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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 = 85C - VL = 1.8V - VCC = 5.5V Guaranteed data rate: - 13Mbps (1.8V VL VCC 5.5V) Low power dissipation: - ITS-VL = ITS-VCC = 1A (Max.) at TA = 85C - IQVL = 100A (Max.) at TA = 85C - IQCC = 10A (Max.) at TA = 85C Output impedance: - |IOHA| = 20A(Min.) at VL=1.8V; VCC = 5.5V - IOLA = 1.0A(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
Flip-Chip20 TSSOP20
Description
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 1A.

Order codes
Part number ST2378EBJR ST2378ETTR Temperature range -40 to 85 C -40 to 85 C Package Flip-Chip20 (Tape and Reel) TSSOP20 (Tape and Reel) Comments 3000 parts per reel 2500 parts per reel
April 2006
Rev 1
1/22
www.st.com 22
Contents
ST2378E
Contents
1 2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 2.2 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 3.2 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Recommended operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 5 6 7 8
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
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ST2378E
Block diagram
1
Block diagram
Figure 1.
Block diagram
Figure 2.
Functional diagram (1 I/O line)
3/22
Pin settings
ST2378E
2
2.1
Pin settings
Pin connection
Figure 3. Pin connection
Flip-Chip20 (Bottom view) Bump side
TSSOP20 (Top view)
2.2
Pin description
Table 1. Pin description
Flip-Chip20 Pin N E2, D1, D2, C1, C2, B1, B2, A1 E3, D4, D3, C4, C3, B4, B3, A4 A2 A3 E1 E4 TSSOP20 Pin N 2, 18, 4, 16, 6, 14, 8, 12 Symbol I/OVL1 to I/OVL8 Name and function Data Inputs/Outputs Data Inputs/Outputs Output Enable Inputs Ground (0V) Positive Supply Voltage Positive Supply Voltage
19, 3, 17, 5, 15, 7, 13, 9 I/OVCC1 to I/OVCC8 11 10 1 20 OE GND VL VCC
4/22
ST2378E
Electrical data
3
3.1
Electrical data
Maximum ratings
Table 2. Absolute maximum rating
Symbol VL VCC VOE VI/OVL VI/OVCC IIK IIOVL IIOVCC ISCTOUT ICCB Pd Tstg TL Supply Voltage Supply Voltage DC Control Input Voltage DC I/OVL Input Voltage (OE = Gnd or VL) DC I/OVCC Input Voltage (OE = Gnd or V L) DC Input Diode Current (OE Control Pin) DC Output Current DC Output Current Short Circuit Duration I/OVL, I/OVCC Driven from 40mA Source DC VCC or Ground Current Power Dissipation (1) Storage Temperature Lead Temperature (10 sec) Parameter Value -0.3 to VCC -0.3 to +7.0 -0.3 to +7.0 -0.3 to VL + 0.3 -0.3 to V CC + 0.3 - 20 25 25 Continuous 100 500 -65 to +150 300 Unit V V V V V mA mA mA mA mA mW C C
1. 500mW: 65C derated to 300mW by 10mW/C: 65C to 85C
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Electrical data
ST2378E
3.2
Recommended operating conditions
Table 3. Recommended operating conditions
Symbol VL VCC VI VI/OVL VI/OVCC Top dt/dv dt/dv Supply Voltage Supply Voltage Input Voltage (OE Output Enable Pin, VL Power Supply referred) I/OVL Voltage I/OVCC Voltage Operating Temperature Input Rise and Fall Time (OE Control Pin) (1) Input Rise and Fall Time (2) 1.71 < V L < VCC < 5V VCC = VL = 5V Parameter Value 1.71 to VCC 1.71 to 5.5 0 to 5.5 0 to VL 0 to VCC -40 to 85 0 to 10 0 to 10 0 to 3 Unit V V V V V C ns/V ns/V ns/V
1. VOE from 10% VL to 90%VL 2. VIOVL from 10%VL to 90%VL; VIOVCC from 10%VCC to 90%VCC
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ST2378E
Electrical characteristics
4
Electrical characteristics
Table 4. DC Specification
Test Condition Symbol Parameter VL(*) (V) 1.8 2.5 VIHL High Level Input Voltage (I/O VL) 3.3 5.0 1.8 2.5 VILL Low Level Input Voltage (I/O VL) 3.3 5.0 1.8 2.5 VIHC High Level Input Voltage (I/O VCC) 3.3 5.0 1.8 2.5 VILC Low Level Input Voltage (I/O VCC) 3.3 5.0 VCC(*) (V) VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL-0.2 0.75VCC 0.75VCC 0.75VCC 0.15 0.30 0.30 0.30 TA = 25 C Min. VL-0.2 0.75VL 0.75VL 0.75VL 0.15 0.30 0.30 0.30 VL-0.2 0.75VCC V 0.75VCC 0.75VCC 0.15 0.30 V 0.30 0.30 Typ Max. Value -40 to 85 C Min. VL-0.2 0.75VL V 0.75VL 0.75VL 0.15 0.30 V 0.30 0.30 Max. Unit
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Electrical characteristics Table 4. DC Specification
Test Condition Symbol Parameter VL(*) (V) 1.8 2.5 VIH-TS High Level Input Voltage (OE) 3.3 5.0 1.8 2.5 VIL-TS Low Level Input Voltage (OE) 3.3 5.0 High Level Output Voltage I/OVL Low Level Output Voltage I/OVL High Level Output Voltage I/OVCC Low Level Output Voltage I/OVCC Control Input Leakage Current (OE) High Impedance Input Leakage Current (IO VL, I/OVCC) Quiescent Supply Current VCC VCC(*) (V) VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 VL to 5.5 IO=-20 A I/O VCCVCC-0.2 1.8 to 5.5 VL to 5.5 IO=1.0 mA I/O VCC0.15V IO=-20 A I/O VLVL-0.2 1.8 to 5.5 VL to 5.5 IO=1.0 mA I/O VL0.15V VI=GNDor5.5 1 OE = GND 1.8 to 5.5 VL to 5.5 I/O VL, I/OVCC unconnected 1 0.67VL TA = 25 C Min. VL-0.2 0.75VL 0.75VL 0.75VL 0.15 0.25V L 0.25V L 0.25V L Typ Max. Value
ST2378E
-40 to 85 C Min. VL-0.2 0.75VL Max.
Unit
V 0.75VL 0.75VL 0.15 0.25VL V 0.25VL 0.25VL
VOHL
0.67VL V 0.40 0.40
VOLL
VOHC
0.67VCC
0.67VCC V 0.40 0.40
VOLC
ITSL
1.8 to 5.5
VL to 5.5
1
A
ITS-LKG
1
A
IQVCC
1.8 to 5.5
VL to 5.5
0.1
1
10
A
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ST2378E Table 4. DC Specification
Test Condition Symbol Parameter VL(*) (V) 1.8 to 5.5 VCC(*) (V) VL to 5.5 I/O VL, I/OVCC unconnected OE= GND 1.8 to 5.5 VL to 5.5 OE= GND I/O VL=GND to VL I/O VCC = GND to VCC TA = 25 C Min. Typ 13
Electrical characteristics
Value -40 to 85 C Max. 20 Min. Max. 100 A Unit
IQVL
Quiescent Supply Current VL High Impedance Mode Quiescent Supply Current VCC High Impedance Mode Quiescent Supply Current VL
ITS-VCC
1
1
A
ITS-VL
1.8 to 5.5
VL to 5.5
1
1
A
Note:
1 2 3
Typical values are referred to TA = 25C Power Supply Range: VL, VCC 1.8V 5%, 2.5 0.2V, 3.3 0.3V, 5.0 0.5V For normal operation, ensure VL < (VCC + 0.3V). During power-up, VL > (VCC + 0.3V) will not damage the device
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Electrical characteristics Table 5. AC Electrical characteristics (totem pole driving)
Test Condition (1) Symbol Parameter CL=15pF tr=tf 6ns Driver output RT 50 (2) VL (V) (3) 1.8 1.8 tRVCC Rise Time I/OVCC(3)(8) 1.8 1.8 2.5 1.8 1.8 tFCC Fall Time I/OVCC(3)(8) 1.8 1.8 2.5 1.8 1.8 tRVL Rise Time I/OVL(3)(8) 1.8 1.8 2.5 1.8 1.8 tFVL Fall Time I/OVL
(3)(8)
ST2378E
Value -40 to +85 C Min. Typ. (4) 11 11 10 9 8 6 7 8 10 6 12 10 9 10 7 7 6 6 7 4 6 7 7 7 4 5 5 6 8 4 Max. 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 15 ns ns ns ns ns Unit
VCC (V) (3) 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3
1.8 1.8 2.5 1.8 1.8 tPLH 1.8 1.8 2.5 1.8 1.8 tPHL 1.8 1.8 2.5
tIOVL-VCC
Propagation Delay Time(4) I/OVL-LH to I/OVCC-LH I/OVL-HL to I/O VCC-HL
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ST2378E Table 5. AC Electrical characteristics (totem pole driving)
Test Condition Symbol Parameter CL=15pF tr=tf 6ns Driver output RT 50 VL (V) 1.8 1.8 tPLH Propagation Delay Time(4) I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/OVL-HL tPHL 1.8 1.8 tIOVCC-VL 2.5 1.8 1.8 1.8 1.8 2.5 tPZL tPZH tPLZ tPZL tOSLH tOSHL DR Output Enable and Disable Time Channel to channel Skew Time
(6)(7)
Electrical characteristics
Value -40 to +85 C
Unit Max. 15 15 15 15 15 15 15 15 15 15 80 200 1 1 ns ns Mbps ns
VCC (V) 1.8 2.5 3.3 5.0 3.3 1.8 2.5 3.3 5.0 3.3 1.8 5.0 1.8 5.0 VL to 5.0
Min.
Typ. 2 2 2 2 2 5 5 5 6 4 60 150 0.1 0.5
1.8 1.8 1.8 1.8 1.8 to 5.0
Maximum Data Rate
13
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=25CTypical values are referred to TA=25C 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
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Electrical characteristics
ST2378E
Table 6. AC characteristic (open drain driving)
Test Condition (1) CL=15pF tr=tf 6ns Driver output RT 50 (2) VL (V) (3) tRVCC Rise Time I/OVCC(3)(8) Fall Time I/OVCC(3)(8) Rise Time I/OVL(3)(8) Fall Time I/O VL(3)(8) 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 tPLH 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 1.8 Output Enable and Disable Time 1.8 Channel to channel Skew Time
(6)(7)
Value
Symbol
Parameter
-40 to +85 C
Unit
VCC (V) (3) 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 1.8 5.0 VL to 5.0
Min.
Typ. (4) 210 59 12 20 210 96 11 11 210 100 7 14 210 57 7 8 60 150 10 2
Max. 300 ns 150 30 ns 30 300 ns 150 30 ns 30 300 150 ns 20 20 300 150 ns 20 20 80 ns 200 20 ns 10 kbps
tFCC
tRVL
tFVL
tIOVL-VCC
Propagation Delay Time(4) I/OVL-LH to I/OVCC-LH I/OVL-HL to I/OVCC-HL
tPHL
tIOVCC-VL
Propagation Delay Time(4) I/OVCC-LH to I/OVL-LH I/OVCC-HL to I/O VL-HL
tPLH
tPHL
tPZL tPZH tPLZ tPZL tOSLH tOSHL DR
1.8 1.8 1.8 to 5.0
Maximum Data Rate
800
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=25C 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
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ST2378E
Test circuit
5
Test circuit
Figure 4. Test circuit
Table 7. Test circuit switches
Switch Test tPLH, tPHL tPZL, tPLZ tPZH, tPHZ Driving I/OVL Open VCC Gnd Driving I/OVCC Open VL Gnd Open Drain Driving Open -
Note:
CL = 15/50pF or equivalent (includes jig and probe capacitance) R1 = 1K or equivalent RT = ZOUT of pulse generator (typically 50) Table 8. Truth table
Control Pin OE H (1) H (1) L
1. High Level VL Power Supply referred
Bidirectional Input/Outputs I/O VL H (1) L Z I/OVCC H (2) L Z
2. High Level VCC Power Supply referred
Note:
X= Do not care; Z = High Impedance;
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Waveforms
ST2378E
6
Waveforms
Table 9. Waveform symbol value
Driving I/O VL Symbol VIH VIM VOM VX VY Driving I/OVCC 1.8V VL VCC 2.5V 3.3V VL VCC 5.0V 1.8V VL VCC 2.5V 3.3V VL VCC 5.0V VL 50% VL 50% V CC VOL +0.15V VOH -0.15V VL 50% VL 50% V CC VOL +0.3V VOH -0.3V VCC 50% V CC 50% V CC VOL +0.15V VOH -0.15V VCC 50% V CC 50% V CC VOL +0.3V VOH -0.3V
Figure 5.
Waveform - propagation delay (f = 1MHz; 50% duty cycle)
14/22
ST2378E
Waveforms
Figure 6.
Waveform - output enable and disable time (f = 1MHz; 50% duty cycle)
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Package mechanical data
ST2378E
7
Package mechanical data
In order to meet environmental requirements, ST offers these devices in ECOPACK(R) 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
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ST2378E Figure 7. TSSOP20 Mechanical data
Package mechanical data
TSSOP20 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.45 0.60 0.05 0.8 0.19 0.09 6.4 6.2 4.3 6.5 6.4 4.4 0.65 BSC 8 0.75 0 0.018 0.024 1 TYP MAX. 1.2 0.15 1.05 0.30 0.20 6.6 6.6 4.48 0.002 0.031 0.007 0.004 0.252 0.244 0.169 0.256 0.252 0.173 0.0256 BSC 8 0.030 0.004 0.039 MIN. TYP. MAX. 0.047 0.006 0.041 0.012 0.0079 0.260 0.260 0.176 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
0087225C
17/22
Package mechanical data Figure 8. Flip-Chip20 Mechanical data
ST2378E
Flip-Chip20 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b D D1 E E1 e SE 1.93 0.25 2.41 0.81 0.15 TYP 0.89 0.24 0.65 0.30 2.46 2.00 1.98 1.5 0.50 0.25 2.03 76.0 0.35 2.51 9.8 94.9 MAX. 1.00 0.35 MIN. 31.9 5.9 TYP. 35.0 9.4 25.6 11.8 96.9 78.7 78.0 59.1 19.7 9.8 79.9 13.8 98.8 MAX. 39.4 13.8 mils
7487339-D
18/22
ST2378E Figure 9. TSSOP20 Tape and reel
Package mechanical data
Tape & Reel TSSOP20 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 6.8 6.9 1.7 3.9 11.9 12.8 20.2 60 22.4 7 7.1 1.9 4.1 12.1 0.268 0.272 0.067 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 0.882 0.276 0.280 0.075 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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Package mechanical data Figure 10. Flip-Chip20 Tape and reel
ST2378E
Tape & Reel Flip-Chip20 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 2.13 2.62 1.05 3.9 3.9 2.23 2.72 1.15 12.8 20.2 60 14.4 2.33 2.82 1.25 4.1 4.1 0.084 0.103 0.041 0.153 0.153 0.088 0.107 0.045 TYP MAX. 180 13.2 0.504 0.795 2.362 0.567 0.092 0.111 0.049 0.161 0.161 MIN. TYP. MAX. 7.086 0.519 inch
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ST2378E
Revision history
8
Revision history
Table 10. Revision history
Date 10-Apr-2006 Revision 1 Initial release. Changes
21/22
ST2378E
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