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ST1G3236
1-bit dual supply bus transceiver level translator with A-side series resistor
Features
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High speed: tPD = 4.0ns (Max.) at TA = 85°C Low power dissipation: ICCA = ICCB = 5μA(Max.) at TA = 85°C Balanced propagation delays: tPLH ≅ tPHL Power-down protection on inputs and outputs 26Ω series resistor on A-side outputs Operating voltage range: – VCCA(Opr) = 1.2V to 3.6V – VCCB(Opr) = 1.2V to VCCA Latch-up performance exceeds 100mA per JESD 78, Class II ESD performance exceeds JESD22 – 2000-V Human-body model (A114-A)
DFN6L
Description
The ST1G3236 is a dual supply low voltage 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 achieves high speed operation while maintaining low power dissipation. VCCA and VCCB can be powered from 1.2V to 3.6V respectively. The DIR pin is designed to track VCCB. The device is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR inputs. All inputs are equipped with protection circuits against static discharge, giving them 2kV ESD immunity and transient excess voltage.
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Table 1.
Device summary
Order code ST1G3236DTR Package DFN6L (1.2x1mm) Packaging Tape and Reel
July 2007
Rev 1
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Contents
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ST1G3236
Contents
1 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 1.2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 3
Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 5 6 7 8
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
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ST1G3236
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Device summary
1
1.1
Device summary
Pin settings
Figure 1. Logic diagram
GND
DIR B1 A1
VCCB
VCCA
CS000101
Figure 2.
Pin connection (top through view)
V
CCA
1 2 3
6 5 4
V
CCB
GND A1
DIR B1
DFN6L
1.2
Pin description
Table 1. Pin description
Pin N° 1 2 3 4 5 6 Symbol VCCA GND A1 B1 DIR VCCB Name and function Positive supply voltage Ground (0V) Data Inputs/Outputs Data Inputs/Outputs Directional controls Positive supply voltage
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Pin connection
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ST1G3236
2
Pin connection
Figure 3. Input and output equivalent circuit
VCCB / VCCA Overvolt. control Control Inputs An/Bn R S = (0Ω / 26Ω) ESD protection GND GND GND ESD protection GND GND GND Bn/An
CS157401
Table 2.
Truth table
Function Dir input Bus A L H Output Input Bus B Input Output
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ST1G3236
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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 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 IIK IOK IOA IOB ICCA ICCB Pd Tstg TL Output supply voltage Input supply voltage DC input voltage DC output voltage DC output voltage DC input diode current DC output diode current DC output current DC output current DC VCCA or ground current DC VCCB 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 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 mA mA mA mA mA mA mW °C °C
3.1
Recommended operating conditions
Table 4.
Symbol VCCA VCCB(1) Supply voltage Supply voltage
Recommended operating conditions
Parameter Value 1.2 to 3.6 1.2 to VCCA Unit V V
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Maximum rating Table 4.
Symbol VI VI/OA VI/OB Top dt/dv(2) Input voltage (DIR) I/O voltage I/O voltage Operating .