESD17) ESD performance: HBM > 2kV (MIL STD 883 method 3015); MM > 200V
QFN10 (1.8mm x 1.4mm)
Description
The ST2G3236 is a dual supply low voltage CMOS 2-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 1.8V bus in a mixed 3.3V/1.8V, 3.3V/2.5V and 2.5V/1.8V 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 3V bus, the B-port with the 2.5V and 1.8V bus. All inputs are equipped with protection circuits against static discharge, giving them 2kV ESD immunity and transient excess voltage.
Order codes
Part number ST2G3236 Package QFN10 (1.8mm x 1.4mm) Packaging Tape and Reel
December 2006
Rev 1
1/20
www.st.com 20
Contents
ST2G3236
Contents
1 Logic diagram and I/O equivalent circuit . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 1.2 1.3 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Recommended power-up sequence is as follows: . . . . . . . . . . . . . . . . . . . 4 The recommended power-down sequence is as follows: . . . . . . . . . . . . . . 4
2
Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 2.2 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 4
Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 4.2 4.3 4.4 DC electrical characteristics for VCCA . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 DC electrical characteristics for VCCB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 AC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Capacitance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 6 7 8
Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
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ST2G3236
Logic diagram and I/O equivalent circuit
1
Logic diagram and I/O equivalent circuit
Figure 1. Logic diagram
A1
B1
DIR1
OE OE
DIR A2 B2
Figure 2.
I/O equivalent circuit
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Logic diagram and I/O equivalent circuit
ST2G3236
1.1
Truth table
Table 1. Truth table
Inputs OE L L H DIRn L H X A BUS Output Input High-Z Function Output B BUS Input Output High-Z B => A B <= A HIGH-Z
1.2
Recommended power-up sequence is as follows:
1. 2. 3. 4. Apply power to either VCC Apply power to the OE input and to the respective data inputs. This may occur at the same time as Step 1. Apply power to other VCC Drive the OE input LOW to enable the device.
1.3
The recommended power-down sequence is as follows:
1. 2. 3. Drive OE input HIGH to disable the device Remove power from either VCC Remove power from other VCC
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ST2G3236
Pin settings
2
2.1
Pin settings
Pin connections
Figure 3. Pin connections (top through view)
A2 9
A1 10
DIR1 VCCB DIR2
1 2 3
8 7 6
VCCA GND OE OE
4 B1
5 B2
2.2
Pin descriptions
Table 2.
Pin N 1, 3 10 4 9 5 7 8 2 6
Pin descriptions
Symbol DIR1, DIR2 A1 B1 A2 B2 GND VCCA VCCB OE Directional controls Data inputs/outputs Data outputs/inputs Data inputs/outputs Data outputs/inputs Ground (0V) Positive supply voltage Positive supply voltage Output enable (active low) Name and function
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Electrical ratings
ST2G3236
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. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 3.
Symbol VCCA VCCB VI VI/OA VI/OB VI/OA VI/OB IIK IOK IOA IOB ICCA ICCB PD Tstg TL Supply voltage Supply voltage DC input voltage DC I/O voltage (output disabled) DC I/O voltage (output disabled) DC output voltage DC output voltage DC input diode current DC output diode current DC output current DC output current DC VCC or ground current DC VCC or ground current Power dissipation Storage temperature Lead temperature (10 sec)
Absolute maximum ratings
Parameter Value -0.5 to 4.6 -0.5 to 4.6 -0.5 to 4.6 -0.5 to 4.6 -0.5 to 4.6 -0.5 to VCCA + 0.5 -0.5 to VCCB + 0.5 -20 -50 50 50 100 100 200 -65 to +150 260 Unit V V V V V V V mA mA mA mA mA mA mW C C
Table 4.
Symbol VCCA VCCB VI VI/OA VI/OB Top
Recommended operating conditions
Parameter Supply voltage Supply voltage Input voltage (DIRn, OE) I/O voltage I/O voltage Operating temperature VCCB = 3.0 to 3.6V Value 1.4 to 3.6 1.4 to 3.6 0 to VCCA 0 to VCCA 0 to VCCB -40 to +85 0 to 10 0 to 20 0 to 100 Unit V V V V V C ns/V ns/V ns/V
dt/dv
Input rise and fall time (1) VCCB = 2.3 to 2.7V VCCB = 1.4 to 1.95V
1. VIN from 0.8V to 2.0V at VCC = 3.0V
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ST2G3236
Electrical characteristics
4
4.1
Table 5.
Electrical characteristics
DC electrical characteristics for VCCA
DC specification for VCCA
Test conditions Value TA = 25C Min 0.65VCCA 0.65VCCA 1.6 2.0 0.35VCCA 0.35VCCA 0.7 0.8 IO = -100A IO = -0.4mA IO = -7mA IO = -5mA IO = -2mA IO = -1mA IO = 100A IO = 1mA IO = 7mA IO = 5mA IO = 2mA IO = 1mA VI = VCC or GND VI = 3.6V or GND VIA= GND or 3.6V VIB = VIHB or VILB OE = VCCB 1.2 2.5 2.2 1.8 1.4 1.1 0.20 0.40 0.55 0.40 0.25 0.20 0.5 0.5 1.2 2.5 2.2 V 1.8 1.4 1.1 0.20 0.40 0.55 V 0.40 0.25 0.20 5 5 A Max -40 to 85C Min 0.65VCCA 0.65VCCA 1.6 2.0 0.35VCCA 0.35VCCA 0.7 0.8 V V Max Unit
Symbol Parameter
VCCB(1) (V)
VCCA(1) (V) 1.4
VIHA
High level input voltage (An)
1.8 1.4 to 3.3V 2.5 3.3 1.4
VILA
Low level input voltage (An)
1.8 1.4 to 3.3V 2.5 3.3 1.4 2.75
VOHA
High level output voltage
2.75 1.4 to 3.3V 2.3 1.65 1.4 1.4 2.75
VOLA
Low level output voltage
2.75 1.4 to 3.3V 2.3 1.65 1.4
IIA
Input leakage current High impedance output leakage current
2.7 1.4
3.3 2.7
IOZA
2.7
3.3
1.0
10
A
7/20
Electrical characteristics Table 5. DC specification for VCCA
Test conditions Symbol Parameter VCCB (1) (V) VCCA(1) (V) VIA=GND to 3.6V VIB=GND to 3.6V OE, DIR=GND to 3.6V VIA=VCCA or GND VIB=VCCB or GND TA = 25C Min Max Value
ST2G3236
-40 to 85C Min Max
Unit
IOFF
Power OFF leakage current Quiescent supply current Maximum quiescent supply current / input (An)
0
0
1.0
10
A
1.95 1.95 2.7 1.95 1.95 2.7
2.7 3.3 3.3 2.7 3.3 3.3 VIA=VCCA-0.6V VIB=VCCB or GND 0.75 mA 0.5 5 A
ICCtA
ICCtA
1. VCC range = 3.3 0.3; 2.5 0.2V; 1.8 0.15V
4.2
Table 6.
DC electrical characteristics for VCCB
DC specification for VCCB
Test conditions Value TA = 25C Min 0.65VCCB 1.4 to 3.3V 0.65VCCB 1.6 2.0 0.35VCCB 1.4 to 3.3V 0.35VCCB 0.7 0.8 Max -40 to 85C Min 0.65VCCB 0.65VCCB 1.6 2.0 0.35VCCB 0.35VCCB 0.7 0.8 V V Max Unit
Symbol Parameter
VCCB (1) (V) 1.4 1.8 2.5 3.3 1.4 1.8 2.5 3.3
VCCA(1) (V)
VIHB
High level input voltage (Bn, DIRn, OE) Low level input voltage (Bn, DIRn, OE)
VILB
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ST2G3236 Table 6. DC specification for VCCB
Test conditions Symbol Parameter VCCB(1) (V) 1.4 1.8 High level output voltage 2.75 2.75 2.3 1.65 1.4 1.4 1.8 Low level output voltage 2.75 2.75 2.3 1.65 1.4 IIB Input leakage current High impedance output leakage current Quiescent supply current Maximum quiescent supply current / input (Bn, DIRn, OE) 2.7 1.4 3.3 2.7 1.4 to 3.3V 1.4 to 3.3V VCCA(1) (V) IO = -100A IO = -100A IO = -20mA IO = -15mA IO = -4mA IO = -2mA IO = -2mA IO= 100A IO= 100A IO= 20mA IO= 15mA IO= 4mA IO= 2mA IO= 2mA VI = VCC or GND VI = 3.6V or GND VIA = VIHA or VILA VIB = GND or 3.6V OE=VCCB VIA=VCCA or GND VIB=VCCB or GND TA = 25C Min 1.3 1.6 2.2 1.7 1.44 1.5 1.25 0.1 0.2 0.55 0.35 0.39 0.20 0.15 0.5 0.5 Max
Electrical characteristics
Value -40 to 85C Min 1.3 1.6 2.2 1.7 1.44 1.5 1.25 0.1 0.2 0.55 0.35 0.39 0.20 0.15 5 5 A V V Max Unit
VOHB
VOLB
IOZB
2.7
3.3
1.0
10
A
1.95 1.95 2.7 1.95 1.95 2.7
2.7 3.3 3.3 2.7 3.3 3.3 VIB=VCCB - 0.6V VIA=VCCA or GND 0.75 mA 0.5 5 A
ICCtB
ICCtB
1. VCC range = 3.3 0.3; 2.5 0.2V; 1.8 0.15V
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Electrical characteristics
ST2G3236
4.3
Table 7.
AC electrical characteristics
AC electrical characteristics
Test condition Value -40 to 85 C VCCB (V) 1.8 0.15 VCCA (V) Min 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 2.5 0.2 3.3 0.3 3.3 0.3 CL = 30pF RL = 500 CL = 30pF RL = 500 CL = 30pF RL = 500 CL = 30pF RL = 500 CL = 30pF RL = 500 CL = 30pF RL = 500 CL = 30pF RL = 500 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 Propagation delay time An to Bn Max 5.8 6.2 4.4 5.5 5.1 4.0 5.4 5.1 4.0 5.3 5.2 4.6 5.2 5.6 4.8 4.6 4.5 4.4 0.5 0.5 0.75 ns ns ns ns ns ns ns Unit
Symbol
Parameter
tPLH tPHL
1.8 0.15 2.5 0.2 1.8 0.15
tPLH tPHL
Propagation delay time Bn to An
1.8 0.15 2.5 0.2 1.8 0.15
tPZL tPZH
Output enable time OE to An
1.8 0.15 2.5 0.2 1.8 0.15
tPZL tPZH
Output enable time OE to Bn
1.8 0.15 2.5 0.2 1.8 0.15
tPLZ tPHZ
Output disable time OE to An
1.8 0.15 2.5 0.2 1.8 0.15
tPLZ tPHZ
Output disable time OE to Bn
1.8 0.15 2.5 0.2 1.8 0.15
tOSLH tOSHL
Output to output skew time (1) (2)
1.8 0.15 2.5 0.2
1. Skew is defined as the absolute value of the difference between the actual propagation delay for any two outputs of the same device switching in the same direction, either HIGH or LOW (Toslh = | tPLHm tPLHn |, tOSHL = | tPHLm - tPHLn | 2. Parameter guaranteed by design
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ST2G3236
Electrical characteristics
4.4
Capacitance characteristics
Table 8. Capacitance characteristics
Test Condition Symbol Parameter VCCB (V) Open 2.5 2.5 1.8 VCCA (V) Open 3.3 3.3 3.3 f=10MHz Value TA = 25 C Min. Typ. Max. 5 6 29 pF 29 -40 to 85 C Min. Max. pF pF Unit
CINB CI/O CPD (1)
Input capacitance Input/output capacitance Power dissipation capacitance
1. CPD is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average current can be obtained by the following equation. ICC(opr) - CPD x VCC x fIN + ICC/16 (per circuit)
11/20
Test circuit
ST2G3236
5
Test circuit
Figure 4. Test circuit
Table 9.
Test values
Test Switch Open 6V 2VCC GND
tPLH, tPHL tPZL, tPLZ (VCC = 3.0 to 3.6V) tPZL, tPLZ (VCC = 2.3 to 2.7V or VCC = 1.6 to 1.95V) tPZH, tPHZ
12/20
ST2G3236
Waveforms
6
Waveforms
Table 10. Waveform symbol value
VCC 3.0 to 3.6V VIH VM VX VY
Symbol VCC 1.5V VOL + 0.3V VOL - 0.3V
2.3 to 2.7V VCC VCC/2 VOL + 0.15V VOL - 0.15V
1.65 to 1.95V VCC VCC/2 VOL + 0.15V VOL - 0.15V
CL = 30pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50) Waveform - propagation delay (f = 1MHz, 50% duty cycle)
Figure 5.
Figure 6.
Waveform - output enable and disable time (f = 1MHz, 50% duty cycle)
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Package mechanical data
ST2G3236
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 to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com
14/20
ST2G3236 Table 1. QFN10L(1.8x1.4) Mechical data
ref. A A1 A3 b D E e L mm Nom 0.50 0.02 0.127 0.20 1.80 1.40 0.40 0.40 0.30 0.50 0.15 1.70 1.30 0.25 1.90 1.50 Min 0.45 0 Max 0.55 0.05 Nom 0.020 0.001 0.005 0.007 0.070 0.055 0.015 0.015
Package mechanical data
inch Min 0.017 0 0 0.006 0.066 0.051 0.011 Max 0.021 0.002 0 0.010 0.074 0.059 0.020
Figure 7.
Package dimension
15/20
Package mechanical data
ST2G3236
Figure 8.
QFN10L(1.8x1.4) Foot print recommendation
Figure 9.
QFN10L(1.8x1.4) carrier type
16/20
ST2G3236 Figure 10. QFN10L(1.8x1.4) Reel information
Package mechanical data
17/20
Package mechanical data Figure 11. QFN10L(1.8x1.4) Reel information
ST2G3236
18/20
ST2G3236
Revision history
8
Revision history
Table 11.
Date 06-Dec-2006
Revision history
Revision 1 First release Changes
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ST2G3236
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