MC145406 Datasheet, PDF (1/5 Pages) NXP Semiconductors – EIA-232-D/V.28 driver/receiver

Philips Semiconductors Linear Products
EIA-232-D/V.28 driver/receiver
Product specification
MC145406
DESCRIPTION
The MC145406 is a silicon-gate CMOS IC that combines 3 drivers
and 3 receivers to fulfill the electrical specifications of standards
EIA-232-D and CCITT V.28. The drivers feature true TTL input
compatibility, slew-rate limited output, 300Ω power-off source
impedance, and output typically switching to within 25% of the
supply rails. The receivers can handle up to +25V while presenting
3 to 7kΩ impedance. Hysteresis in the receiver aids reception of
noisy signals. By combining both drivers and receivers in a single
CMOS chip, the MC145406 provides efficient, low-power solutions
for EIA-232-D and V.28 applications.
APPLICATIONS
• Modem interface
• Voice/data telephone interface
• Lap-top computers
• UART interface
FEATURES
• Drivers
• +5 to +12V supply range
• 300Ω power-off source impedance
• Output current limiting
• TTL compatible
ORDERING INFORMATION
DESCRIPTION
16-Pin Plastic Dual In-Line (DIP) Package
16-Pin Small Outline Large (SOL) Package
PIN CONFIGURATION
D and N Packages
V_DD 1
RX₁ ²
TX₁ 3
RX₂ 4
TX₂ 5
RX₃ 6
TX₃ 7
V_SS 8
R
D
R
D
R
D
16 V_CC
15 _DO1
14 DI1
13 DO2
12 DI2
11 DO3
10 _DI3
9 GND
NOTE:
D = Driver
R = Receiver
• Maximum slew rate = 30V/µs
• Receivers
• +25V input voltage range over the full supply range
• 3 to 7kΩ input impedance
• Hysteresis on input switchpoint
• General
• Very low supply currents for long battery life
• Operation is independent of power supply sequencing
TEMPERATURE RANGE
0 to +70°C
0 to +70°C
ORDER CODE
MC145406N
MC145406D
DWG #
0406C
0171B
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V_CC
V_DD
V_SS
V_IR
P_D
T_A
T_STG
θ_JA
PARAMETER
Supply voltage
Supply voltage
Supply voltage
Input voltage range
RX_1-3 inputs
DI_1-3 inputs
DC current per pin
Power dissipation (package)
Operating temperature range
Storage temperature range
Thermal impedance N package
D package
RATING
-0.5 to +6.0
-0.5 to +13.5
+0.5 to -13.5
(V_SS - 15) to (V_DD + 15)
-0.5 to (V_CC + 0.5)
+100
1.0
0 to +70
-65 to +150
80
105
UNITS
V
V
V
V
mA
W
°C
°C
°C/W
NOTE: This device contains protection circuitry to protect the inputs against damage due to high static voltages or electric fields; however, it is
advised that normal precautions be taken to avoid application of any voltage higher than maximum rated voltages to this high impedance circuit.
For proper operation, it is recommended that the voltages at the DI and DO pins be constrained to the range GND < V_DI < V_DD and GND < V_DO
< V_CC. Also, the voltage at the RX pin should be constrained to +25V, and TX should be constrained to V_SS < V_TX1-3 < V_DD. Unused inputs
must always be tied to an appropriate logic voltage level (e.g., GND or V_CC for DI, and V_SS or V_DD for RX).
August 31, 1994
467
853-1430 13721