ST ST2378E User Manual

ST2378E

8-bit dual supply 1.71V to 5.5V level translator

General features

■ High speed:

–t

= 15ns (Max.) at TA = 85°C

PD

–V

= 1.8V

L

–V

■ Guaranteed data rate:

–13Mbps (1.8V

■ Low power dissipation:

–I –I –I

■ Output impedance:

–|I –I

■ Bi-directional level translation

■ Totem pole and open drain driving for I

communications

■ 5V tolerant on enable pin

■ Wide operating voltage range:

–V –VCC(Opr) = 1.71V to 5.5V

■ ESD performance

■ HBM > 15KV ESD protection on I/OV

■ Leadfree Flip-Chip and TSSOP packages

= 5.5V

CC

≤ V

≤ VCC ≤ 5.5V)

L

= I

TS-VL

= 100µA (Max.) at TA = 85°C

QVL

= 10µA (Max.) at TA = 85°C

QCC

| = 20µA(Min. ) a t VL=1.8V; V

OHA

= 1.0µA(Min.) at VL=1.8V V

OLA

(Opr) = 1.71V to V

L

= 1µA (Max.) at TA = 85°C

TS-VCC

CC

CC CC

2

CC

with I/O V

= 5.5V = 5.5V

C

lines

± 15KV ESD protection

CC

TSSOP20 Flip-Chip20

Description

The ST2378E is an 8-bit, dual supply, bi-directional level translator with ±15kV ESDprotection on I/Os at V interface data transfer between low-voltage ASICs/PLDs and higher voltage systems. Externally applied voltage, V levels at both sides with range specified as

1.71V ≤ V

≤ 5.5V and VL ≤ V

L

proper operation, V VL.

Utilizing a transmission-gate-based design, this device allows bi-directional asynchronous data transfer, which means each channel is allowed to have either V

to VL or VL to VCC data transfer

CC

direction independently and no direction pin is required. ST2378E operates at guaranteed data rate of 13Mbps over the entire specified operating voltage range.

side. It is designed to

CC

and VL, set logic

CC

≤ 5.5V. For

should be set higher than

CC

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 200 6 Rev 1 1/22

www.st.com

22

Contents ST2378E

Contents

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

3 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

(Bottom view) Bump side

2.2 Pin description

Table 1. Pin description

Flip-Chip20 Pin N° TSSOP20 Pin N° Symbol Name and function

E2, D1, D2, C1, C2, B1,

B2, A1

E3, D4, D3, C4, C3, B4,

B3, A4

A2 11 OE Output Enable Inputs A3 10 GND Ground (0V) E1 1

E4 20

Flip-Chip20

2, 18, 4, 16, 6, 14, 8, 12

19, 3, 17, 5, 15, 7, 13, 9

I/O

VCC1

TSSOP20 (Top view)

to I/O

VL1

to I/O

V

L

V

CC

VL8

VCC8

Data Inputs/Outputs

Positive Supply Voltage Positive Supply Voltage

4/22

ST2378E Electrical data

3 Electrical data

3.1 Maximum ratings

Table 2. Absolute maximum rating

Symbol Parameter Value Unit

V

Supply Voltage

L

V V

V

I/OVL

V

I/OVCC

I

IOVL

I

IOVCC

I

SCTOUT

I

CCB

T

1. 500mW: ≅ 65°C derated to 300mW by 10mW/°C: 65°C to 85°C

Supply Voltage -0.3 to +7.0 V

CC

DC Control Input Voltage -0.3 to +7.0 V

OE

DC I/OVL Input Voltage (OE = Gnd or VL)-0.3 to V DC I/O

I

DC Input Diode Current (OE Control Pin) − 20 mA

IK

Input Vol tage (OE = Gnd or VL) -0.3 to VCC + 0.3

VCC

DC Output Current ± 25 mA DC Output Current ± 25 mA Short Ci rc u it D u ra ti on I/OVL, I/O

Driven from 40mA

VCC

Source DC VCC or Ground Current

P

Power Dissipation

d

Storage Temperature -65 to +150 °C

stg

T

Lead Temperature (10 sec) 300 °C

L

(1)

-0.3 to V

L

CC

+ 0.3

V

V V

Continuous mA

± 100 mA

500 mW

5/22

Electrical data ST2378E

3.2 Recommended operating conditions

Table 3. Recommended operating conditions

Symbol Parameter Value Unit

V

I/OVL

V

I/OVCC

T

dt/dv

Supply Voltage

L

Supply Voltage 1.71 to 5.5 V

CC

Input Voltage (OE Output Enable Pin, VL Power Supply

V

I

referred) I/OVL Voltage 0 to V

I/O

Voltage 0 to V

VCC

Operating Temperature -40 to 85 °C

op

Input Rise and Fall Time (OE Control Pin)

(1)

1.71 to V

CC

0 to 5.5 V

L

CC

0 to 10 ns/V

V

V V

1. V

2. V

dt/dv

Input Rise an d Fall T ime

from 10% VL to 90%V

OE

from 10%VL to 90%VL; V

IOVL

1.71 < VL < VCC < 5V

(2)

V

= VL = 5V

CC

L

from 10%VCC to 90%V

IOVCC

CC

0 to 10 ns/V

0 to 3 ns/V

6/22

ST2378E Electrical characteristics

4 Electrical characteristics

Table 4. DC Specification

Test Condition Value

T

Symbol Parameter

V

High Level Input

IHL

Voltage (I/O

VL

V

L(*)

CC(*)

(V)

1.8

2.5

)

3.3

5.0

1.8

V

(V)

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

to

0.75V

= 25 °C

A

-40 to 85 °C

Min. Typ Max. Min. Max.

V

-0.2 VL-0.2

L

0.75V

L

0.15 0.15

Unit

V

to

V

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

L

5.5

to

0.30 0.30

V

-0.2 VL-0.2

L

0.75V

CC

0.75V

CC

0.75V

CC

0.15 0.15

0.30 0.30

0.75V

V

CC

V

CC

V

Low Level Input

ILL

Voltage (I/O

VL

)

3.3

5.0

1.8

2.5

V

High Level Input

IHC

Voltage (I/O

VCC

)

3.3

5.0

1.8

2.5

V

Low Level Input

ILC

Voltage (I/O

VCC

)

3.3

5.0

V

L

5.5

to

0.30 0.30

7/22