TL712 [TI]
DIFFERENTIAL COMPARATOR; 差分比较器
| 型号： | TL712 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | DIFFERENTIAL COMPARATOR |
| 文件： | 总5页 (文件大小：84K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TL712
DIFFERENTIAL COMPARATOR
SLCS002B – JUNE 1983 – REVISED DECEMBER 1992
D, JG, P, OR PW PACKAGE
(TOP VIEW)
Operates From a Single 5-V Supply
0 to 5 V Common-Mode Input Voltage
Range
NC
IN–
IN+
OE
V
CC
1
2
3
4
8
7
6
5
Self-Biased Inputs
OUT–
OUT+
GND
Complementary 3-State Outputs
Enable Capability
Hysteresis . . . 5 mV Typ
Response Times . . . 25 ns Typ
NC–No internal connection
symbol (positive logic)
description
4
2
3
The TL712 is a high-speed comparator fabricated
with bipolar Schottky process technology. The
circuit has differential analog inputs and
complementary 3-state TTL-compatible logic
OE
7
6
IN–
OUT–
OUT+
IN+
outputs
with
symmetrical
switching
characteristics. When the output enable, (OE), is
low, both outputs are in the high-impedance state.
This device operates from a single 5-V supply and
is useful as a disk memory read-chain data
comparator.
The TL712 is characterized for operation from
0°C to 70°C.
schematics of inputs and outputs
EQUIVALENT OF EACH
DIFFERENTIAL INPUT
EQUIVALENT OF EACH ENABLE INPUT
TYPICAL OF ALL OUTPUTS
V
V
CC
CC
V
CC
85 Ω
Nom
8.3 kΩ
Nom
960 Ω
Nom
4 kΩ
Nom
OE
Input
960 Ω
Nom
Output
Copyright 1992, 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
TL712
DIFFERENTIAL COMPARATOR
SLCS002B – JUNE 1983 – REVISED DECEMBER 1992
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
CC
Input voltage, V , any differential input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 V
I
Differential input voltage, V (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 V
ID
Enable input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Low-level output current, I
Operating free-air temperature range, T
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 mA
OL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
A
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . . . . . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, P, or PW package . . . . . . . . . . . . 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 in the “recommended operating conditions” section of
this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to the network ground.
2. Differential voltage values are at IN+ with respect to IN–.
recommended operating conditions
MIN NOM MAX
UNIT
V
Supply voltage, V
4.75
0
5
5.25
5
CC
Common-mode input voltage, V
V
IC
High-level output current, I
–1
16
70
mA
mA
°C
OH
Low-level output current, I
OL
Operating free-air temperature, T
0
A
electrical characteristics at V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
mV
mV
V
‡
V
V
V
V
Threshold voltage (V
T+
and V
)
V
= 0 to 5 V
–100
100
T
T–
ICR
Hysteresis (V
– V )
T–
5
3.5
0.4
hys
OH
OL
T+
High-level output voltage
Low-level output voltage
Off-state output current
Enable current
V
ID
V
ID
V
O
= 100 mV,
I
I
= –1 mA
= 16 mA
2.7
OH
= – 100 mV,
= 2.4 V
0.5
–20
100
V
OL
I
I
µA
µA
µA
µA
kΩ
W
OZ
V = 5.5 V
I
I
IIH
High-level enable current
Low-level enable current
DIfferential input resistance
Output resistance
V
= 2.7 V
= 0.4 V
20
IH
IL
I
IL
V
–360
r
r
4
i
100
–85
20
o
I
I
Short-circuit output current
Supply current
–15
mA
mA
OS
V
ID
= 0,No load
17
CC
‡
The algebraic convention, where the more negative limit is designated as minimum, is used in this data sheet for input threshold voltage levels
only.
switching characteristics, V
= 5 V, T = 25°C
A
CC
PARAMETER
TEST CONDITIONS
MIN
TYP MAX
UNIT
ns
t
t
Propagation delay time, low-to-high-level output
Propagation delay time, high-to-low-level output
25
25
PLH
PHL
TTL load, See Figure 1, See Note 3
ns
NOTE 3: The response time specified is for a 100-mV input step with 5-mV overdrive (105 mV total), and is the interval between the input step
function and the instant when the output crosses 2.5 V.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL712
DIFFERENTIAL COMPARATOR
SLCS002B – JUNE 1983 – REVISED DECEMBER 1992
PARAMETER MEASUREMENT INFORMATION
5 V
2 kΩ
Output
1N4148
Figure 1. TTL Output Load Circuit
TYPICAL CHARACTERISTICS
OUTPUT RESPONSE FOR VARIOUS
INPUT OVERDRIVE VOLTAGES
OUTPUT RESPONSE FOR VARIOUS
INPUT OVERDRIVE VOLTAGES
V
= 5 V
V
= 5 V
CC
TTL Load
= 25°C
CC
TTL Load
T = 25°C
A
T
A
100 mV + Overdrive
100 mV + Overdrive
5
4
3
2
1
0
5
4
3
2
1
0
100 mV
50 mV
20 mV
100 mV
50 mV
20 mV
5 mV
5 mV
0
5
10 15 20 25 30 35 40
t – Time – ns
0
5
10 15 20 25 30 35 40
t – Time – ns
Figure 2
Figure 3
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TL712
DIFFERENTIAL COMPARATOR
SLCS002B – JUNE 1983 – REVISED DECEMBER 1992
TYPICAL CHARACTERISTICS
COMMON-MODE
PULSE RESPONSE
4
3
2
1
0
V
T
A
= 5 V
CC
= 25°C
50 Ω
V
O
50 Ω
1.7
1.65
1.6
V
IC
1.55
1.5
0
20 40 60 80 100 120 140 160
t – Time – ns
Figure 4
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
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Copyright 1998, Texas Instruments Incorporated
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