SGS Thomson Microelectronics ST3384ECDR, ST3384ECD, ST3384EBPR, ST3384EBDR, ST3384EBD Datasheet

±15KV ESD-PROTECTED, 3 TO 5.5V, LOW POWER,

UP TO 250KBPS, RS-232 TRANSCEIVER

■ ESD PROTECTIO FOR RS-232I/O PINS

±15KV (HUMAN BODY MODEL)

■ LATCHUP FREE

■ 1µA LOW P OWER SHUTDOWN

■ 300µA SUP PLY CURRE NT

■ 250Kbps GUARENTEED DATA RATE

■ 20µs TYPICAL TIME TO EXIT SHUTDOWN

■ 6V/µs G UARANTEED SLEW RATE

■ MEET EIA/TIA-232 SPECIFICATIONSDOWN

TO 3V

■ PACKAGES: SO-18 AND SSOP-20

DESCRIPTION

The S T3384E is a 3V powered EIA/TIA-232 and
V.28/V.24 communications interface with low
power requirements, high data-rate capabilities
and enhanced electrostatic discharge (ESD)
protection. All transmitter outputs and receiver
inputs are protected to ±15kV using the Human
Body Model. The ST3384E has a proprietary low
dropout transmitter output stage enabling true
RS-232 performance from 3 to 5.5V supplies with
a dual charge pump. The charge pump require
only four small 0.1µF external capacitors for
operation from a 3.3V supply.

ST3384E

SO-18 SSOP20

The device is guaranteed to run at data rates of
250Kbps while maintaining RS-232 output levels.
The ST3384E has two receive rs and two drivers. It
features a 1µA shutdown mode that reduces
power consumption and ext ends battery life in
portable systems.
Typical applications are in Notebook,
Sub-notebook, and Palmtop Computers, Battery
Powered Equipment, Hand-Held Equipment,
Peripherals, Printers.

ORDERING CODES

Type

ST3384ECD 0 to 70 °C SO-18 (Tube) 50 parts per tube / 20 tube per box

ST3384EBD -40 to 85 °C SO-18 (Tube) 50 parts per tube / 20 tube per box
ST3384ECDR 0 to 70 °C SO-18 (Tape & Reel) 1000 parts per reel
ST3384EBDR -40 to 85 °C SO-18 (Tape & Reel) 1000 parts per reel
ST3384ECPR 0 to 70 °C SSOP20 (Tape & Reel) 1350 parts per reel
ST3384EBPR -40 to 85 °C SSOP20 (Tape & Reel) 1350 parts per reel

Temperature

Range

Package Comments

1/11July 2003

ST3384E

PIN CONFIGURATION

PIN DESCRIPTION

SO-18 SSOP20

PlN N°

(SO-18)

PlN N°

(SSOP20)

SYMBOL NAME AND FUNCTION

1 1, 10, 11 N.C. Not Connected
22

+

C

1

Positive Terminal for the first Charge Pump
Capacitor

3 3 V+ 5.5V Generated By The Charge Pump
44

55

66

-

C

1

+

C

2

-

C

2

Negative Terminal for the first Charge Pump
Capacitor

Positive Terminal for the second Charge Pump
Capacitor

Negative Terminal for the second Charge Pump

Capacitor
7 7 V- -5.5V Generated By The Charge Pump
88

99

10 12
11 13
12 14
13 15
14 16
15 17

T2

R2

R1

T1

R2

T2
T1

R1

OUT

IN

OUT

IN
IN

OUT

IN

OUT

Second Transmitter Output Voltage

Second Receiver Input Voltage

Second Receiver Output Voltage

Second Transmitter Input Voltage

First Transmitter Input Voltage

First Receiver Output Voltage

First Receiver Input Voltage

First Transmitter Output Voltage

16 18 GND Ground
17 19

V

CC

18 20 SHDN

3V to 5.5V Supply Voltage. Connect a 0.1µF

capacitor to GND

Active Low Shutdown Control Input. Drive Low To

Shut-down Transmitters, receiver and Charge

Pump

2/11

ST3384E

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

V+

V- Inverted Voltage Terminal (V- to GND) (Note 1) 0.3 to -7 V

V+ +|V-| (Note 1) 13 V

T

SHDN

R

T

OUT

R

OUT

t

SHORT

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied. V+ and V- can have a maximum magnitude of +7V, but their absolute addition cannot exceed 13 V.
Note 1: V+ and V- can have maximum magnitude of 7V, but their absolute difference cannot exceed 13V.

SHUTDOWN TRUTH TABLE

Supply Voltage (VCCto GND)

CC

Doubled Voltage Terminal (V+ to GND) (Note 1) (V

Transmitter Input Voltage

IN

-0.3 to 6 V

-0.3)to7

CC

-0.3 to 6 V
Shutdown Input Voltage (SHDN to GND) -0.3 to 6 V
Receiver Input Voltage (RINto GND)

IN

Transmitter Output Voltage (T

OUT

to GND)

± 25 V

± 13.2 V

Receiver Output Voltage -0.3 to (VCC+ 0.3)
Transmitter Output Short to GND Time

Continuous

V

V

SHDN

T-OUT R-OUT

L High Z High Z

H Active Active

ELECTRICAL CHARACTERISTICS

(C
±10% -40°C < T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

=0.1µF, VCC= 3V to 5.5V, tested at 3.3V ±10% C1= 0.047µF, C2-C4=0.33µFtestedat5V

1-C4

< 85°C unl es s otherwise noted. Typical values are referred to TA= 25°C)

A

I

VCCPower Supply Current SHDN = NO LOAD 0.3 1 mA

CC

I

SHDN

SHUTDOWN Supply
Current

ESD R-IN, T-OUT Electrostatic

SHDN =GND 1 10 µA

Human Body Model ±15 kV

Discharge Immunity

LOGIC INPUT ELECTRICAL CHARACTERISTICS

(C
±10% -40°C < T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

=0.1µF, VCC= 3V to 5.5V, tested at 3.3V ±10% C1= 0.047µF, C2-C4=0.33µFtestedat5V

1-C4

< 85°C unl es s otherwise noted. Typical values are referred to TA= 25°C)

A

Input Logic Threshold Low T-IN, SHDN 0.8 V

V

IL

Input Logic Threshold High T-IN, SHDN VCC= 3.3V 2 V

V

IH

T-IN, SHDN

V

Transmitter Input

HYS

Hysteresis
Input Leakage Current T-IN, SHDN ± 0.01 ± 1 µA

I

IL

VCC= 5.0V 2.4

0.5 V

3/11

ST3384E

TRANSMITTER ELECTRICAL CHARACTERISTICS

(C
±10% -40°C < T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

R

RECEIVER DC TARGET ELECTRICAL CHARACT ERISTICS

(C
±10% -40°C < T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

=0.1µF, VCC= 3V to 5.5V, tested at 3.3V ±10% C1= 0.047µF, C2-C4=0.33µFtestedat5V

1-C4

< 85°C unl es s otherwise noted. Typical values are referred to TA= 25°C)

A

TOUT

TOUT

I

TSC

I

TOL

Output Voltage Swing All Transmitter outputs loaded with 3 KΩ

to GND

Transmitter Output
Resistance

VCC=V+=V-=0V
Transmitter output = ± 2V

Output Short Circuit Current ± 50 mA
Output Leakage Current VCC= 0V or 3V to 5.5V V

OUT

= ± 12V

± 5 ± 5.4 V

300 10M Ω

Transmitters Disabled

=0.1µF, VCC= 3V to 5.5V, tested at 3.3V ±10% C1= 0.047µF, C2-C4=0.33µFtestedat5V

1-C4

I

OL

V

RIN

V

RIL

V

RITH

V

RIH

R

RIN

V

ROL

V

ROH

Output Leakage Current R-OUT, Receiver Disabled ± 0.05 ± 10 µA
Input Voltage Operating

Range
Input Threshold Low TA= 25°C VCC= 3.3V 0.6 1.2 V

Input Threshold High TA= 25°C VCC= 3.3V 1.5 2.4 V

Input Hysteresis 0.5 V
Input Resistance TA= 25°C 3 5 7 KΩ
TTL/CMOS Output Voltage

Low
TTL/CMOS Output Voltage

High

< 85°C unl es s otherwise noted. Typical values are referred to TA= 25°C)

A

-25 ± 25 V

= 25°C VCC= 5.5V 0.8 1.5

T

A

= 25°C VCC= 5.5V 1.8 2.4

T

A

I

= 2 mA 0.4 V

OUT

I

=-1mA VCC-0.6 VCC-0.1 V

OUT

± 25 µA

TIMING TARGET ELECTRICAL CHARACTER ISTICS

(C
±10% -40°C < T

Symbol Parameter Test Conditions Min. Typ. Max. Unit

-t
|t

-t

(Note 1) Transmitter Skew is measured at the transmitter zero cross points.

4/11

=0.1µF, VCC= 3V to 5.5V, tested at 3.3V ±10% C1= 0.047µF, C2-C4=0.33µFtestedat5V

1-C4

< 85°C unl es s otherwise noted. Typical values are referred to TA= 25°C)

A

Maximum Data Rate RL=3KΩ CL2= 1000pF

D

R

250 Kbps

one transmitter switching

t

PHLR

t

PLHR

|t

PHLT
PLHT

PHLR
PLHR

t

EX

S

Receiver Propagation Delay R

Transmitter Propagation
Delay Difference (Note 1)

|

Receiver Propagation Delay
Difference

|

Time to Exit Shutdown V
Transition Slew Rate TA= 25°C RL=3KΩto 7KΩ VCC= 3.3V

RT

XIN

to R

XOUT

CL= 150pF 0.15 µs

(Note 1) 150 ns

100 ns

OUT

≥ 3V, R

at V+ = 3 KΩ 20 µs

LOAD

Measured from +3V to -3V or -3V to +3V

= 150pF to 1000pF

C

L

C

= 150pF to 2500pF

L

6
4

8
8

30
30

V/µs
V/µs