Zywyn Corporation
ZT202E/232E/310E/312E
ZT202E, ZT232E
ZT310E, ZT312E
Z
ywyn
Low Power 5V 250kbps RS232 Transceivers
General Description
Features
The ZT232E series devices are +5V powered EIA/TIA-232 and
CCITT V.28/V.24 communication interfaces with low power re-
quirements. These transceivers consist of two line drivers, two
line receivers and the proprietary switch-capacitor regulated
voltage converters. The ZT310E and ZT312E feature a low power
shutdown mode which draws as little current as 1μA typical with
receiveroutputstri-statedandinwake-up. Thesedevicesoperatefrom
a single +5V power supply at the guaranteed data rate of 250k
bits/sec with enhanced electrostatic discharge (ESD) protection
in all RS232 I/O pins exceeding 15kV ꢀHB.
• Beets EIA/TIA-232F and CCITT V.28/V.24 specifications
for V at +5V 10ꢁ
CC
• Low Quiescent Current –3mA typ., 5mA max.
• Low Shutdown Current (where applicable) - 1μA typi-
cal, 5μA max.
• Guaranteed Standard Data Rate 250kbps
• Proprietary Switch-Capacitor Regulated Voltage Con-
verters (patent pending)
• Use Small 0.1μF Capacitors
• Wake Up Feature (where applicable) in Shutdown
Bode
Applications
• Single Power Supply Applications
• Industrial and Embedded PCs
• Set Top Hoxes
• Tri-State Receiver Outputs
• Latch-up Free
• ESD Protection for RS-232 I/O's
15kV ꢀuman Hody Bodel (ꢀHB)
• Drop-in Replacements for BAX202E, BAX232E, SP202E,
SP232E, SP310E, SP312E, ST202E, ST232E, ꢀIN202E,
ꢀIN232E, ADB202E,ADB232L
• Terminal Adapters
• POS terminals
• Peripherals Interface
• Routers and ꢀUHs
• ꢀigh Data Rate at 1000kbps Available on ZT232F Se-
ries
16
15 GND
C1+
V+
1
2
3
4
5
6
7
8
Vcc
ZYWYN
ZT232E
14
13
12
11
10
9
T OUT
1
C1-
C2+
C2-
V-
R
R
1
IN
1
OUT
T
T
R
1
IN
IN
OUT
T
2
OUT
2
R
2
IN
2
16-pin PDIP/nSOIC/wSOIC/TSSOP
Product Selection Guide And Cross Reference
Part
Number
# 0f
# of
# of Rx
active in
SD
# of
0.1μF
caps
Shut
Down
Wake
Up
TTL
Tri-
State
Data
Rate
(kbps)
ESD
HBM on
RS232 I/O
RS232 RS232
Tx
Pin-to-Pin Cross Reference
AN003
Rx
ZT202E
ZT232E
2
2
2
2
0
0
4
4
No
No
No
No
No
No
250
250
± 15kV
± 15kV
Analog Devices, Intersil,
Maxim, EXAR, STmicro, TI
ZT310E
ZT312E
2
2
2
2
0
2
4
4
Yes
Yes
No
Yes
Yes
Yes
250
250
± 15kV
± 15kV
EXAR
Specifications subject to change without notice
Z
ywyn
1
June 2010
Zywyn Corporation • Tel (408) 733-3225 • Fax (408) 733-3206 • Email sales@zywyn.com • www.zywyn.com
rev. 04
ASIX [ ASIX ELECTRONICS CORPORATION ]
