參數(shù)資料
型號: MAX977ESD
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 運動控制電子
英文描述: Single/Dual, +3V/+5V Dual-Speed Comparators with Auto-Standby
中文描述: DUAL COMPARATOR, 3000 uV OFFSET-MAX, PDSO14
封裝: SOP-14
文件頁數(shù): 10/16頁
文件大?。?/td> 264K
代理商: MAX977ESD
M
S ingle/Dual, +3V /+5V Dual-S peed
Comparators with Auto-S tandby
10
______________________________________________________________________________________
_____________________________________________________________Pin Desc riptions
MAX975
Set Timeout Input. Connect a capacitor from STO to GND to program the time the comparator may
remain idle before entering standby mode. Connect STO to GND to disable the auto-standby fea-
ture. Calculate timeout with the following relationship: tASB = 10 x C
μ
s, where C is in pF.
STO
5
Ground
GND
6
Comparator Output
OUT
7
LP
8
Mode Status Pin. Indicates the operating mode. STAT is high for auto-standby mode or low-power
mode, and during the transition to high-speed mode. STAT = low indicates that the comparator is in
high-speed mode. STAT can source 3mA to power additional circuitry.
STAT
4
Inverting Comparator Input
IN-
3
PIN
Noninverting Comparator Input
IN+
2
Positive Supply Voltage, +2.7V to +5.25V
V
CC
1
FUNCTION
NAME
Low Power Mode Input. Drive LP high for low-power mode. Drive LP low for high-speed mode
(STO = GND) or for high-speed mode with auto-standby. Connect to GND if low-power mode will
not be used. Connect to V
CC
if high-speed mode will not be used.
FUNCTION
QSOP
1, 9
2, 10
3, 11
4, 5
8, 16
7, 15
6, 14
13
12
NAME
1, 8
STOA,
STOB
Set Idle Timeout Input A/B. Connect a capacitor from STOA/STOB to GND to program
the time in which comparator A/B may remain idle before entering standby mode.
Connect STOA/STOB to GND to disable the auto-standby feature for comparator A/B.
Calculate timeout with the following relationship: t
ASB
= 10 x C
μ
s, where C is in pF.
2, 9
GNDA, GNDB
Ground for Comparator A/B
3, 10
OUTA, OUTB
Output for Comparator A/B
4
V
CC
Positive Supply Voltage, +2.7V to +5.25V. For QSOP, connect pin 4 to pin 5.
7, 14
STATB,
STATA
Mode Status Pin B/A. Indicates the operating mode of comparator B/A.
STATB/STATA is high for auto-standby mode or for low-power mode, and during
the transition to high-speed mode. STATB/STATA = low indicates that comparator
B/A is in high-speed mode. STATB/STATA can source 3mA to power additional
circuitry.
6, 13
INB-, INA-
Inverting Input for Comparator B/A
5, 12
INB+, INA+
Noninverting Input for Comparator B/A
11
LP
Low Power Mode Input for both comparators. Drive LP high for low-power mode.
Drive LP low for high-speed mode (STO_ = GND) or for high-speed mode with auto-
standby. Connect to GND if low-power mode will not be used. Connect to V
CC
if
high-speed mode will not be used.
N.C.
No connection. Not internally connected.
SO
MAX977
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