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MC14C89B, AB Quad Low Power Line Receivers
The MC14C89B and MC14C89AB are low monolithic quad line receivers using bipolar technology, which conform to the EIA-232-E, EIA-562 and CCITT V.28 Recommendations. The outputs feature LSTTL and CMOS compatibility for easy interface to +5.0 V digital systems. Internal time-domain filtering eliminates the need for external filter capacitors in most cases. The MC14C89B has an input hysteresis of 0.35 V, while the MC14C89AB hysteresis is 0.95 V. The response control pins allow adjustment of the threshold level if desired. Additionally, an external capacitor may be added for additional noise filtering. The MC14C89B and MC14C89AB are available in both a 14 pin dual-in-line plastic DIP and SOIC package. Features: * Low Power Consumption
QUAD LOW POWER LINE RECEIVERS
SEMICONDUCTOR TECHNICAL DATA
* * * * * * * * *
Meets EIA-232-E, EIA-562, and CCITT V.28 Recommendations TTL/CMOS Compatible Outputs Standard Power Supply: + 5.0 V 10% Pin Equivalent to MC1489, MC1489A, TI's SN75C189/A, SN75189/A and National Semiconductor's DS14C89/A External Filtering Not Required in Most Cases Threshold Level Externally Adjustable Hysteresis: 0.35 V for MC14C89B, 0.95 V for MC14C89AB Available in Plastic DIP, and Surface Mount Packaging Operating Ambient Temperature: -40 to +85C
Input A Response Control A Output A Input B
P SUFFIX PLASTIC PACKAGE CASE 646
D SUFFIX PLASTIC PACKAGE CASE 751A (SO-14)
PIN CONNECTIONS
1 2 3 4 5 6 7 (Top View) 14 VCC 13 Input D 12 Response Control D 11 Output D 10 Input C 9 8 Response Control C Output C
Representative Block Diagram (Each Receiver)
VCC
Response Control B Output B Ground
Input
Response Control
Output
ORDERING INFORMATION
Device MC14C89BP MC14C89ABP MC14C89ABD
(c) Motorola, Inc. 1996
Operating Temperature Range
Package Plastic DIP
TA = - 40 to +85C
Plastic DIP SO-14
Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1
MC14C89B, AB
MAXIMUM RATINGS
Rating Power Supply Voltage VCC(max) VCC(min) Input Voltage Output Load Current Junction Temperature Symbol VCC Vin IO TJ Value + 7.0 - 0.5 30 Self-Limiting -65, +150 Vdc - C Unit Vdc
Devices should not be operated at these limits. The "Recommended Operating Conditions" table provides for actual device operation.
RECOMMENDED OPERATING CONDITIONS
Characteristic Power Supply Voltage Input Voltage Output Current Capability Operating Ambient Temperature
All limits are not necessarily functional concurrently.
Symbol VCC Vin IO TA
Min 4.5 -25 -7.5 -40
Typ 5.0 - - -
Max 5.5 25 6.0 85
Unit Vdc Vdc mA C
ELECTRICAL CHARACTERISTICS (-40C
Characteristic Supply Current (Iout = 0) ICC @ +4.5 V VCC +5.5 V
p TA p +85C, unless otherwise noted.)*
Symbol ICC - VOH 3.5 3.5 2.5 2.5 VOL - - IOS -35 - VIL VIH VIL VIH 0.75 1.6 0.75 1.0 3.0 -13.9 +10.3 0.95 1.90 0.95 1.3 5.5 - 35 1.25 2.25 1.25 1.5 7.0 Vdc 0.1 0.1 0.4 0.4 mA 3.8 4.8 3.7 4.7 - - - - 330 700 Vdc Min Typ Max Unit A
p
p
Output Voltage - High, Vin 0.4 V (See Figures 2 and 3) Iout = -20 A VCC = 4.5 V VCC = 5.5 V Iout = -3.2 mA VCC = 4.5 V VCC = 5.5 V Output Voltage - Low, Vin 2.4 V Iout = 3.2 mA VCC = 4.5 V VCC = 5.5 V
p
q
Output Short Circuit Current** (VCC = 5.5 V, see Figure 4) Normally High Output shorted to ground Normally Low Output shorted to VCC Input Threshold Voltage (VCC = 5.0 V) (MC14C89AB, see Figure 5) Low Level High Level (MC14C89B, see Figure 6) Low Level High Level Input Impedance (+4.5 V
t VCC t +5.5 V -25 V t Vin t +25 V)
k
* * Typicals reflect performance @ TA = 25C **Only one output shorted at a time, for not more than 1.0 seconds.
TIMING CHARACTERISTICS (TA = +25C, unless otherwise noted.)
Characteristic Output Transition Time (10% to 90%) 4.5 V VCC 5.5 V Symbol tT - 0.08 0.30 Min Typ Max Unit s
p p
p p
Propagation Delay Time 4.5 V VCC 5.5 V Output Low-to-High Output High-to-Low Input Noise Rejection (see Figure 9)
tPLH tPHL
- - 1.0
3.35 2.55 1.5
6.0 6.0 -
s s
2
MOTOROLA ANALOG IC DEVICE DATA
MC14C89B, AB
Figure 1. Timing Diagram
3.0 V S.G. 0V VCC tPHL 50 pF S.G. RC (Open)
NOTES: S.G. set to: f = 20 kHz; Duty Cycle = 50%; tr , tf 5.0 ns
1.5 V
tPLH 90% VOH
Vout
p
Vout
50%
50%
10% tT tT VOL
STANDARDS COMPLIANCE The MC14C89B and MC14C89AB are designed to comply with EIA-232-E (formerly RS-232), the newer EIA-562 (which is a higher speed version of the EIA-232), and CCITT V.28 Recommendations. EIA-562 was written around modern integrated circuit technology, whereas EIA-232 retains many of the specifications written around the
Parameter Max Data Rate Max Cable Length Transition Region MARK (one, off) SPACE (zero, on) Fail Safe Open Circuit Input Voltage Slew Rate (at the driver) Loaded Output Voltage (at the driver) 20 kBaud 50 feet -3.0 V to +3.0 V More negative than -3.0 V More positive than +3.0 V Output = Binary 1
electro-mechanical circuitry in use at the time of its creation. Yet the user will find enough similarities to allow a certain amount of compatibility among equipment built to the two standards. Following is a summary of the key specifications relating to the systems and the receivers.
EIA-232-E
EIA-562 38.4 kBaud Asynchronous 64 kBaud Synchronous Based on cable capacitance/data rate -3.0 V to +3.0 V More negative than -3.3 V More positive than +3.3 V Output = Binary 1
t2.0V p30 V/s anywhere on the waveform
5.0 V VO p 15 V for loads between 3.0 k and 7.0 k
p
p30 V/s anywhere on the waveform, q4.0 V/s between +3.0 V and -3.0 V VO q 3.7 V for a load of 3.0 k
Not Specified
Figure 2. Typical Output versus Supply Voltage
5.0 VOH(Iout = -20 A) VO , OUTPUT VOLTAGE (V) 4.0 VOH(Iout = -3.2 mA) MC14C89AB MC14C89B TA = 25C
Figure 3. Typical Output Voltage versus Temperature
5.0 4.0 VOH(Iout = -20 A) VOH(Iout = -3.2 mA) MC14C89AB MC14C89B VCC = 5 V
3.0 2.0
1.0 0 4.5 VOL(Iout = 3.2 mA) 4.7 4.9 5.1 VCC, SUPPLY VOLTAGE (V) 5.3 5.5
VO , OUTPUT VOLTAGE (V)
3.0 2.0
1.0 VOL(Iout = 3.2 mA) 0 -40 25 -7.5 57.5 TA, AMBIENT TEMPERATURE (C) 85
MOTOROLA ANALOG IC DEVICE DATA
3
MC14C89B, AB
Figure 4. Typical Short Circuit Current versus Temperature
15 10 Normally Low Output Shorted to VCC 5.0 0 -5.0 -10 -15 -40 MC14C89AB MC14C89B VCC = 5.5 V INPUT THRESHOLD VOLTAGE (Vdc) SHORT CIRCUIT CURRENT (mA) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 -40 VIL 57.5 25 -7.5 TA, AMBIENT TEMPERATURE (C) 85 VIH MC14C89AB 4.5 V VCC
Figure 5. Typical Threshold Voltage versus Temperature
t
t 5.5 V
Normally High Output Shorted to Ground -7.5 25 57.5 TA, AMBIENT TEMPERATURE (C) 85
Figure 6. Typical Threshold Voltage versus Temperature
2.0 INPUT THRESHOLD VOLTAGE (Vdc) 1.8 1.6 1.4 1.2 1.0 VIL 0.8 -40 -7.5 25 57.5 85 5.0 INPUT THRESHOLD VOLTAGE (Vdc) MC14C89B 4.5 V VCC
Figure 7. Typical Effect of Response Control Pin Bias
RC RRC VIL @ Vbat = -10 V + - Vbat
t
t 5.5 V
4.0 3.0
VIH
2.0 VIL @ Vbat = -3.0 V 1.0 Nominal VIL 0 0 10 k 20 k 30 k BIAS RESISTANCE (RRC) 4.5 V
t VCC t 5.5 V
40 k 50 k
TA, AMBIENT TEMPERATURE (C)
Figure 8. Typical Noise Pulse Rejection
5.0 4.5 4.0 3.5 3.0 Noise Pulse Rejection 2.5 2.0 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 PW, INPUT PULSE WIDTH (s) MC14C89AB MC14C89B Pulse Rate = 300 kHz RC Pin Open
4
Ein , PULSE AMPLITUDE (V)
MOTOROLA ANALOG IC DEVICE DATA
MC14C89B, AB
APPLICATIONS INFORMATION
Description The MC14C89AB and MC14C89B are designed to be direct replacements for the MC1489A and MC1489. Both devices meet all EIA-232 specifications and also the faster EIA-562 and CCITT V.28 specifications. Noise pulse rejection circuitry eliminates the need for most response control filter capacitors but does not exclude the possibility as filtering is still possible at the Response Control (RC) pins. Also, the Response Control pins allow for a user defined selection of the threshold voltages. The MC14C89AB and MC14C89B are manufactured with a bipolar technology using low power techniques and consume at most 700 mA, plus load currents with a +5.0 V supply. Outputs The output low or high voltage depends on the state of the inputs, the load current, the bias of the Response Control pins, and the supply voltage. Table 1 applies to each receiver, regardless of how many other receivers within the package are supplying load current. Table 1. Function Table Receivers
Input* H L Output* L H
MC14C89B or 0.95 V for the MC14C89AB). Figure 7 plots equation (1) for two values of Vbat and a range of RRC. If an RC pin is to be used for low pass filtering, the capacitor chosen can be calculated by the equation, C RC
]
1 2.02 kW 2p f
*3dB
(2)
where f-3 dB represents the desired -3 dB role-off frequency of the low pass filter. Figure 9. Application to Adjust Thresholds
Input Pin Response Control Pin RRC
+ -
Vbat
*The asterisk denotes A, B, C, or D.
Another feature of the MC14C89AB and MC14C89B is input noise rejection. The inputs have the ability to ignore pulses which exceed the VIH and VIL thresholds but are less than 1.0 ms in duration. As the duration of the pulse exceeds 1.0 ms, the noise pulse may still be ignored depending on its amplitude. Figure 8 is a graph showing typical input noise rejection as a function of pulse amplitude and pulse duration. Figure 8 reflects data taken for an input with an unconnected RC pin and applied to the MC14C89AB and MC14C89B. Operating Temperature Range The ambient operating temperature range is listed as -40C to +85C, and the devices are designed to meet the EIA-232-E, EIA-562 and CCITT V.28 specifications over this temperature range. The timing characteristics are guaranteed to meet the specifications at +25C. The maximum ambient operating temperature is listed as +85C. However, a lower ambient may be required depending on system use (i.e., specifically how many receivers within a package are used), and at what current levels they are operating. The maximum power which may be dissipated within the package is determined by: PD
Receiver Inputs and Response Control The receiver inputs determine the state of the outputs in accordance with Table 1. The nominal VIL and VIH thresholds are 0.95 V and 1.90 V respectively for the MC14C89AB. For the MC14C89B, the nominal VIL and VIH thresholds are 0.95 and 1.30, respectively. The inputs are able to withstand 30 V referenced to ground. Should the input voltage exceed ground by more than 30 V, excessive currents will flow at the input pin. Open input pins will generate a logic high output, but good design practices dictate that inputs should never be left open. The Response Control (RC) pins are coupled to the inputs through a resistor string. The RC pins provide for adjustment of the threshold voltages of the IC while preserving the amount of hysteresis. Figure 10 shows a typical application to adjust the threshold voltages. The RC pins also provide access to an internal resistor string which permits low pass filtering of the input signal within the IC. Like the input pins, the RC pins should not be taken above or below ground by more than 30 V or excessive currents will flow at these pins. The dependence of the low level threshold voltage (VIL) upon RRC and Vbat can be described by the following equation: V
+ (max)
T
J(max) R
-T
A
qJA
IL
]
V 0.09 5.32 kW
* Vbat
505
R
RC
505 (1.6)
) 2.02 kW
W
(1)
where: RJA = thermal resistance (typ., 100C/W for the DIP and 125C/W for the SOIC packages); TJ(max) = maximum operating junction temperature (150C); and TA = ambient temperature. PD = {[(VCC - VOH) IOH] or [(VOL)IOL]} each receiver + (VCC CC)
I
) 6.67 R 106 W2
W
RC
where: VCC = positive supply voltage; VOH, VOL = measured or estimated from Figure 2 and 3; ICC = measured quiescent supply current. As indicated, the first term (in brackets) must be calculated and summed for each of the four receivers, while the last term is common to the entire package.
VIH can be found by calculating for VIL using equation (1) then adding the hysteresis for each device (0.35 for the
MOTOROLA ANALOG IC DEVICE DATA
5
MC14C89B, AB
OUTLINE DIMENSIONS
P SUFFIX PLASTIC PACKAGE CASE 646-06 ISSUE L
14 8
B
1 7
NOTES: 1. LEADS WITHIN 0.13 (0.005) RADIUS OF TRUE POSITION AT SEATING PLANE AT MAXIMUM MATERIAL CONDITION. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 4. ROUNDED CORNERS OPTIONAL. DIM A B C D F G H J K L M N INCHES MIN MAX 0.715 0.770 0.240 0.260 0.145 0.185 0.015 0.021 0.040 0.070 0.100 BSC 0.052 0.095 0.008 0.015 0.115 0.135 0.300 BSC 0_ 10_ 0.015 0.039 MILLIMETERS MIN MAX 18.16 19.56 6.10 6.60 3.69 4.69 0.38 0.53 1.02 1.78 2.54 BSC 1.32 2.41 0.20 0.38 2.92 3.43 7.62 BSC 0_ 10_ 0.39 1.01
A F C N H G D
SEATING PLANE
L
J K M
-A-
14 8
D SUFFIX PLASTIC PACKAGE CASE 751A-03 (SO-14) ISSUE F
-B-
1 7
P 7 PL 0.25 (0.010)
M
B
M
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION.
G C
R X 45 _
F
-T-
SEATING PLANE
D 14 PL 0.25 (0.010)
K
M
M
S
J
TB
A
S
DIM A B C D F G J K M P R
MILLIMETERS MIN MAX 8.55 8.75 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50
INCHES MIN MAX 0.337 0.344 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.228 0.244 0.010 0.019
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6
*MC14C89B/D*
MOTOROLA ANALOG IC DEVICE DATA MC14C89B/D

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