ST2349 4-bit dual supply level translator without direction control pin Features ■ 45 Mbps (max) data rate when driven by a totem pole driver ■ 4 Mbps (max) data rate when driven by an open drain pole driver ■ Bi-directional level translation without direction control pin ■ Wide VL voltage range of 1.65 to 3.6 V ■ Wide VCC voltage range of 1.80 to 5.5 V ■ Power down mode feature – when either supply is off, all I/Os are in high impedance ■ Low quiescent current (max 24 µA) ■ Able to be driven by totem pole and open drain drivers ■ 5.5 V tolerant enable pin ■ ESD performance on all pins: ±2 kV HBM ■ Small package and footprint QFN16 (2.6 x 1.8 mm) package Description Applications ■ Low voltage system level translation ■ Mobile phones and other mobile devices ■ I2C level translation ■ UART level translation Table 1. QFN16L (2.6 x 1.8 mm) The ST2349 is a 4-bit dual supply level translator which provides the level shifting capability to allow data transfer in a multi-voltage system. Externally applied voltages, VCC and VL, set the logic levels on either side of the device. It utilizes transmission gate-based design that allows bidirectional level translation without a control pin. The ST2349 accepts a VL from 1.65 to 3.6 V and VCC from 1.80 to 5.5 V, making it ideal for data transfer between low-voltage ASICs/PLD and higher voltage systems. This device has a tri-state output mode which can be used to disable all I/Os. The ST2349 supports power down mode when VCC is grounded/floating and the device is disabled via the OE pin. Device summary Order code Package Packaging ST2349QTR QFN16 (2.6 x 1.8 mm) Tape & reel (3000 parts per reel) November 2007 Rev 3 1/23 www.st.com 23 Contents ST2349 Contents 1 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Device block diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Supplementary notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 3.1 Driver requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 Load driving capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 Power off feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.1 5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 AC characteristics (device driven by open drain driver) . . . . . . . . . . . . . . 11 5.2 AC characteristics (device driven by totem pole driver ) . . . . . . . . . . . . . 13 6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/23 ST2349 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. ST2349 pin connection (top through view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 ST2349 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Application block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Waveform - propagation delay (f = 1 MHz; 50% duty cycle). . . . . . . . . . . . . . . . . . . . . . . . 16 Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle) . . . . . . . . . . . . . 17 QFN16L (2.6 x 1.8 mm) package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 QFN16L (2.6 x 1.8 mm) footprint recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 QFN16L (2.6 x 1.8 mm) carrier tape . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 QFN16L (2.6 x 1.8 mm) reel information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3/23 List of tables ST2349 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. Table 13. Table 14. Table 15. Table 16. 4/23 Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ST2349 pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Truth table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 DC characteristics (over recommended operating conditions unless otherwise noted. All typical values are at TA = 25 oC) AC characteristics - test conditions: VL = 1.65 - 1.8 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C11 AC characteristics - test conditions: VL = 2.5 - 2.7 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C11 AC characteristics - test conditions: VL = 2.7 - 3.6 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C12 AC characteristics (test conditions: VL = 1.65 - 1.8 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C)13 AC characteristics (test conditions: VL = 2.5 - 2.7 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤2 ns) over temperature range -40 °C to 85 °C)13 AC characteristics (test conditions: VL = 2.7 - 3.6 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C)14 Test circuit switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Waveform symbol value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 QFN16L (2.6 x 1.8 mm) mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 ST2349 Pin settings 1 Pin settings 1.1 Pin connection VCC I/O VCC1 16 VL ST2349 pin connection (top through view) I/O VL1 15 14 13 12 I/OVCC2 2 11 GND I/OVL3 3 10 I/OVCC3 I/OVL4 4 9 I/OVCC4 NC 5 6 7 8 NC 1 OE VL I/OVL2 VCC Figure 1. CS00022 1.2 Pin description Table 2. ST2349 pin description Pin number Symbol Name and function 1 I/OVL2 Data input/output 2 OE Output enable 3 I/OVL3 Data input/output 4 I/OVL4 Data input/output 5 NC No connection 6 VL Supply voltage 7 VCC Supply voltage 8 NC No connection 9 I/OVCC4 Data input/output 10 I/OVCC3 Data input/output 11 GND Ground 12 I/OVCC2 Data input/output 13 I/OVCC1 Data input/output 14 VCC Supply voltage 15 VL Supply voltage 16 I/OVL1 Data input/output 5/23 Device block diagrams 2 ST2349 Device block diagrams Figure 2. ST2349 block diagram VL ST2349 EN OE VCC VL I/O VL I/O VCC GND GND = one-shot circuit * ST2349 has 4 channels. For simplicity, the above diagram shows only 1 channel. * When OE is low, all I/Os are in high-impedance mode. CS00021 Figure 3. Application block diagram VCC VL VL V L VL VL 0.1μF VCC VCC VCC VCC VL VL system controller VCC I/OVL1 I/OVL2 I/OVCC1 I/OVCC2 I/OVL3 I/OVCC3 I/OVCC4 I/OVL4 0.1 μF 1 μF VCC system controller OE CD00023 6/23 ST2349 Supplementary notes 3 Supplementary notes 3.1 Driver requirement The ST2349 may be driven by an open drain or totem pole driver and the nature of the device’s output is “open drain”. It must not be used to drive a pull-down resistor since the impedance of the output at HIGH state depends on the pull-up resistor placed at the I/Os. As the device has pull-up resistors on both the I/OVCC and I/OVL ports, the user needs to ensure that the driver is able to sink the required amount of current. For example, if the settings are VCC = 5.5 V, VL = 4.3 V and the pull-up resistor is 10 kΩ, then the driver must be able to sink at least (5.5 V/10 kΩ) + (4.3 V/10 kΩ) = 1 mA and still meet the VIL requirements of the ST2349. 3.2 Load driving capability To support the open drain system, the one-shot transistor is turned on only during state transition at the output side. When it drives a high state, after the one-shot transistor is turned off, only the pull-up resistor is able to maintain the state. In this case, the resistive load is not recommended. 3.3 Power off feature In some applications where it might be required to turn off one of the power supplies powering up the level translator, the user may turn off the VCC only when the OE pin is low (device is disabled). There will be no current consumption in VL due to floating gates or other causes, and the I/Os are in a high-impedance state in this mode. 3.4 Truth table Table 3. Truth table Enable OE H (1) Bi-directional Input/Output I/OVCC H H(1) L (2) L Z (3) I/OVL H(1) L Z(3) 1. High level VL power supply referred 2. High level VCC power supply referred 3. Z = high impedance 7/23 Maximum rating 4 ST2349 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 4. Absolute maximum ratings Symbol Parameter Value Unit VL Supply voltage -0.3 to 4.6 V VCC Supply voltage -0.3 to 6.5 V VOE DC control input voltage -0.3 to 6.5 V -0.3 to VL + 0.3 V -0.3 to VCC + 0.3 V DC input diode current -20 mA II/OVL DC output current ±25 mA II/OVCC DC output current ±258 mA 40 mA VI/OVL VI/OVCC IIK DC I/OVL input voltage (OE = GND or VL) DC I/OVCC input voltage (OE = GND or VL) ISCTOUT Short circuit duration, continuous PD Power dissipation(1) 500 mW TSTG Storage temperature -65 to 150 oC Lead temperature (10 seconds) 300 oC Electrostatic discharge protection (HBM) ±2 kV TL ESD 1. 500mW: 65 oC derated to 300 mW by 10W/oC: 65 oC to 85 oC 4.1 Recommended operating conditions Table 5. Recommended operating conditions Symbol Parameter Typ Max Unit VL Supply voltage 1.65 3.6 V VCC(1) Supply voltage 1.8 5.5 V Input voltage (OE output enable pin, VL power supply referred) 0 3.6 V I/OVL voltage 0 VL V I/OVCC voltage 0 VCC V -40 85 oC 0 1 ns/V VOE VI/OVL VI/OVCC Top dt/dV Operating temperature Input rise and fall time (for 45 Mbps operation) 1. VCC must be greater than VL. 8/23 Min ST2349 Electrical characteristics 5 Electrical characteristics Table 6. DC characteristics (over recommended operating conditions unless otherwise noted. All typical values are at TA = 25 oC) Test conditions Symbol Value TA = 25 oC Parameter VL VIHL VILL VIHC VILC VIH-OE VIL-OE Low level input voltage (I/OVL) High level input voltage (I/OVCC) Low level input voltage (I/OVCC) High level input voltage (OE) Low level input voltage (OE) Typ Max Min 1.65 1.4 1.4 2.0 1.6 1.6 2.0 2.0 3.0 2.4 2.4 3.6 2.8 2.8 2.5 VL to 5.5 Max V 1.65 0.3 0.3 2.0 0.4 0.4 0.5 0.5 3.0 0.6 0.6 3.6 0.8 0.8 2.5 1.65 to VCC 1.65 2.5 Unit VCC Min High level input voltage (I/OVL) -40 to 85 oC VL to 5.5 1.8 1.6 1.6 2.5 2.3 2.3 3.0 2.7 2.7 3.6 3.3 3.3 4.3 3.5 3.5 5.5 4.2 4.2 3 - 5.5 V V 0.3 V 2.7 3.6 3.6 - 5.5 0.5 1.65 1.0 1.0 2.0 1.2 1.2 1.4 1.4 3.0 1.6 1.6 3.6 2.0 2.0 2.5 VL to 5.5 V 1.65 0.33 0.33 2.0 0.40 0.40 0.50 0.50 3.0 0.60 0.60 3.6 0.75 0.75 2.5 VL to 5.5 V 9/23 Electrical characteristics Table 6. ST2349 DC characteristics (over recommended operating conditions unless otherwise noted. All typical values are at TA = 25 oC) (continued) Test conditions Symbol Value TA = 25 oC Parameter VL -40 to 85 oC Unit VCC Min Typ Max Min Max VOLL Low level output voltage (I/OVL) IO = 1.0 mA 1.65 to VL to 5.5 3.6 I/OVCC ≤ 0.15 V 0.40 0.40 V VOLC Low level output voltage (I/OVCC) IO = 1.0 mA 1.65 to VL to 5.5 3.6 I/OVL ≤ 0.15 V 0.40 0.40 V IOE Control input leakage current (OE) V = GND or 1.65 to VL to 5.5 OE VL 3.6 ±0.1 ±0.1 µA IIO_LKG High impedance leakage current (I/OVL, I/OVCC) 1.65 to VL to 5.5 OE = GND 3.6 ±0.1 ±0.1 µA IQVCC Quiescent supply current VCC only pull-up 1.65 to VL to 5.5 resistor 3.6 connected to I/O 6 10 24 µA IQVL Quiescent supply current VL only pull-up 1.65 to VL to 5.5 resistor 3.6 connected to I/O 0.01 0.1 1 µA IZ-VCC High impedance quiescent supply current VCC OE = GND; 1.65 to VL to 5.5 only pull-up 3.6 resistor connected to I/O 6 10 24 µA IZ-VL High impedance quiescent supply current VL OE = GND; 1.65 to only pull-up VL to 5.5 3.6 resistor connected to I/O 0.01 0.1 1 µA 10/23 ST2349 Electrical characteristics 5.1 AC characteristics (device driven by open drain driver) Table 7. AC characteristics - test conditions: VL = 1.65 − 1.8 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C VCC = 1.8 − 2.5 V Symbol VCC = 2.7 − 3.6 V Parameter Min Max Min Max VCC = 4.3 − 5.5 V Min Unit Max tRVCC Rise time I/OVCC 80 50 30 ns tFVCC Fall time I/OVCC 3 3 3 ns tRVL Rise time I/OVL 7 6 6 ns tFVL Fall time I/OVL 4 5 5 ns tPLH 5 5 5 ns tPHL 5 5 5 ns tPLH 5 5 5 ns tPHL 5 7 7 ns En 10 10 10 ns Dis 40 40 40 ns 1.6 2.5 4 MHz Propagation delay time tI/OVL-VCC I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL Propagation delay time tI/OVCC-VL I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-LH tPZL tPZH tPLZ tPHZ DR Output enable and disable time Data rate(1) 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. Table 8. AC characteristics - test conditions: VL = 2.5 −2.7 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C VCC = 2.7 Symbol − 3.6 V VCC = 4.3 − 5.5 V Parameter Unit Min Max Min Max tRVCC Rise time I/OVCC 70 40 ns tFVCC Fall time I/OVCC 3 3 ns tRVL Rise time I/OVL 5 5 ns tFVL Fall time I/OVL 3 3 ns tPLH 2 2 ns tPHL 3 3 ns tPLH 3 3 ns tPHL 4 4 ns tI/OVL-VCC Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-LH 11/23 Electrical characteristics Table 8. ST2349 AC characteristics - test conditions: VL = 2.5 −2.7 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C VCC = 2.7 Symbol DR VCC = 4.3 − 5.5 V Unit Min tPZL tPZH tPLZ tPHZ − 3.6 V Parameter Output enable and disable time Data rate Max Min Max En 6 6 ns Dis 40 40 ns 2.5 3.2 MHz (1) 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. Table 9. AC characteristics - test conditions: VL = 2.7 − 3.6 V (load CL = 15 pF; Rup = 4.7 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C VCC = 4.3 − 5.5 V Symbol Parameter Unit Min Max tRVCC Rise time I/OVCC 55 ns tFVCC Fall time I/OVCC 3 ns tRVL Rise time I/OVL 4 ns tFVL Fall time I/OVL 3 ns Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tPLH 2 ns tI/OVL-VCC tPHL 4 ns tPLH 4 ns tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL tPHL 4 ns tPZL tPZH tPLZ tPHZ En 6 ns Output enable and disable time Dis 40 ns 2.8 MHz DR Data rate(1) 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. 12/23 ST2349 Electrical characteristics 5.2 AC characteristics (device driven by totem pole driver ) Table 10. AC characteristics (test conditions: VL = 1.65 – 1.8 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C) VCC = 1.8 – 2.5 V Symbol VCC = 2.7 – 3.6 V VCC = 4.3 – 5.5 V Parameter Unit Min Max Min Max Min Max tRVCC Rise time I/OVCC 7 3 4 ns tFVCC Fall time I/OVCC 7 3 3 ns tRVL Rise time I/OVL 6 4 5 ns tFVL Fall time I/OVL 4 4 4 ns tPLH 6 5 4 ns tPHL 5 5 5 ns tPLH 6 5 4 ns tPHL 4.5 5.2 7 ns En 10 10 10 ns Dis 40 40 40 ns 12 32 32 MHz tI/OVLVCC tI/OVCCVL Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL tPZL tPZH Output enable and tPLZ tPHZ disable time DR Data rate(1) 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. Table 11. AC characteristics (test conditions: VL = 2.5 – 2.7 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤2 ns) over temperature range -40 °C to 85 °C) VCC = 2.7 Symbol − 3.6 V VCC = 4.3 − 5.5 V Parameter Unit Min Max Min Max tRVCC Rise time I/OVCC 6 4 ns tFVCC Fall time I/OVCC 3 3 ns tRVL Rise time I/OVL 5 5 ns tFVL Fall time I/OVL 3 3 ns Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tPLH 3.5 3 ns tI/OVL-VCC tPHL 4 4 ns tPLH 2.5 2.1 tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL tPHL 4 ns ns ns 4 ns 13/23 Electrical characteristics Table 11. ST2349 AC characteristics (test conditions: VL = 2.5 – 2.7 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤2 ns) over temperature range -40 °C to 85 °C) (continued) VCC = 2.7 Symbol − 3.6 V VCC = 4.3 − 5.5 V Parameter Unit Min tPZL tPZH tPLZ tPHZ Output enable and disable time Min Max En 6 6 ns Dis 40 40 ns 45 45 MHz (1) Data rate DR Max 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. Table 12. AC characteristics (test conditions: VL = 2.7 – 3.6 V (load CL = 15 pF; Rup = 10 kΩ; driver tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C) VCC = 4.3 − 5.5 V Symbol Parameter Unit Min Max tRVCC Rise time I/OVCC 5 ns tFVCC Fall time I/OVCC 3 ns tRVL Rise time I/OVL 4 ns tFVL Fall time I/OVL 3 ns tPLH 2.5 ns tPHL 4 ns tPLH 2 tPHL 4 tI/OVL-VCC Propagation delay time I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL tI/OVCC-VL Propagation delay time I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL ns tPZL tPZH tPLZ tPHZ DR ns Output enable and disable En time Dis Data rate(1) ns ns 6 ns 40 ns 45 MHz 1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%. 14/23 ST2349 Electrical characteristics Figure 4. Test circuit VL VL VCC Rup VCC Rup Pulse generator VL VCC OPEN GND D.U.T CL CS14021 Table 13. Test circuit switches Switch Test tPLH, tPHL Driving I/OVL Driving I/OVCC Open drain driving Open Open Open 15/23 Waveforms 6 ST2349 Waveforms Table 14. Waveform symbol value Driving I/OVCC Driving I/OVL Symbol 1.8 V ≤ VL ≤ VCC ≤ 2.5 V 3.3 V ≤ VL ≤ VCC ≤ 5.0 V 1.8 V ≤ VL ≤ VCC ≤ 2.5 V 3.3V ≤ VL ≤ VCC ≤ 5.0 V VIH VL VL VCC VCC VIM 50% VL 50% VL 50% VCC 50% VCC VOM 50% VCC 50% VCC 50% VL 50% VL VX VOL +0.15V VOL +0.3V VOL +0.15V VOL +0.3V VY VOH -0.15V VOH -0.3V VOH -0.15V VOH -0.3V Figure 5. 16/23 Waveform - propagation delay (f = 1 MHz; 50% duty cycle) ST2349 Waveforms Figure 6. Waveform - output enable and disable time (f = 1 MHz; 50% duty cycle) 17/23 Package mechanical data 7 ST2349 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. Figure 7. QFN16L (2.6 x 1.8 mm) package outline BOTTOM VIEW QFN16L 1. Drawing not to scale. 2. Dimensions are in millimeters. 18/23 ST2349 Package mechanical data Table 15. QFN16L (2.6 x 1.8 mm) mechanical data millimeters Symbol Figure 8. Typ Min Max A 0.55 0.45 0.60 A1 0.02 0 0.05 b 0.20 0.15 0.25 D 2.60 2.50 2.70 E 1.80 1.70 1.90 e 0.40 L 0.40 0.35 0.45 QFN16L (2.6 x 1.8 mm) footprint recommentations 7874009 1. Drawing not to scale. 2. Dimensions are in millimeters. 19/23 Package mechanical data Figure 9. ST2349 QFN16L (2.6 x 1.8 mm) carrier tape 785978-J 20/23 ST2349 Package mechanical data Figure 10. QFN16L (2.6 x 1.8 mm) reel information 7875978 1. Drawing not to scale. 2. Dimensions are in millimeters 21/23 Revision history 8 ST2349 Revision history Table 16. Document revision history Date Revision 07-May-2007 1 Initial release. 29-May-2007 2 Typo in cover page title. 3 Removed Data Brief classification from the cover page. Modified title and features section, added the following sections: Section 1: Pin settings, Section 2: Device block diagrams, Section 3: Supplementary notes, Section 4: Maximum rating, Section 5: Electrical characteristicsSection 6: Waveforms and updated Section 7: Package mechanical data. 26-Nov-2007 22/23 Changes ST2349 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. © 2007 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 23/23