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ML145407 데이터시트 PDF




LANSDALE Semiconductor에서 제조한 전자 부품 ML145407은 전자 산업 및 응용 분야에서
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부품번호 ML145407 기능
기능 5 Volt Only Driver/Receiver
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ML145407 데이터시트, 핀배열, 회로
www.DataSheet4U.com
ML145407
5 Volt Only Driver/Receiver
RS232 EIA–232–E and CCITT V.28
Legacy Device: Motorola MC145407
The ML145407 is a silicon–gate CMOS IC that combines three
drivers and three receivers to fulfill the electrical specifications of
RS232 EIA–232–E and CCITT V.28 while operating from a single + 5
V power supply. A voltage doubler and inverter convert the + 5V to ±
10 V. This is accomplished through an on–board 20 kHz oscillator
and four inexpensive external electrolytic capacitors. The three drivers
and three receivers of the ML145407 are virtually identical to those of
the ML145406. Therefore, for applications requiring more than three
drivers and/or three receivers, an ML145406 can be powered from an
ML145407, since the ML145407 charge pumps have been designed to
guarantee ± 5 V at the output of up to six drivers. Thus, the
ML145407 provides a high–performance, low–power, stand–alone
solution or, with the ML145406, a + 5 V only, high–performance
two–chip solution.
This device offers the following performance features:
• Operating Temperature Range = TA –40° to +85°C
Drivers
• ± 7.5 V Output Swing
• 300Power–Off Impedance
• Output Current Limiting
• TTL and CMOS Compatible Inputs
• Slew Rate Range Limited from 4 V/µs to 30 V/µs
Receivers
• + 25 V Input Range
• 3 to 7 kInput Impedance
• 0.8 V Hysteresis for Enhanced Noise Immunity
Charge Pumps
• + 5 V to ± 10 V Dual Charge Pump Architecture
• Supply Outputs Capable of Driving Three On–Chip Drivers and
Three Drivers on the ML145406 Simultaneously
• Requires Four Inexpensive Electrolytic Capacitors
• On–Chip 20 kHz Oscillator
20
1
P DIP 20 = RP
PLASTIC DIP
CASE 738
20
1
SOG 20 = -6P
SOG PACKAGE
CASE 751D
CROSS REFERENCE/ORDERING INFORMATION
PACKAGE
MOTOROLA
LANSDALE
P DIP 20
SOG 20
MC145407P ML145407RP
MC145407DW ML145407-6P
Note: Lansdale lead free (Pb) product, as it
becomes available, will be identified by a part
number prefix change from ML to MLE.
PIN ASSIGNMENT
C2+ 1
20 C1+
2
GND
3
C2–
4
VSS
Rx1 5 R
19
VCC
18
C1–
17
VDD
16
DO1
6
Tx1
D 15 DI1
Rx2 7 R
14
DO2
Tx2 8
D 13 DI2
Rx3 9 R
12 DO3
10
Tx3
D 11 DI3
D = DRIVER
R = RECEIVER
Page 1 of 8
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Issue A




ML145407 pdf, 반도체, 판매, 대치품
ML145407
www.DataSheet4U.com
LANSDALE Semiconductor, Inc.
DRIVER ELECTRICAL SPECIFICATIONS
(Voltage polarities referenced to GND = 0 V: VCC = +5 V ± 10%; C1, C2, C3, C4 = 10 µF; TA = –40 to +85°C)
Characteristic
Symbol
Min
Typ
Max Unit
Digital Input Voltage
Logic 0
Logic 1
Input Current
GND VDI1 – DI3 VCC
DI1 – DI3
DI1 – DI3
VIL
VIH
Iin
2.0
V
— 0.8
——
± 1.0
µA
Output High Voltage
VDI1 – DI3 = Logic 0, RL = 3.0 k
Tx1 – Tx3
Tx1 – Tx6*
VOH
6
5
7.5 —
6.5 —
V
Output Low Voltage
VDI1 – DI3 = Logic 1, RL = 3.0 k
Tx1 – Tx3
Tx1 – Tx6*
VOL
– 6 – 7.5
– 5 – 6.5
V
Off Source Impedance (Figure 1)
Output Short–Circuit Current
VCC = + 5.5 V
Tx1 – Tx3
Tx1 – Tx3
Tx1 – Tx3 shorted to GND**
Tx1 – Tx3 shorted to ± 15 V***
Zoff
ISC
300
——
mA
± 60
± 100
* Specifications for an ML145407 powering an ML145406 with three additional drivers/receivers.
** Specification is for one Tx output pin to be shorted at a time. Should all three driver outputs be shorted simultaneously, device power dissipation
limits could be exceeded.
*** This condition could exceed package limitations.
SWITCHING CHARACTERISTICS (VCC = + 5 V ± 10%; C1, C2, C3, C4 = 10 µF; TA = – 40 to + 85°C; See Figures 2 and 3)
Characteristic
Symbol
Min
Typ
Max
Drivers
Propagation Delay Time
Low–to–High
RL = 3 k, CL = 50 pF or 2500 pF
Tx1 – Tx3 tPLH
0.5
1
High–to–Low
RL = 3 k, CL = 50 pF or 2500 pF
tPHL
0.5
1
Output Slew Rate
Minimum Load: RL = 7 k, CL = 0 pF
Tx1 – Tx3
SR
— 9.0 ± 30
Maximum Load: RL = 3 k, CL = 2500 pF
Receivers (CL = 50 pF)
Propagation Delay Time
Low–to–High
DO1 – DO3
tPLH
4.0
1
High–to–Low
Output Rise Time
DO1 – DO3
tPHL
tr
—1
250 400
Output Fall Time
DO1 – DO3
tf
— 40 100
Unit
µs
V/µs
µs
ns
ns
Page 4 of 8
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Issue A

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ML145407 전자부품, 판매, 대치품
ML145407
www.DataSheet4U.com
LANSDALE Semiconductor, Inc.
+5V
1 VDD
VCC 16
2
Rx1
15
DO1
3 Tx1
4 Rx2
5 Tx2
ML145406
14
DI1
13
DO2
12
DI2
6 Rx3
11
DO3
7 Tx3
10
DI3
8 VSS
GND 9
10 µF
10 µF
1
C2+
C1+ 20
2 GND
3 C2–
VCC 19
18
C1–
4 VSS
5 Rx1
6 Tx1
VDD 17
ML145407 DO1 16
DI1 15
7 Rx2
14
DO2
8 Tx2
9 Rx3
13
DI2
DO3 12
10 Tx3
DI3 11
10 µF
10 µF
Figure 5. ML145406/ML145407 5 V Only Solution for up to Six EIA–232–E Drivers and Receivers
+5V
+ 10 V
C2 C2+
GND
C2–
VSS
C4
1
2
3
4
5
6
7
8
9
10
20 C1+
19 VCC
18 C1–
17 VDD
16
15
14
13
12
11
0.1 µF
0.1 µF
TO
CONNECTOR
Figure 6. Two Supply Configuration (ML145407 Generates VSS Only)
+5V
MMBZ15VDLT × 6
C2 C2+ 1
GND 2
C2– 3
VSS 4
C4 Rx1 5
Tx1 6
Rx2 7
Tx2 8
Rx3 9
Tx3 10
20 C1+
19 VCC
18 C1–
17 VDD
16 DO1
15 DI1
14 DO2
13 DI2
12 DO3
11 DI3
C1
0.1 µF
C3
0.1 µF
Page 7 of 8
Figure 7. ESD Protection Scheme
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