1/14
February 2004
s
HIGH SPEED: t
PD
= 15ns (MAX.) at T
A
= 85C
V
L
= 1.8V; V
CC
= 5.5V
s
GUARANTEED DATA RATE:
13Mbps (1.8V
V
L
V
CC
5.5V)
s
LOW POWER DISSIPATION:
I
TS-VL
= I
TS-VCC
= 1
A (MAX.) at T
A
= 85C
I
QVL
= 100
A (MAX.) at T
A
= 85C
I
QCC
= 10
A (MAX.) at T
A
= 85C
s
OUTPUT IMPEDANCE:
|I
OHA
| = 20
A (MIN.) at V
L
=1.8V V
CC
=5.5V
I
OLA
= 1.0 mA (MIN.) at V
L
=1.8V V
CC
=5.5V
s
BIDIRECTIONAL LEVEL TRANSLATION
s
TOTEM POLE AND OPEN DRAIN DRIVING
FOR I
2
C COMMUNICATIONS
s
5V TOLERANT ON ENABLE PIN
s
THERMAL SHORT-CIRCUIT PROTECTION
s
WIDE OPERATING VOLTAGE RANGE:
V
L
(OPR) = 1.71V to V
CC
V
CC
(OPR) = 1.71V to 5.5V
s
ESD PERFORMANCE:
HBM > 15KV ESD PROTECTION ON I/O
VCC
LINES
s
LEADFREE FLIPCHIP AND TSSOP PACKAGES
DESCRIPTION
The ST2378E is a 15kV ESD-protected level
translator providing the level shifting necessary to
allow data transfer in a multi-voltage system.
Externally applied voltages, V
CC
and V
L
, set the
logic levels on either side of the device. It utilizes a
transmission-gate-based design to allow data
translation in either direction (V
L
<-> V
CC
) on any
single data line. The ST2378E accepts V
L
from
+1.71V to V
CC
and V
CC
from +1.71V to +5.5V,
making them ideal for data transfer between
low-voltage
ASICs/PLDs
and
higher
voltage
systems. The ST2378E has a three-state output
mode that reduces supply current to less than
1A, thermal short-circuit protection, and 15kV
ESD protection on the V
CC
side for greater
protection
in applications that route signals
externally.
The ST2378E operates at a guaranteed data rate
of 13Mbps over the entire specified operating
voltage range. Within specific voltage domains,
higher data rates are possible.
ST2378E
8-BIT DUAL SUPPLY 1.71V TO 5.5V LEVEL TRANSLATOR
WITH I/OV
CC
15KV ESD PROTECTION
BLOCK DIAGRAM
TSSOP
Flip-Chip
ST2378E
2/14
FUNCTIONAL DIAGRAM (1 I/O LINE)
ORDERING CODES
PIN DESCRIPTION
PIN CONFIGURATION
Type
Temperature
Range
Package
Comments
ST2378EBJR
-40 to 85 C
Flip-Chip20 (Tape & Reel)
3000 parts per reel
ST2378ETTR
-40 to 85 C
TSSOP20 (Tape & Reel)
2500 parts per reel
FLIPCHIP20 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/O
VL1
to I/O
VL8
Data Inputs/Outputs
E3, D4, D3, C4, C3, B4, B3, A4
19, 3, 17, 5, 15, 7, 13, 9
I/O
VCC1
to I/O
VCC8
Data Inputs/Outputs
A2
11
OE
Output Enable Inputs
A3
10
GND
Ground (0V)
E1
1
V
L
Positive Supply Voltage
E4
20
V
CC
Positive Supply Voltage
TSSOP (Top View)
Flip-Chip (Bottom View)
Bump Side
ST2378E
3/14
TRUTH TABLE
X=Don't care; Z=High Impedance;
1) High Level V
L
Power Supply referred
2) High Level V
CC
Power Supply referred
3) Thermal Protection disabled reduces the quiescent current consumption I
TS-VCC
=I
TS-VL
= 1
A Max at 85C
ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
(*) 500mW:
65C derated to 300mW by 10mW/C: 65C to 85C
RECOMMENDED OPERATING CONDITIONS
1) V
OE
from 10% V
L
to 90%V
L
2) V
IOVL
from 10%V
L
to 90%V
L
; V
IOVCC
from 10%V
CC
to 90%V
CC
Control Pin
Bidirectional Input/Outputs
Thermal Protection
OE
I/O
VL
I/O
VCC
H
(1)
H
(1)
H
(2)
Enabled
H
(1)
L
L
Enabled
L
Z
Z
Disabled
(3)
Symbol
Parameter
Value
Unit
V
L
Supply Voltage
-0.3 to V
CC
V
V
CC
Supply Voltage
-0.3 to +7.0
V
V
OE
DC Control Input Voltage
-0.3 to +7.0
V
V
I/OVL
DC I/O
VL
Input Voltage (OE = Gnd or V
L
)
-0.3 to V
L
+ 0.3
V
V
I/OVCC
DC I/O
VCC
Input Voltage (OE = Gnd or V
L
)
-0.3 to V
CC
+ 0.3
V
I
IK
DC Input Diode Current (OE Control Pin)
-
20
mA
I
IOVL
DC Output Current
25
mA
I
IOVCC
DC Output Current
25
mA
I
SCTOUT
Short Circuit Duration I/O
VL
, I/O
VCC
Driven from 40mA Source
Continuous
mA
I
CCB
DC V
CC
or Ground Current
100
mA
P
d
Power Dissipation(*)
500
mW
T
stg
Storage Temperature
-65 to +150
C
T
L
Lead Temperature (10 sec)
300
C
Symbol
Parameter
Value
Unit
V
L
Supply Voltage
1.71 to V
CC
V
V
CC
Supply Voltage
1.71 to 5.5
V
V
I
Input Voltage (OE Output Enable Pin, V
L
Power Supply referred)
0 to 5.5
V
V
I/OVL
I/O
VL
Voltage
0 to V
L
V
V
I/OVCC
I/O
VCC
Voltage
0 to V
CC
V
T
op
Operating Temperature
-40 to 85
C
dt/dv
Input Rise and Fall Time (OE Control Pin)
(1)
0 to 10
ns/V
dt/dv
Input Rise and Fall Time (2)
1.71 < V
L
< V
CC
< 5V
0 to 10
ns/V
V
CC
= V
L
= 5V
0 to 3
ns/V
ST2378E
4/14
DC SPECIFICATION
Symbol
Parameter
Test Condition
Value
Unit
V
L(*)
(V)
V
CC(*)
(V)
T
A
= 25 C
-40 to 85 C
Min.
Typ
Max.
Min.
Max.
V
IHL
High Level Input
Voltage (I/O
VL
)
1.8
V
L
to 5.5
V
L
-0.2
V
L
-0.2
V
2.5
V
L
to 5.5
0.75V
L
0.75V
L
3.3
V
L
to 5.5
0.75V
L
0.75V
L
5.0
V
L
to 5.5
0.75V
L
0.75V
L
V
ILL
Low Level Input
Voltage (I/O
VL
)
1.8
V
L
to 5.5
0.15
0.15
V
2.5
V
L
to 5.5
0.30
0.30
3.3
V
L
to 5.5
0.30
0.30
5.0
V
L
to 5.5
0.30
0.30
V
IHC
High Level Input
Voltage (I/O
VCC
)
1.8
V
L
to 5.5
V
L
-0.2
V
L
-0.2
V
2.5
V
L
to 5.5
0.75V
CC
0.75V
CC
3.3
V
L
to 5.5
0.75V
CC
0.75V
CC
5.0
V
L
to 5.5
0.75V
CC
0.75V
CC
V
ILC
Low Level Input
Voltage (I/O
VCC
)
1.8
V
L
to 5.5
0.15
0.15
V
2.5
V
L
to 5.5
0.30
0.30
3.3
V
L
to 5.5
0.30
0.30
5.0
V
L
to 5.5
0.30
0.30
V
IH-TS
High Level Input
Voltage (OE)
1.8
V
L
to 5.5
V
L
-0.2
V
L
-0.2
V
2.5
V
L
to 5.5
0.75V
L
0.75V
L
3.3
V
L
to 5.5
0.75V
L
0.75V
L
5.0
V
L
to 5.5
0.75V
L
0.75V
L
V
IL-TS
Low Level Input
Voltage (OE)
1.8
V
L
to 5.5
0.15
0.15
V
2.5
V
L
to 5.5
0.25V
L
0.25V
L
3.3
V
L
to 5.5
0.25V
L
0.25V
L
5.0
V
L
to 5.5
0.25V
L
0.25V
L
V
OHL
High Level Output
Voltage I/O
VL
1.8 to 5.5 V
L
to 5.5
I
O
=-20
A
I/O
VCC
V
CC
-0.2
0.67V
L
0.67V
L
V
V
OLL
Low Level Output
Voltage I/O
VL
I
O
=1.0 mA
I/O
VCC
0.15V
0.40
0.40
V
OHC
High Level Output
Voltage I/O
VCC
1.8 to 5.5 V
L
to 5.5
I
O
=-20
A
I/O
VL
V
L
-0.2
0.67V
CC
0.67V
CC
V
V
OLC
Low Level Output
Voltage I/O
VCC
I
O
=1.0 mA
I/O
VL
0.15V
0.40
0.40
I
TSL
Control Input
Leakage Current
(OE)
1.8 to 5.5 V
L
to 5.5
V
I
=GNDor5.5
1
1
A
I
TS-LKG
High Impedance
Input Leakage
Current (IO
VL
,
I/O
VCC
)
1.8 to 5.5 V
L
to 5.5
OE = GND
1
1
A
I
QVCC
Quiescent Supply
Current V
CC
1.8 to 5.5 V
L
to 5.5
I/O
VL,
I/O
VCC
unconnected
0.1
1
10
A
I
QVL
Quiescent Supply
Current V
L
1.8 to 5.5 V
L
to 5.5
I/O
VL,
I/O
VCC
unconnected
13
20
100
A
ST2378E
5/14
1) Typical values are referred to T
A
=25C
2) Power Supply Range: V
L
, V
CC
1.8V5%, 2.50.2V, 3.30.3V, 5.00.5V
5) For normal operation, ensure V
L
< (V
CC
+ 0.3V). During power-up, V
L
> (V
CC
+ 0.3V) will not damage the device
AC ELECTRICAL CHARACTERISTICS
1) Typical values are referred to T
A
=25C
2) Power Supply Range: V
L
, V
CC
1.8V5%, 2.50.2V, 3.30.3V, 5.00.5V.
3) Rise Time:10% to 90%, Fall Time 90% to 10%
4) tpd: 50% to 50%
5) For normal operation, ensure V
L
< (V
CC
+ 0.3V). During power-up, V
L
> (V
CC
+ 0.3V) will not damage the device
6) 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 (t
OSLH
= | t
PLHm
- t
PLHn
|, t
OSHL
= | t
PHLm
- t
PHLn
|
7) Each translator equally loaded; parameter guaranteed by design
8) For V
CC
= V
L
= 1.8V, t
r
= t
f
4ns
I
TS-VCC
High Impedance
Mode Quiescent
Supply Current V
CC
1.8 to 5.5 V
L
to 5.5
OE= GND
1
1
A
I
TS-VL
High Impedance
Mode Quiescent
Supply Current V
L
1.8 to 5.5 V
L
to 5.5
OE= GND
I/O
VL
= GND or V
L
I/O
VCC
= GND or
V
CC
1
1
A
Symbol
Parameter
Test Condition
Value
Unit
V
L(*)
(V)
V
CC(*)
(V)
T
A
= 25 C
-40 to 85 C
Min.
Typ
Max.
Min.
Max.
Symbol
Parameter
Test Condition
(5)
Value
Unit
C
L
=15pF t
r
=t
f
6ns
Driver output
R
T
50
(8)
-40 to +85 C
V
L
(V)
(2)
V
CC
(V)
(2)
Min.
Typ.
(1)
Max.
t
RVCC
Rise Time I/O
VCC
(3)(8)
1.8
1.8
11
15
ns
1.8
5.0
9
15
t
FVCC
Fall Time I/O
VCC
(3)
1.8
1.8
6
15
ns
1.8
5.0
10
15
t
RVL
Rise Time I/O
VL
(3)
1.8
1.8
12
15
ns
1.8
5.0
10
15
t
FVL
Fall Time I/O
VL
(3)
1.8
1.8
7
15
ns
1.8
5.0
7
15
t
IOVL-VCC
Propagation Delay Time
(4)
I/O
VL-LH
to I/OV
CC-LH
I/O
VL-HL
to I/OV
CC-HL
t
PLH
1.8
1.8
6
15
ns
1.8
5.0
7
15
t
PHL
1.8
1.8
5
15
1.8
5.0
8
15
t
IOVCC-VL
Propagation Delay Time
(4)
I/OV
CC-LH
to I/O
VL-LH
I/OV
CC-HL
to I/O
VL-HL
t
PLH
1.8
1.8
2
15
ns
1.8
5.0
2
15
t
PHL
1.8
1.8
5
15
1.8
5.0
6
15
t
PZL
t
PZH
t
PLZ
t
PHZ
Output Enable and Disable Time
1.8
1.8
38
60
ns
1.8
5.0
44
60
D
R
Maximum Data Rate
1.8
1.8
13
Mbps
1.8
5.0
13
t
OSLH
t
OSHL
Channel to Channel Skew Time
(note 6, 7)
1.8
1.8
0.1
1
ns
1.8
5.0
0.5
1
ns
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