
4.1 ABSOLUTE MAXIMUM SPECIFICATIONS
Operating temp ............................................................. as designated by suffix
Storage temp .................................................................... -55OC to +125OC
VCC ............................................................................... -0.5 to +6.5V
Max continuous pin current, any control or drive pin ............................................ ±20mA
Short circuit duration to ground, any pin ...................................................... infinite
Short circuit duration to VCC, any pin ......................................................... infinite
Voltage forced onto any pin ................................................. -0.6V to (Vcc + 0.6) Volts
4.2 RECOMMENDED OPERATING CONDITIONS
VCC ............................................................................... +2.5 to 5.25V
Supply ripple+noise ................................................................. 20mV p-p max
Load capacitance ....................................................................... 0 to 50pF
Cs value .......................................................................... 10nF to 100nF
4.3 AC SPECIFICATIONS Vcc = 3.0, Ta = recommended operating range
s
400
350
300
Heartbeat pulse width
THB
Cx = 5pF
ns
4
Pulse edge falltime
TF
Cx = 5pF
ns
6
Pulse edge risetime
TR
s
14
6
QT pulse spacing
TQ
Slosh filter disabled
ms
80
Response time
TR
counts
500
Maximum burst length counts
NLC
ms
3.5
0
Burst length, time
TBL
ms
75
Burst spacing interval
TBS
s
4
Transfer duration
TPT
s
2
Charge duration
TPC
Notes
Units
Max
Typ
Min
Description
Parameter
4.4 SIGNAL PROCESSING
Note 1
counts
190
Slosh filter length, counts
Note 2
seconds
15
Slosh filter length, time
Note 1
counts
3
Hysteresis
Note 1
counts
150
Threshold, T2
Note 1
counts
250
Threshold, T1
Notes
Units
Max
Typ
Min
Description
Note 1: Counts of burst
Note 2: Uninterrupted detection / non-detection: Strap option.
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