ST2378E 8-bit dual supply 1.71V to 5.5V level translator with I/O VCC ± 15KV ESD protection General features ■ High speed: – tPD = 15ns (Max.) at TA = 85°C – VL = 1.8V – VCC = 5.5V ■ Guaranteed data rate: – 13Mbps (1.8V ≤ VL ≤ VCC ≤ 5.5V) ■ Flip-Chip20 Low power dissipation: – ITS-VL = ITS-VCC = 1µA (Max.) at TA = 85°C – IQVL = 100µA (Max.) at TA = 85°C – IQCC = 10µA (Max.) at TA = 85°C Description ■ Output impedance: – |IOHA| = 20µA(Min.) at VL=1.8V; VCC = 5.5V – IOLA = 1.0µA(Min.) at VL=1.8V VCC = 5.5V ■ Bi-directional level translation ■ Totem pole and open drain driving for I2C communications ■ 5V tolerant on enable pin ■ Wide operating voltage range: – VL(Opr) = 1.71V to VCC – VCC(Opr) = 1.71V to 5.5V ■ ESD performance ■ HBM > 15KV ESD protection on I/OVCC lines ■ Leadfree Flip-Chip and TSSOP packages TSSOP20 The ST2378E is an 8-bit, dual supply, bi-directional level translator with ±15kV ESDprotection on I/Os at VCC side. It is designed to interface data transfer between low-voltage ASICs/PLDs and higher voltage systems. Externally applied voltage, VCC and VL, set logic levels at both sides with range specified as 1.71V ≤ VL ≤ 5.5V and VL ≤ VCC ≤ 5.5V. For proper operation, VCC should be set higher than VL. Utilizing a transmission-gate-based design, this device allows bi-directional asynchronous data transfer, which means each channel is allowed to have either VCC to VL or VL to VCC data transfer direction independently and no direction pin is required. ST2378E operates at guaranteed data rate of 13Mbps over the entire specified operating voltage range. Among the other features is included the OE pin which allows disable-mode operation whereby current consumption is reduced to less than 1µA. Order codes Part number Temperature range Package Comments ST2378EBJR -40 to 85 °C Flip-Chip20 (Tape and Reel) 3000 parts per reel ST2378ETTR -40 to 85 °C TSSOP20 (Tape and Reel) 2500 parts per reel April 2006 Rev 1 1/22 www.st.com 22 Contents ST2378E Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 6 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 2/22 ST2378E Block diagram 1 Block diagram Figure 1. Block diagram Figure 2. Functional diagram (1 I/O line) 3/22 Pin settings ST2378E 2 Pin settings 2.1 Pin connection Figure 3. Pin connection Flip-Chip20 (Bottom view) Bump side 2.2 TSSOP20 (Top view) Pin description Table 1. Pin description 4/22 Flip-Chip20 Pin N° TSSOP20 Pin N° Symbol Name and function E2, D1, D2, C1, C2, B1, B2, A1 2, 18, 4, 16, 6, 14, 8, 12 I/OVL1 to I/OVL8 Data Inputs/Outputs E3, D4, D3, C4, C3, B4, B3, A4 19, 3, 17, 5, 15, 7, 13, 9 I/OVCC1 to I/OVCC8 Data Inputs/Outputs A2 11 OE Output Enable Inputs A3 10 GND Ground (0V) E1 1 VL Positive Supply Voltage E4 20 VCC Positive Supply Voltage ST2378E Electrical data 3 Electrical data 3.1 Maximum ratings Table 2. Absolute maximum rating Symbol Parameter Value Unit VL Supply Voltage -0.3 to VCC V VCC Supply Voltage -0.3 to +7.0 V VOE DC Control Input Voltage -0.3 to +7.0 V -0.3 to VL + 0.3 V -0.3 to V CC + 0.3 V DC Input Diode Current (OE Control Pin) − 20 mA IIOVL DC Output Current ± 25 mA IIOVCC DC Output Current ± 25 mA Continuous mA ± 100 mA VI/OVL VI/OVCC IIK ISCTOUT ICCB DC I/OVL Input Voltage (OE = Gnd or VL) DC I/OVCC Input Voltage (OE = Gnd or V L) Short Circuit Duration I/OVL, I/OVCC Driven from 40mA Source DC VCC or Ground Current Pd Power Dissipation (1) 500 mW Tstg Storage Temperature -65 to +150 °C TL Lead Temperature (10 sec) 300 °C 1. 500mW: ≅ 65°C derated to 300mW by 10mW/°C: 65°C to 85°C 5/22 Electrical data 3.2 ST2378E Recommended operating conditions Table 3. Recommended operating conditions Symbol Parameter Unit VL Supply Voltage 1.71 to VCC V VCC Supply Voltage 1.71 to 5.5 V Input Voltage (OE Output Enable Pin, VL Power Supply referred) 0 to 5.5 V I/OVL Voltage 0 to VL V I/OVCC Voltage 0 to VCC V Operating Temperature -40 to 85 °C 0 to 10 ns/V 1.71 < V L < VCC < 5V 0 to 10 ns/V VCC = VL = 5V 0 to 3 ns/V VI VI/OVL VI/OVCC Top dt/dv Input Rise and Fall Time (OE Control Pin) (1) dt/dv Input Rise and Fall Time (2) 1. VOE from 10% VL to 90%VL 2. VIOVL from 10%VL to 90%VL; VIOVCC from 10%VCC to 90%VCC 6/22 Value ST2378E 4 Electrical characteristics Electrical characteristics Table 4. DC Specification Test Condition Symbol VIHL VILL VIHC VILC Parameter TA = 25 °C -40 to 85 °C VL(*) (V) VCC(*) (V) 1.8 VL to 5.5 VL-0.2 VL-0.2 2.5 VL to 5.5 0.75VL 0.75VL 3.3 VL to 5.5 0.75VL 0.75VL 5.0 VL to 5.5 0.75VL 0.75VL 1.8 VL to 5.5 0.15 0.15 2.5 VL to 5.5 0.30 0.30 3.3 VL to 5.5 0.30 0.30 5.0 VL to 5.5 0.30 0.30 1.8 VL to 5.5 VL-0.2 VL-0.2 2.5 VL to 5.5 0.75VCC 0.75VCC 3.3 VL to 5.5 0.75VCC 0.75VCC 5.0 VL to 5.5 0.75VCC 0.75VCC 1.8 VL to 5.5 0.15 0.15 2.5 VL to 5.5 0.30 0.30 3.3 VL to 5.5 0.30 0.30 5.0 VL to 5.5 0.30 0.30 High Level Input Voltage (I/O VL) Min. Typ Max. Min. Unit Max. V Low Level Input Voltage (I/O VL) V High Level Input Voltage (I/O VCC) Low Level Input Voltage (I/O VCC) Value V V 7/22 Electrical characteristics ST2378E Table 4. DC Specification Test Condition Symbol VIH-TS VIL-TS VOHL Parameter VOLL VOHC High Level Output Voltage I/OVCC 1.8 VL to 5.5 VL-0.2 VL-0.2 2.5 VL to 5.5 0.75VL 0.75VL 3.3 VL to 5.5 0.75VL 0.75VL 5.0 VL to 5.5 0.75VL 0.75VL 1.8 VL to 5.5 0.15 0.15 2.5 VL to 5.5 0.25V L 0.25VL 3.3 VL to 5.5 0.25V L 0.25VL 5.0 VL to 5.5 0.25V L 0.25VL Min. Typ Max. Min. Unit Max. V V IO=-20 µA I/O VCC≥VCC-0.2 1.8 to 5.5 VL to 5.5 1.8 to 5.5 VL to 5.5 VOLC ITSL Control Input Leakage Current (OE) 1.8 to 5.5 VL to 5.5 ITS-LKG High Impedance Input Leakage Current (IO VL, I/OVCC) 1.8 to 5.5 VL to 5.5 IQVCC Quiescent Supply Current VCC 1.8 to 5.5 VL to 5.5 0.67VL 0.67VL V IO=1.0 mA I/O VCC≤0.15V IO=-20 µA I/O VL≥VL-0.2 Low Level Output Voltage I/OVCC 8/22 -40 to 85 °C VCC(*) (V) Low Level Input Voltage (OE) Low Level Output Voltage I/OVL TA = 25 °C VL(*) (V) High Level Input Voltage (OE) High Level Output Voltage I/OVL Value 0.40 0.67VCC 0.40 0.67VCC V IO=1.0 mA I/O VL≤0.15V 0.40 0.40 1 1 µA 1 1 µA 1 10 µA VI=GNDor5.5 OE = GND I/O VL, I/OVCC unconnected 0.1 ST2378E Electrical characteristics Table 4. DC Specification Test Condition Symbol Parameter VL(*) (V) VCC(*) (V) Quiescent Supply Current VL 1.8 to 5.5 VL to 5.5 ITS-VCC High Impedance Mode Quiescent Supply Current VCC 1.8 to 5.5 VL to 5.5 ITS-VL High Impedance Mode Quiescent Supply Current VL 1.8 to 5.5 VL to 5.5 IQVL Note: Value TA = 25 °C Min. I/O VL, I/OVCC unconnected -40 to 85 °C Min. Unit Typ Max. Max. 13 20 100 µA 1 1 µA 1 1 µA OE= GND OE= GND I/O VL=GND to VL I/O VCC = GND to VCC 1 Typical values are referred to TA = 25°C 2 Power Supply Range: VL, VCC 1.8V ± 5%, 2.5 ± 0.2V, 3.3 ± 0.3V, 5.0 ± 0.5V 3 For normal operation, ensure VL < (VCC + 0.3V). During power-up, VL > (VCC + 0.3V) will not damage the device 9/22 Electrical characteristics ST2378E Table 5. AC Electrical characteristics (totem pole driving) Symbol Parameter Test Condition (1) Value CL=15pF tr=tf ≤ 6ns Driver output -40 to +85 °C Unit RT ≤ 50Ω (2) tRVCC tFCC tRVL tFVL Rise Time Fall Time I/OVCC(3)(8) I/OVCC(3)(8) Rise Time I/OVL(3)(8) Fall Time I/OVL (3)(8) tPLH tIOVL-VCC Propagation Delay Time(4) I/OVL-LH to I/OVCC-LH I/OVL-HL to I/O VCC-HL tPHL 10/22 VL (V) (3) VCC (V) (3) 1.8 Typ. (4) Max. 1.8 11 15 1.8 2.5 11 15 1.8 3.3 10 15 1.8 5.0 9 15 2.5 3.3 8 15 1.8 1.8 6 15 1.8 2.5 7 15 1.8 3.3 8 15 1.8 5.0 10 15 2.5 3.3 6 15 1.8 1.8 12 15 1.8 2.5 10 15 1.8 3.3 9 15 1.8 5.0 10 15 2.5 3.3 7 15 1.8 1.8 7 15 1.8 2.5 6 15 1.8 3.3 6 15 1.8 5.0 7 15 2.5 3.3 4 15 1.8 1.8 6 15 1.8 2.5 7 15 1.8 3.3 7 15 1.8 5.0 7 15 2.5 3.3 4 15 1.8 1.8 5 15 1.8 2.5 5 15 1.8 3.3 6 15 1.8 5.0 8 15 2.5 3.3 4 15 Min. ns ns ns ns ns ST2378E Electrical characteristics Table 5. AC Electrical characteristics (totem pole driving) Symbol Parameter Test Condition Value CL=15pF tr=tf ≤ 6ns Driver output -40 to +85 °C Unit RT ≤ 50Ω tPLH tIOVCC-VL Propagation Delay Time(4) I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL tPHL tPZL tPZH tPLZ tPZL tOSLH tOSHL DR Typ. Max. 1.8 2 15 1.8 2.5 2 15 1.8 3.3 2 15 1.8 5.0 2 15 2.5 3.3 2 15 1.8 1.8 5 15 1.8 2.5 5 15 1.8 3.3 5 15 1.8 5.0 6 15 VL (V) VCC (V) 1.8 Min. 2.5 3.3 4 15 1.8 1.8 60 80 1.8 5.0 150 200 Channel to channel Skew Time 1.8 1.8 0.1 1 (6)(7) 1.8 5.0 0.5 1 1.8 to 5.0 VL to 5.0 Output Enable and Disable Time Maximum Data Rate 13 ns ns ns Mbps 1. For normal operation, ensure VL < (VCC + 0.3V). During power-up, VL > (VCC + 0.3V) will not damage the device 2. For VCC = VL = 1.8V, tr = tf ≤ 4ns 3. Power Supply Range: VL, V CC 1.8V ± 5%, 2.5 ± 0.2V, 3.3 ± 0.3V, 5.0 ± 0.5V. 4. Typical values are referred to TA=25°CTypical values are referred to TA=25°C 5. Rise Time:10% to 90%, Fall Time 90% to 10% 6. tpd: 50% to 50% 7. 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| 8. Each translator equally loaded; parameter guaranteed by design 11/22 Electrical characteristics ST2378E Table 6. AC characteristic (open drain driving) Symbol Parameter Test Condition (1) Value CL=15pF tr=tf ≤ 6ns Driver output -40 to +85 °C Unit RT ≤ 50Ω (2) tRVCC Rise Time I/OVCC(3)(8) tFCC Fall Time I/OVCC(3)(8) tRVL Rise Time I/OVL(3)(8) tFVL Fall Time I/O VL(3)(8) tIOVL-VCC tIOVCC-VL tPZL tPZH tPLZ tPZL Propagation Delay Time(4) I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL Propagation Delay Time(4) I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/O VL-HL VL (V) (3) VCC (V) (3) 1.8 Typ. (4) Max. 1.8 210 300 1.8 5.0 59 150 1.8 1.8 12 30 1.8 5.0 20 30 1.8 1.8 210 300 1.8 5.0 96 150 1.8 1.8 11 30 1.8 5.0 11 30 1.8 1.8 210 300 1.8 5.0 100 150 1.8 1.8 7 20 1.8 5.0 14 20 1.8 1.8 210 300 1.8 5.0 57 150 1.8 1.8 7 20 1.8 5.0 8 20 1.8 1.8 60 80 1.8 5.0 150 200 Min. ns ns ns ns tPLH ns tPHL tPLH ns tPHL Output Enable and Disable Time ns tOSLH tOSHL Channel to channel Skew Time 1.8 1.8 10 20 (6)(7) 1.8 5.0 2 10 DR Maximum Data Rate 1.8 to 5.0 VL to 5.0 ns 800 kbps 1. For normal operation, ensure VL < (VCC + 0.3V). During power-up, VL > (VCC + 0.3V) will not damage the device 2. For VCC = VL = 1.8V, tr = tf ≤ 4ns 3. Power Supply Range: VL, V CC 1.8V ± 5%, 2.5 ± 0.2V, 3.3 ± 0.3V, 5.0 ± 0.5V. 4. Typical values are referred to TA=25°C 5. Rise Time:10% to 90%, Fall Time 90% to 10% 6. tpd: 50% to 50% 7. 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| 8. Each translator equally loaded; parameter guaranteed by desig 12/22 ST2378E 5 Test circuit Test circuit Figure 4. Test circuit Table 7. Test circuit switches Switch Test Note: Driving I/OVL Driving I/OVCC Open Drain Driving tPLH, tPHL Open Open Open tPZL, tPLZ VCC VL - tPZH, tPHZ Gnd Gnd - CL = 15/50pF or equivalent (includes jig and probe capacitance) R1 = 1KΩ or equivalent RT = ZOUT of pulse generator (typically 50 Ω) Table 8. Truth table Control Pin 1. Bidirectional Input/Outputs OE I/O VL I/OVCC H (1) H (1) H (2) H (1) L L L Z Z High Level VL Power Supply referred 2. High Level VCC Power Supply referred Note: X= Do not care; Z = High Impedance; 13/22 Waveforms 6 ST2378E Waveforms Table 9. Waveform symbol value Driving I/OVCC Driving I/O VL Symbol VIH VL VL VCC VCC VIM 50% VL 50% VL 50% V CC 50% V CC VOM 50% V CC 50% V CC 50% V CC 50% V CC 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. 14/22 1.8V ≤ VL≤ VCC ≤ 2.5V 3.3V ≤ VL≤ VCC ≤ 5.0V 1.8V ≤ VL≤ VCC ≤ 2.5V 3.3V ≤ VL≤ VCC ≤ 5.0V Waveform - propagation delay (f = 1MHz; 50% duty cycle) ST2378E Figure 6. Waveforms Waveform - output enable and disable time (f = 1MHz; 50% duty cycle) 15/22 Package mechanical data 7 ST2378E 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 16/22 ST2378E Package mechanical data Figure 7. TSSOP20 Mechanical data TSSOP20 MECHANICAL DATA mm. inch DIM. MIN. TYP MAX. A MIN. TYP. MAX. 1.2 A1 0.05 A2 0.8 b 0.047 0.15 0.002 0.004 0.006 1.05 0.031 0.039 0.041 0.19 0.30 0.007 0.012 c 0.09 0.20 0.004 0.0079 D 6.4 6.5 6.6 0.252 0.256 0.260 E 6.2 6.4 6.6 0.244 0.252 0.260 E1 4.3 4.4 4.48 0.169 0.173 0.176 1 e 0.65 BSC K 0˚ L 0.45 A 0.0256 BSC 0.60 8˚ 0˚ 0.75 0.018 8˚ 0.024 0.030 A2 A1 b K e L E c D E1 PIN 1 IDENTIFICATION 1 0087225C 17/22 Package mechanical data Figure 8. ST2378E Flip-Chip20 Mechanical data Flip-Chip20 MECHANICAL DATA mm. mils DIM. MIN. TYP MAX. MIN. TYP. MAX. A 0.81 0.89 1.00 31.9 35.0 39.4 A1 0.15 0.24 0.35 5.9 9.4 13.8 A2 0.65 25.6 b 0.25 0.30 0.35 9.8 11.8 13.8 D 2.41 2.46 2.51 94.9 96.9 98.8 D1 E 2.00 1.93 1.98 78.7 2.03 76.0 78.0 E1 1.5 59.1 e 0.50 19.7 SE 0.25 9.8 79.9 7487339-D 18/22 ST2378E Package mechanical data Figure 9. TSSOP20 Tape and reel Tape & Reel TSSOP20 MECHANICAL DATA mm. inch DIM. MIN. A TYP MAX. MIN. 330 MAX. 12.992 C 12.8 D 20.2 0.795 N 60 2.362 T 13.2 TYP. 0.504 22.4 0.519 0.882 Ao 6.8 7 0.268 0.276 Bo 6.9 7.1 0.272 0.280 Ko 1.7 1.9 0.067 0.075 Po 3.9 4.1 0.153 0.161 P 11.9 12.1 0.468 0.476 19/22 Package mechanical data ST2378E Figure 10. Flip-Chip20 Tape and reel Tape & Reel Flip-Chip20 MECHANICAL DATA mm. inch DIM. MIN. TYP A MIN. TYP. 180 13.2 MAX. 7.086 C 12.8 D 20.2 0.795 N 60 2.362 T 20/22 MAX. 0.504 0.519 14.4 0.567 Ao 2.13 2.23 2.33 0.084 0.088 0.092 Bo 2.62 2.72 2.82 0.103 0.107 0.111 Ko 1.05 1.15 1.25 0.041 0.045 0.049 Po 3.9 4.1 0.153 0.161 P 3.9 4.1 0.153 0.161 ST2378E 8 Revision history Revision history Table 10. Revision history Date Revision 10-Apr-2006 1 Changes Initial release. 21/22 ST2378E Please Read Carefully: Information in this document is provided solely in connection with ST products. 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