SN75LBC776DW [TI]

SINGLE-CHIP GeoPortE TRANSCEIVER; 单芯片收发器GeoPortE
SN75LBC776DW
型号: SN75LBC776DW
厂家: TEXAS INSTRUMENTS    TEXAS INSTRUMENTS
描述:

SINGLE-CHIP GeoPortE TRANSCEIVER
单芯片收发器GeoPortE

驱动器 接口集成电路 光电二极管 信息通信管理
文件: 总14页 (文件大小:210K)
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SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
DW PACKAGE  
(TOP VIEW)  
Single-Chip Interface Solution for the  
9-terminal GeoPort Host (DTE)  
Designed to Operate up to 4 Mbit/s Full  
Duplex  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DA1  
GND  
V
V
EE  
CC  
Single 5-V Supply Operation  
C–  
C+  
DY1  
RY3  
RB3  
RA2  
RY2  
RB1  
RA1  
RY1  
6-kV ESD Protection on All Terminals  
SHDN  
DZ2  
DY2  
GND  
DEN  
DA2  
Backward compatible With AppleTalk and  
LocalTalk  
Combines Multiple Components into a  
Single-chip Solution  
Complements the SN75LBC777 9-Terminal  
GeoPort Peripheral (DCE) Interface Device  
LinBiCMOS Process Technology  
description  
The SN75LBC776 is a low-power LinBiCMOS device that incorporates the drivers and receivers for a 9-pin  
GeoPort host interface. GeoPort combines hybrid EIA/TIA-422-B and EIA/TIA-423-B drivers and receivers to  
transmit data up to four megabits per second (Mbit/s) full duplex. GeoPort is a serial communications standard  
that is intended to replace the RS-232, Appletalk, and LocalTalk printer ports all in one connector in addition  
to providing real-time data transfer capability. It provides point-to-point connections between  
GeoPort-compatible devices with data transmission rates up to 4 Mbit/s full duplex and a hot-plug feature.  
Applications include connection to telephony, integrated services digital network (ISDN), digital sound and  
imaging, fax-data modems, and other serial and parallel connections. The GeoPort is backwardly compatible  
to both LocalTalk and AppleTalk.  
WhiletheSN75LBC776ispowered-off(V =0)theoutputsareinahigh-impedancestate. Whentheshutdown  
CC  
(SHDN) terminal is high, the charge pump is powered down and the outputs are in a high-impedance state. The  
driver enable (DEN) terminal sends the outputs of the differential driver into a high-impedance state with a high  
input signal. All drivers and receivers have fail-safe mechanisms to ensure a high output state when the inputs  
are left open.  
A switched-capacitor voltage converter generates the negative voltage required from a single 5-V supply using  
four 0.1-µF capacitors, two capacitors between the C+ and C- terminals and two capacitors between V and  
EE  
ground.  
The SN75LBC776 is characterized for operation over the 0°C to 70°C temperature range.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
GeoPort, LocalTalk, and AppleTalk are trademarks of Apple Computer, Incorporated.  
LinBiCMOS is a trademark of Texas Instruments Incorporated.  
Copyright 1996, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
DRIVER FUNCTION TABLE  
OUTPUT  
INPUT  
DA1  
INPUT  
DA2  
ENABLE  
SHDN  
ENABLE  
DEN  
OUTPUT  
DY1  
DY2  
DZ2  
X
H
X
L
X
L
H
X
X
L
X
X
H
L
L
X
L
X
X
X
H
L
L
L
X
L
L
L
H
L
OPEN  
OPEN  
L
L
X
H
Z
Z
Z
X
X
X
X
X
X
H
X
Z
X
Z
Z
H
Z
OPEN  
OPEN  
Z
H = high level L = low level  
X = irrelevant  
? = indeterminate Z = high impedance (off)  
RECEIVER FUNCTION TABLE  
INPUT  
RA1 RB1  
INPUT  
RA2 & RB3  
ENABLE  
SHDN  
OUTPUT  
RY1  
OUTPUT  
RY2  
OUTPUT  
RY3  
H
L
L
H
L
L
H
L
H
L
L
H
L
H
OPEN  
OPEN  
L
H
?
H
?
H
SHORT  
SHORT  
L
H
?
X
X
X
X
X
Z
Z
Z
Z
Z
X
OPEN  
Z
H = high level L = low level  
0.2 V < V < 0.2 V  
X = irrelevant  
? = indeterminate Z = high impedance (off)  
ID  
function logic diagram (positive logic)  
7
DY2  
10  
DA2  
6
DZ2  
9
DEN  
12  
RA1  
11  
RY1  
13  
RB1  
1
18  
DY1  
DA1  
15  
RA2  
14  
RY2  
17  
RY3  
16  
RB3  
5
SHDN  
19  
V
Charge  
Pump  
CC  
2
V
EE  
(5 V)  
20  
GND  
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Positive supply voltage range, V  
Negative supply voltage range, V (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 to 0.5 V  
Receiver input voltage range (RA, RB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V to 15 V  
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 to 7 V  
CC  
EE  
Receiver differential input voltage range, V  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 to 12 V  
ID  
Receiver output voltage range (RY) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to 5.5 V  
Driver output voltage range (Power Off) (DY1, DY2, DZ2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 V to 15 V  
Driver output voltage range (Power On) (DY1, DY2, DZ2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 V to 11 V  
Driver input voltage range (DA, SHND, DEN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 V to V  
0.4 V  
CC+  
Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table  
Electrostatic discharge (see Note 2): (Bus terminals), Class 3, A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 kV  
(Bus terminals), Class 3, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 V  
(All terminals), Class 3, A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 kV  
(All terminals), Class 3, B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500 V  
Operating free-air temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C  
A
Storage temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C  
stg  
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C  
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and  
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
NOTES: 1. All voltage values are with respect to network ground terminal unless otherwise noted.  
2. This parameter is measured in accordance with MIL-STD-883C, Method 3015.7.  
DISSIPATION RATING TABLE  
T
25°C  
OPERATING FACTOR  
T = 70°C  
A
POWER RATING  
A
PACKAGE  
POWER RATING  
ABOVE T = 25°C  
A
DW  
1125 mW  
9.0 mW/°C  
720 mW  
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
recommended operating conditions  
MIN NOM  
MAX  
5.25  
5.25  
0.8  
7
UNIT  
V
Supply voltage, V  
4.75  
2
5
CC  
High-level input voltage, V  
DA, SHDN, DEN  
DA, SHDN, DEN  
V
IH  
Low-level input voltage, V  
V
IL  
Receiver common-mode input voltage, V  
IC  
–7  
–12  
0.2  
V
Receiver differential input voltage, V  
Voltage-converter filter capacitance  
12  
V
ID  
µF  
Voltage-converter filter-capacitor equivalent series resistance (ESR)  
Operating free-air temperature, T  
0.2  
70  
0
°C  
A
driver electrical characteristics over operating free-air temperature range (unless otherwise  
noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
3.6  
2
TYP  
4.53  
MAX  
UNIT  
R
R
R
R
= 12 kΩ  
= 120 Ω  
= 12 kΩ  
= 120 Ω  
V
V
V
V
L
L
L
L
V
V
High-level output voltage  
OH  
3.63  
Single ended,  
See Figure 1  
4.53  
2.7  
3.6  
1.8  
Low-level output voltage  
OL  
Magnitude of differential output voltage  
|V  
|
4
V
OD  
|(V  
– V  
|
(DZ)  
(DY)  
R
= 120 Ω,  
See Figure 2  
L
|V  
|
Change in differential voltage magnitude  
Common-mode output voltage  
250  
3
mV  
V
OD  
V
OC  
–1  
Magnitude of change, common-mode steady  
state output voltage  
|V  
|
|
200  
mV  
mV  
OC(SS)  
OC(PP)  
See Figure 3  
Magnitude of change, common-mode  
peak-to-peak output voltage  
|V  
700  
7
SHDN = DEN = 0 V,  
SHDN = DEN = 5 V,  
No load  
No load  
15  
100  
mA  
µA  
I
Supply current  
CC  
I
I
High-impedance output current  
V
= –10 V to 10 V,  
= 5 V to 5 V  
V = 0 or 5 V  
CC  
±100  
µA  
OZ  
O
O
Short-circuit output current (see Note 3)  
V
±170 ±450  
mA  
OS  
NOTE 3: Not more than one output should be shorted at one time.  
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
driver switching characteristics over operating free-air temperature range (unless otherwise  
noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
TYP  
42  
41  
25  
25  
28  
37  
25  
23  
40  
42  
25  
29  
25  
35  
28  
34  
37  
34  
27  
26  
MAX  
75  
UNIT  
ns  
ns  
µs  
µs  
ns  
ns  
ns  
ns  
ns  
ns  
µs  
ns  
µs  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
t
t
t
t
t
t
t
t
t
t
Propagation delay time, high-to-low level output  
Propagation delay time, low-to-high level output  
Driver output enable time to low-level output  
Driver output enable time to high-level output  
Driver output disable time from low-level output  
Driver output disable time from high-level output  
Rise time  
PHL  
PLH  
PZL  
PZH  
PLZ  
PHZ  
r
75  
100  
100  
100  
100  
75  
Single ended,  
See Figure 4  
SHDN  
10  
10  
Fall time  
75  
f
Propagation delay time, high-to-low level output  
Propagation delay time, low-to-high level output  
75  
PHL  
PLH  
75  
SHDN  
DEN  
100  
150  
100  
150  
100  
100  
100  
100  
75  
t
t
t
t
Driver output enable time to low-level output  
Driver output enable time to high-level output  
Driver output disable time from low-level output  
Driver output disable time from high-level output  
PZL  
PZH  
PLZ  
PHZ  
SHDN  
DEN  
Differential,  
See Figure 5  
SHDN  
DEN  
SHDN  
DEN  
t
t
t
Rise time  
Fall time  
10  
10  
r
75  
f
Pulse skew, |t  
– t  
|
22  
SK(p)  
PLH PHL  
receiver electrical characteristics over operating free-air temperature range (unless otherwise  
noted)  
PARAMETER  
TEST CONDITIONS  
MIN  
200  
2
TYP  
MAX  
UNIT  
V
IT+  
V
IT–  
V
hys  
V
OH  
V
OL  
Positive-going input threshold voltage  
Negative-going input threshold voltage  
200  
mV  
See Figure 6  
Differential input voltage hysteresis (V  
High-level output voltage (see Note 4)  
Low-level output voltage  
– V  
)
IT–  
50  
4.9  
0.2  
45  
47  
mV  
V
IT+  
V
V
V
V
V
= 0,  
= 0,  
= 0  
I
I
= –2 mA, See Figure 6  
IC  
IC  
O
OH  
= 2 mA,  
See Figure 6  
0.8  
V
OL  
85  
I
Short-circuit output current  
Input resistance  
mA  
OS  
= V  
+85  
O
CC  
= 0 or 5.25 V,  
V = –12 V to 12 V  
CC  
R
6
30  
kΩ  
I
I
NOTE 4: When the inputs are left unconnected, receivers one and two interpret these as high-level inputs and receiver three interprets these  
as low-level inputs so that all outputs are at a high level.  
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
receiver switching characteristics over operating free-air temperature range (unless otherwise  
noted)  
PARAMETER  
Propagation delay time, high-to-low-level output  
Propagation delay time, low-to-high level output  
Rise time  
TEST CONDITIONS  
MIN  
TYP  
31  
MAX  
75  
UNIT  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
µs  
µs  
ns  
ns  
t
t
t
t
t
t
t
t
t
t
t
t
t
PHL  
PLH  
r
30  
75  
R
= 2 kΩ,  
See Figure 6  
C
= 15 pF,  
L
L
15  
30  
Fall time  
15  
30  
f
Pulse skew |t  
–t  
|
20  
SK(P)  
PZL  
PZH  
PLZ  
PHZ  
PZL  
PZH  
PLZ  
PHZ  
PLH PHL  
Receiver output enable time to low level output  
Receiver output enable time to high level output  
Receiver output disable time from low level output  
Receiver output disable time from high level output  
Receiver output enable time to low level output  
Receiver output enable time to high level output  
Receiver output disable time from low level output  
Receiver output disable time from high level output  
35  
32  
100  
100  
100  
100  
25  
Differential,  
See Figure 7  
C
C
=50 pF,  
=50 pF,  
L
21  
21  
12  
12  
25  
Single ended,  
See Figure 7  
L
25  
100  
400  
125  
6
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
PARAMETER MEASUREMENT INFORMATION  
C
C
L
L
I
O
R
R
L
L
C
R
L
L
DY2  
DZ2  
I
I
O
I
DY1  
I
I
V
V
O
DA1  
DA2  
I
O
V
V
V
I
I
O
SHDN  
O
SHDN  
or  
DEN  
NOTE A: C = 50 pF  
L
TEST CIRCUIT  
Figure 1. Single-Ended Driver DC Parameter Test  
DY2  
DZ2  
60 Ω  
60 Ω  
I
I
O
I
V
OD  
DA2  
V
I
50 pF  
SHDN  
or  
DEN  
TEST CIRCUIT  
Figure 2. Differential Driver DC Parameter Test  
DY2  
DZ2  
60 Ω  
60 Ω  
V
OD  
DA2  
V
I
V
OC  
15 pF  
SHDN  
or  
DEN  
TEST CIRCUIT (see Note A)  
3 V  
0 V  
V
I
1.5 v  
1.5 v  
V
OC  
0 V  
V
OC(SS)  
V
OC(PP)  
VOLTAGE WAVEFORM  
NOTE A: Measured 3dB bandwidth = 300 MHz  
Figure 3. Differential-Driver Common-Mode Output Voltage Tests  
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
PARAMETER MEASUREMENT INFORMATION  
C
C
L
L
I
O
R
R
L
L
C
= 50 pF  
L
DY2  
DZ2  
I
I
V
V
O
DY1  
DA1  
DA2  
R
= 120 Ω  
L
I
O
V
O
V
I
SHDN  
O
SHDN  
or  
DEN  
TEST CIRCUIT  
(see Note A)  
3 V  
0 V  
SHDN  
or  
DEN  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
3 V  
0 V  
1.5 V  
1.5 V  
DA  
t
PLH  
t
t
t
PZL  
t
PHL  
PLZ  
PHZ  
V
OH  
90%  
90%  
90%  
DY1, DZ2  
10%  
90%  
0 V  
50%  
10%  
50%  
10%  
10%  
V
OL  
t
PZH  
t
PLZ  
t
f
t
r
t
t
PHL  
PHZ  
t
PLH  
t
PZH  
V
OH  
DY2  
90%  
90%  
90%  
10%  
90%  
50%  
0 V  
50%  
10%  
10%  
10%  
V
OL  
t
t
f
t
r
PZL  
VOLTAGE WAVEFORM  
(see Note B)  
NOTES: A.  
C = 50 pF, R = 120 Ω  
L L  
B. The input waveform t , t 10 ns.  
r f  
Figure 4. Single-Ended Driver Propagation and Transition Times  
8
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
PARAMETER MEASUREMENT INFORMATION  
DY2  
DZ2  
R
R
60 Ω  
60 Ω  
L =  
L =  
V
OD  
DA2  
V
I
50 pF  
SHDN  
or  
DEN  
TEST CIRCUIT  
3 V  
0 V  
SHDN  
or  
DEN  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
3 V  
0 V  
1.5 V  
1.5 V  
DA  
t
PHL  
t
t
t
t
PLH  
PHZ  
PZH  
PLZ  
V
OD(H)  
90%  
90%  
90%  
V
OD  
10%  
50%  
10%  
50%  
10%  
0 V  
90%  
10%  
V
OD(L)  
t
PZL  
t
f
t
r
VOLTAGE WAVEFORM  
(see Note A)  
Figure 5. Differential Driver Propagation and Transition Times  
V
CC  
2 kΩ  
2.5 V  
V
0 V  
0 V  
I
I
I
2.5 V  
RA  
RB  
I
O
+
_
Input  
t
t
RY  
PLH  
PHL  
Output  
V
OH  
V
I
90%  
90%  
V
O
V
O
1.5 V  
15 pF  
10%  
10%  
V
OL  
SHDN  
t
r
t
f
TEST CIRCUIT  
VOLTAGE WAVEFORM  
(see Note A)  
Figure 6. Receiver Propagation and Transition Times  
NOTE A: The input waveform t , t 10 ns.  
r f  
9
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
PARAMETER MEASUREMENT INFORMATION  
V
CC  
RA  
RB  
R
= 500 Ω  
+
_
L
2.5 V or 2.5 V  
RY  
S1  
C
= 50 pF  
L
SHDN  
TEST CIRCUIT  
3 V  
0 V  
SHDN  
1.5 V  
1.5 V  
90%  
t
t
PZL  
PLZ  
V
CC  
S1 at V  
CC  
10%  
90%  
V
OL  
OH  
V
O
t
t
PZH  
PHZ  
V
S1 at GND  
10%  
0 V  
VOLTAGE WAVEFORM  
(see Note A)  
NOTE A: The input waveform t , t 10 ns.  
r f  
Figure 7. Receiver Enable and Disable Test Circuit and Waveforms  
10  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
APPLICATION INFORMATION  
RxD  
11  
13  
12  
RxD–  
GeoPort  
Host  
SN75LBC776  
9-Terminal  
DTE  
GeoPort  
Peripheral  
Device  
9-Pin  
RxD+  
TxD+  
7
6
10  
5
TxD  
SHDN  
DTR  
TxD–  
DCE  
GeoPort  
Controller  
and USART  
GND  
1
RESET/ATT  
SCLK  
18  
15  
RESET/ATT  
SCLK  
14  
17  
9
RTXC  
CTS  
Power  
TxHS/WAKE-UP  
16  
RTS  
TxHS/WAKE-UP  
V
CC  
RxD–  
RxD+  
13  
12  
Standard  
Host  
SN75LBC776  
9-Terminal  
DTE  
19  
16 TxHS/WAKE-UP  
4
3
+
+
+
7
6
TxD+  
TxD–  
0.1 µF  
0.1 µF  
6
7
8
V
CC  
3
4
1
9
2
5
–5 V  
(see Note A)  
V
EE  
GND  
2
Power  
0.1 µF  
0.1 µF  
18  
15  
RESET/ATT  
SCLK  
+
8
20  
NOTE A: The AVX 0603YC104MATXA or equivalent is one of the possible capacitors that can be used as the charge pump capacitor.  
Figure 8. GeoPort 9-Terminal DTE Connection Application  
11  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
APPLICATION INFORMATION  
generator characteristics  
EIA/TIA-232/V.28  
EIA/TIA-423/V.10  
562  
MIN  
PARAMETER  
TEST CONDITIONS  
UNIT  
MIN  
MAX  
25  
MIN  
4
MAX  
MAX  
Open circuit  
6
13.2  
V
V
V
|V  
|
Output voltage magnitude  
3 kR 7 kΩ  
5
NA  
NA  
15  
NA  
3.6  
3.7  
NA  
O
L
R
= 450 Ω  
L
V
Output voltage ringing  
10%  
150  
5%  
60  
O(RING)  
I
Short-circuit output current  
V
V
V
= 0  
100  
mA  
OS  
O(OFF)  
O
= 0, |V | < 2 V  
300  
NA  
NA  
300  
NA  
4
CC  
CC  
O
I
Power-off output current  
Output voltage slew rate  
= 0, |V | < 6 V  
±100  
µA  
O
SR  
30  
NA  
NA  
NA  
30  
V/µs  
µs  
±3.3 V to ±3.3 V  
±3 V to ±3 V  
10% to 90%  
NA  
NA  
0.22  
NA  
NA  
2.1  
t
t
Transition time  
0.04  
ui  
ui  
0.3  
ui is the unit interval and is the inverse of the signaling rate (bit transmit time).  
receiver characteristics  
EIA/TIA-232/V.28  
EIA/TIA-423/V.10  
562  
PARAMETER  
TEST CONDITIONS  
UNIT  
V
MIN  
MAX  
25  
MIN  
MAX  
MIN  
MAX  
25  
|V |  
I
Input voltage magnitude  
Input voltage threshold  
10  
|V | < 15 V  
–3  
NA  
3
3
NA  
0.2  
NA  
4
–3  
NA  
3
3
I
V
IT  
V
|V | < 10 V  
0.2  
I
3 V < |V | < 15 V  
7
7
kΩ  
kΩ  
I
R
Input resistance  
I
|V | < 10 V  
NA  
NA  
I
12  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN75LBC776  
SINGLE-CHIP GeoPort TRANSCEIVER  
SLLS221A – NOVEMBER 1995 – REVISED JANUARY 1996  
MECHANICAL INFORMATION  
DW (R-PDSO-G**)  
PLASTIC SMALL-OUTLINE PACKAGE  
16 PIN SHOWN  
PINS **  
0.050 (1,27)  
16  
20  
24  
28  
DIM  
0.020 (0,51)  
0.014 (0,35)  
0.010 (0,25)  
M
0.410  
0.510  
0.610  
0.710  
A MAX  
(10,41) (12,95) (15,49) (18,03)  
16  
9
0.400  
0.500  
0.600  
0.700  
A MIN  
(10,16) (12,70) (15,24) (17,78)  
0.419 (10,65)  
0.400 (10,15)  
0.010 (0,25) NOM  
0.299 (7,59)  
0.293 (7,45)  
Gage Plane  
0.010 (0,25)  
1
8
0°8°  
0.050 (1,27)  
0.016 (0,40)  
A
Seating Plane  
0.004 (0,10)  
0.012 (0,30)  
0.004 (0,10)  
0.104 (2,65) MAX  
4040000/B 10/94  
NOTES: A. All linear dimensions are in inches (millimeters).  
B. This drawing is subject to change without notice.  
C. Body dimensions do not include mold flash or protrusion not to exceed 0.006 (0,15).  
D. Falls within JEDEC MS-013  
13  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
IMPORTANT NOTICE  
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue  
any product or service without notice, and advise customers to obtain the latest version of relevant information  
to verify, before placing orders, that information being relied on is current and complete. All products are sold  
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those  
pertaining to warranty, patent infringement, and limitation of liability.  
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent  
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily  
performed, except those mandated by government requirements.  
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF  
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL  
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR  
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER  
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO  
BE FULLY AT THE CUSTOMER’S RISK.  
In order to minimize risks associated with the customer’s applications, adequate design and operating  
safeguards must be provided by the customer to minimize inherent or procedural hazards.  
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent  
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other  
intellectual property right of TI covering or relating to any combination, machine, or process in which such  
semiconductor products or services might be or are used. TI’s publication of information regarding any third  
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.  
Copyright 1998, Texas Instruments Incorporated  

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