Order this document by MC14C88B/D
MC14C88B
Quad Low Power Line Driver
The MC14C88B is a low power monolithic quad line driver, using BiMOS
technology, which conforms to EIA–232–D, EIA–562, and CCITT V.28. The
inputs feature TTL and CMOS compatibility with minimal loading. The
outputs feature internally controlled slew rate limiting, eliminating the need
for external capacitors. Power off output impedance exceeds 300
W
, and
current limiting protects the outputs in the event of short circuits.
Power supply current is less than 160
m
A over the supply voltage range of
±4.5
to
±15
V. EIA–232–D performance is guaranteed with a minimum
supply voltage of
±6.5
V.
The MC14C88B is pin compatible with the MC1488, SN75188,
SN75C188, DS1488, and DS14C88. This device is available in 14 pin plastic
DIP, and surface mount packaging.
Features:
•
BiMOS Technology for Low Power Operation ( 5.0 mW)
QUAD LOW POWER
LINE DRIVER
SEMICONDUCTOR
TECHNICAL DATA
•
•
•
•
•
•
•
•
t
Meets Requirements of EIA–232–D, EIA–562, and CCITT V.28
Quiescent Current Less Than 160
m
A
TTL/CMOS Compatible Inputs
P SUFFIX
PLASTIC PACKAGE
CASE 646
Minimum 300
W
Output Impedance when Powered Off
Supply Voltage Range:
±4.5
to
±15
V
Pin Equivalent to MC1488
Current Limited Output: 10 mA Minimum
Operating Ambient Temperature: –40° to 85°C
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
VEE
Input A
Output A
Input B1
1
2
3
4
5
6
7
14
13
12
11
10
9
8
VCC
Input D1
Input D2
Output D
Input C1
Input C2
Output C
Representative Block Diagram
(Each Driver)
VCC
Input B2
Output B
Gnd
(Top View)
Input 1
Slew Rate
Control
Input 2
39
39
Switching
Control
VEE
45
250
Output
ORDERING INFORMATION
Device
MC14C88BP
MC14C88BD
Operating
Temperature Range
TA = – 40° to +85°C
Package
Plastic DIP
SO–14
©
Motorola, Inc. 1996
Rev 0
MOTOROLA ANALOG IC DEVICE DATA
1
MC14C88B
MAXIMUM RATINGS
(TA = +25°C, unless otherwise noted.)
Rating
Power Supply Voltage
VCC(max)
VEE(min)
(VCC – VEE)max
Input Voltage (All Inputs)
Symbol
VCC
VEE
VCC – VEE
Value
+17
–17
34
VEE–0.3, VEE+39
Vdc
Unit
Vdc
Applied Output Voltage, when VCC=VEE 0 V
Applied Output Voltage, when VCC=VEE = 0 V
Output Current
Operating Junction Temperature
0
Vin
VX
IO
TJ
VEE–6.0 V, VCC+6.0 V Vdc
±15
Self Limiting
– 65, + 150
mA
°C
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 (All Inputs)
Applied Output Voltage (VCC=VEE=0 V)
Output DC Load
Operating Ambient Temperature Range
All limits are not necessarily functional concurrently.
Symbol
VCC
VEE
Vin
VO
RL
TA
Min
+4.5
–15
0
–2.0
3.0
–40
Typ
–
–
–
0
–
–
Max
+15
–4.5
VCC
+2.0
7.0
+85
Unit
Vdc
Vdc
Vdc
kΩ
°C
ELECTRICAL CHARACTERISTICS
(–40°C
Characteristic
Supply Current (Iout = 0, see Figure 2)
ICC @ 4.75 V
VCC, –VEE
15 V
Outputs High
Outputs Low
IEE
Outputs High
Outputs Low
p
TA
p
+85°C, unless otherwise noted.)*
Symbol
Min
Typ
Max
Unit
µA
ICC (OH)
ICC (OL)
IEE (OH)
IEE (OL)
VOH
3.7
4.0
5.0
10
–
VOL
–
–
–
–
–13.2
IOS
–35
+10
RO
300
–
–
–
–10
+35
–
Ω
p
p
–
–
–160
–160
–
–
–
–
3.8
4.3
6.1
10.5
13.2
–3.8
–4.2
–6.0
–10.5
–13.2
160
160
–
–
Vdc
–
–
–
–
13.2
–3.7
–4.0
–5.0
–10
–
mA
Output Voltage – High, Vin 0.8 V (RL = 3.0 kΩ , see Figure 3)
VCC = +4.75 V, VEE = –4.75 V
VCC = +5.0 V, VEE = –5.0 V
VCC = +6.5 V, VEE = –6.5 V
VCC = +12 V, VEE = –12 V
VCC = +13.2 V, VEE = –13.2 V (RL =
∞)
Output Voltage – Low, Vin 2.0 V
VCC = +4.75 V, VEE = –4.75 V
VCC = +5.0 V, VEE = –5.0 V
VCC = +6.5 V, VEE = –6.5 V
VCC = +12 V, VEE = –12 V
VCC = +13.2 V, VEE = –13.2 V (RL =
∞)
p
q
Output Short Circuit Current** (see Figure 4) (VCC =VEE
= 15 V )
Normally High Output, shorted to ground
Normally Low Output, shorted to ground
Output Source Resistance
(VCC = VEE = 0 V, –2.0 V
Input Voltage
Low Level
High Level
* Typicals reflect performance @ TA = 25°C
** Only one output shorted at a time, for not more than 1 second.
p
Vout
p
+2.0 V)
VIL
VIH
0
2.0
–
–
0.8
VCC
Vdc
2
MOTOROLA ANALOG IC DEVICE DATA
MC14C88B
ELECTRICAL CHARACTERISTICS (continued)
(–40°C
Characteristic
Input Current
Vin = 0 V, VCC =
VEE
= 4.75 V
Vin = 0 V, VCC =
VEE
= 15 V
Vin = 4.5 V, VCC =
VEE
= 4.75 V
Vin = 4.5 V, VCC =
VEE
= 15 V
p
TA
p
+85°C, unless otherwise noted.)*
Symbol
Iin
–10
–10
0
0
–0.1
–0.1
+0.1
+0.1
0
0
+10
+10
Min
Typ
Max
Unit
µA
TIMING CHARACTERISTICS
(–40°C
Characteristic
Output Rise Time
VCC = 4.75 V, VEE = –4.75 V
–3.3 V VO
3.3 V
CL = 15 pF
CL = 1000 pF
–3.0 V VO
3.0 V
CL = 15 pF
CL = 1000 pF
VCC = 12.0 V, VEE = –12.0 V
–3.0 V VO
3.0 V
CL = 15 pF
CL = 2500 pF
10% VO
90%
CL = 15 pF
p
TA
p
+85°C, unless otherwise noted.)*
Symbol
Min
Typ
Max
Unit
µs
tR1
0.22
0.22
tR2
0.20
0.20
0.51
1.16
1.5
1.5
0.66
1.52
2.1
2.1
p p
p p
p p
p p
0.20
0.20
tR3
0.53
0.62
0.82
1.41
1.5
1.5
3.2
µs
Output Fall Time
VCC = 4.75 V, VEE = –4.75 V
3.3 V VO
–3.3 V
CL = 15 pF
CL = 1000 pF
3.0 V VO
–3.0 V
CL = 15 pF
CL = 1000 pF
VCC = 12.0 V, VEE = –12.0 V
3.0 V VO
–3.0 V
CL = 15 pF
CL = 2500 pF
90% VO
10%
CL = 15 pF
p p
tF1
0.22
0.22
tF2
0.20
0.20
0.72
1.01
1.5
1.5
0.93
1.28
2.1
2.1
p p
p p
p p
0.20
0.20
tF3
0.53
SR
4.0
0.70
0.94
1.71
–
1.5
1.5
3.2
30
V/µs
µs
Output Slew Rate, 3.0 kΩ
t
RL
t
7.0 kΩ , 15 pF
t
CL
t
2500 pF
Propagation Delay A (CL = 15 pF, see Figure 1)
VCC = 12.0 V, VEE = –12.0 V
Input to Output – Low to High
Input to Output – High to Low
Propagation Delay B (CL = 15 pF, see Figure 1)
VCC = 4.75 V, VEE = –4.75 V
Input to Output – Low to High
Input to Output – High to Low
* Typicals reflect performance @ TA = 25
°
C
tPLH
tPHL
–
–
0.9
2.3
3.0
3.5
tPLH
tPHL
–
–
0.4
1.5
2.0
2.5
MOTOROLA ANALOG IC DEVICE DATA
3
MC14C88B
Figure 1. Timing Diagram
3.0 V
S.G.
VCC
3.0 k
CL
0V
tPHL
S.G.
VEE
VOUT
90%
3.3 V
3.0 V
0V
–3.0 V
–3.3 V
tPLH
VOH
1.5 V
NOTES:
S.G. set to: f = 20 kHz for Propogation Delay A
and f = 64 kHz for Propagation Delay B; Duty
Cycle = 50%; tR, tF 5.0 ns
p
Vout
tF2
tF1
tF3
10%
tR2
VOL
tR1
tR3
STANDARDS COMPLIANCE
The MC14C88 is designed to comply with EIA–232–D
(formerly RS–232), the newer EIA–562 (which is a higher
speed version of the EIA–232), and CCITT’s V.28. EIA–562
was written around modern integrated circuit technology,
whereas EIA–232 retains many of the specs written around
Parameter
Maximum Data Rate
Maximum Cable Length
Maximum Slew Rate
Transition Region
Transition Time
20 kbaud
50 feet
the 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 drivers.
EIA–562
38.4 kbaud Asynchronous
64 kbaud Synchronous
Based on cable capacitance/data rate
EIA–232–D
p
30 V/µs anywhere on the waveform
–3.0 to +3.0 V
For UI
25 ms, tR 1.0 ms
For 25 ms > UI > 125
µs,
tR
4% UI
5.0
µs
For UI
125
µs,
tR
More negative than –3.0 V
More positive than +3.0 V
Yes, to any system voltage
p
30 V/µs anywhere on the waveform
q
4.0 V/µs between +3.0 and –3.0 V
–3.3 to +3.3 V
For UI
50
µs,
220 ns
tR
For UI
50
µs,
220 ns
tR
(within the transition region)
More negative than –3.3 V
More positive than +3.3 V
Yes, to ground
q
t
p
p
p
q
t
t p
3.1
µs
t p
2.1
µs
MARK (one, off)
Space (zero, on)
Short Circuit Proof ?
Short Circuit Current
Open Circuit Voltage
Loaded Output Voltage
Power Off Input Source Impedance
NOTE:
p
500 mA to any system voltage
VOC
3.0 kΩ and 7.0 kΩ
p
25 V
5.0 V
p
VO
p
15 V for loads between
q
300
Ω
for
VO
p
2.0 V
p
60 mA to ground
VOC
t
13.2 V
VO
q
3.7 V for a load of 3.0 kΩ
q
300
Ω
for
VO
p
2.0 V
UI = Unit Interval, or bit time.
V.28 standard has the same specifications as EIA–232, with the exception of transition time which is listed as “less than 1.0 ms, or 3% of the UI,
whichever is less”.
4
MOTOROLA ANALOG IC DEVICE DATA
MC14C88B
Figure 2. Typical Supply Current
versus Supply Voltage
I CC , I EE, SHORT CIRCUIT CURRENT (
µ
A)
110
16
ICC(OL)
12
ICC(OH)
OUTPUT VOLTAGE (V)
55
8.0
4.0
0
–4.0
–8.0
–12
–16
6.0
8.0
10
12
14
16
4.0
6.0
8.0
10
12
14
VCC AND –VEE, (V)
VCC AND –VEE, (V)
VOL
1
2
3
16
Vin
(0.8 or 2.0 V)
VEE
VOH
VCC
Figure 3. Typical Output Voltage
versus Supply Voltage
12
3
1 – RL =
∞
2 – RL = 7.0 kΩ
3 – RL = 3.0 kΩ
0
RL
Vout
1 – RL = 3.0 kΩ
2 – RL = 7.0 kΩ
3 – RL =
∞
–55
IEE(OH)
–110
IEE(OL)
4.0
Figure 4. Typical Short Circuit Current
versus Supply Voltage
30
I SC , SHORT CIRCUIT CURRENT (mA)
ISC Normally Low Output
20
10
0
–10
–20
ISC Normally High Output
–30
4.0
6.0
8.0
10
12
14
16
VCC AND –VEE, (V)
–15
–40
Vin
(0.8 or 2.0 V)
VEE
VCC
OUTPUT VOLTAGE (V)
15
Figure 5. Typical Output Voltage
versus Temperature
VOH @ VCC = –VEE = 12 V
10
VOH @ VCC = –VEE = 4.5 V
5.0
0
VOL @ VCC = –VEE = 4.5 V
–5.0
VOL @ VCC = –VEE = 12 V
–10
RL = 3.0 kΩ
22
TA, AMBIENT TEMPERATURE (°C)
85
ISC
MOTOROLA ANALOG IC DEVICE DATA
5
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