AD7306ANZ Analog Devices Inc, AD7306ANZ Datasheet - Page 8

• Manufacturer Part Number: AD7306ANZ
• Description: RS 232/422 INTERFACE DEV
• Manufacturer: Analog Devices Inc
• Type: Transceiverr

Specifications of AD7306ANZ

• Number Of Drivers/receivers: 3/3
• Protocol: RS232
• Voltage - Supply: 4.75 V ~ 5.25 V
• Mounting Type: Through Hole
• Package / Case: 24-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Single-Ended Data Transmission
Single-ended interfaces are used for low speed, short distance
communications such as from a computer terminal to a printer.
A single line is used to carry the signal. Various standards have
been developed to standardize the communication link, the most
popular of these being the RS-232. The RS-232 standard was
introduced in 1962 by the EIA and has been widely used
throughout the industry. The standard has been revised several
times, and the current revision is known as EIA-232E. The
RS-232 standard is suitable for single-ended data transmission
at relatively slow data rates over short distances. A typical
RS-232 interface is shown in Figure 14.
AD7306
0.0118 (0.30)
0.0040 (0.10)
DATA
IN
Figure 14. Single-Ended RS-232 Interface
24
1
PIN 1
0.0500
(1.27)
BSC
TX
0.6141 (15.60)
0.5985 (15.20)
Specification
Transmission Type
Maximum Data Rate
Maximum Cable Length
Minimum Driver Output Voltage
Slew Rate
Receiver Input Resistance
Receiver Input Sensitivity
Receiver Input Voltage Range
No. of Drivers per Line
No. of Receivers per Line
24-Lead SOIC (R-24)
0.0192 (0.49)
0.0138 (0.35)
RS-232 CHANNEL
0.1043 (2.65)
0.0926 (2.35)
12
13
SEATING
PLANE
Table I. Comparison of RS-232 and RS-422 Interface Standards
0.0125 (0.32)
0.0091 (0.23)
RX
8
0
0.0291 (0.74)
0.0098 (0.25)
0.0500 (1.27)
0.0157 (0.40)
Dimensions shown in inches and (mm).
OUTLINE DIMENSIONS
DATA
OUT
x 45
EIA-232E
Single-Ended
20 kB/s
Load Dependent
30 V/ s max
3 k to 7 k
1
1
–8–
5 V
3 V
15 V
Differential Data Transmission
When transmitting at high data rates, over long distances and
through noisy environments, single-ended data transmission is
often inadequate. In this type of application, differential data
transmission offers superior performance. Differential transmis-
sion uses two signal lines to transmit data. It rejects ground
shifts and is insensitive to noise signals which appear as com-
mon mode voltages on the transmission lines. To accommodate
faster data communication, the differential RS-422 standard was
developed. Therefore, it can be used to reliably transmit data at
higher speeds and over longer distances than single-ended trans-
mission. A typical RS-422 interface is shown in Figure 15.
SEATING
PLANE
0.016 (0.41)
NOTES
1.
2.
DATA
0.02 (0.5)
LEAD NO. 1 IDENTIFIED BY DOT OR NOTCH.
PLASTIC LEADS WILL BE EITHER SOLDER DIPPED OR TIN LEAD PLATED
IN ACCORDANCE WITH MIL-M-385 10 REQUIREMENTS.
IN
Figure 15. Differential RS-422 Interface
24-Lead Pin Plastic DIP (N-24)
TX
0.11 (2.79)
0.09 (2.28)
1.228 (31.19)
1.226 (31.14)
RS-422 CHANNEL
RS-422
4 k min
1
Differential
10 MB/s
4000 ft.
10
1.5 V
200 mV
7 V
0.05 (1.27)
0.07(1.78)
0.130 (3.30)
0.128 (3.25)
0.260
(6.61
RX
0.001
0.03)
0 - 15
0.011 (0.28)
0.009 (0.23)
0.32 (8.128)
0.30 (7.62)
DATA
OUT
REV. B