Datasheet
Table Of Contents
- Table 1. Device summary
- 1 Description
- Figure 1. Logic diagram (STM6717/18)
- Figure 2. Logic diagram (STM6777/78)
- Figure 3. Logic diagram (STM6719/20)
- Figure 4. Logic diagram (STM6779/80)
- Table 2. Signal names
- Figure 5. STM6717/18 SOT23-5 connections
- Figure 6. STM6777/78 SOT23-6 connections
- Figure 7. STM6719/20 SOT23-6 connections
- Figure 8. STM6779/80 SOT23-6 connections
- 1.1 Pin descriptions
- 1.1.1 Active-low, push-pull reset output (RST) - STM6718/20/78/80
- 1.1.2 Active-low, open drain reset output (RST) - STM6717/19/77/79
- 1.1.3 Push-button reset input (MR)
- 1.1.4 Manual reset delay input (MRC) - STM6777/78/79/80)
- 1.1.5 Primary supply voltage monitoring input (VCC1)
- 1.1.6 Secondary supply voltage monitoring input (VCC2)
- 1.1.7 Adjustable reset comparator input (RSTIN; STM6719/20/79/80)
- 2 Operation
- 3 Typical operating characteristics
- Figure 13. Supply current vs. temperature (VCC1 = 5.5 V; VCC2 = 3.6 V)
- Figure 14. Supply current vs. temperature (VCC1 = 3.6 V; VCC2 = 2.75 V)
- Figure 15. Supply current vs. temperature (VCC1 = 3.0 V; VCC2 = 2.0 V)
- Figure 16. Supply current vs. temperature (VCC1 = 2.0 V; VCC2 = 1.0 V)
- Figure 17. Normalized VCC reset time-out period vs. temperature
- Figure 18. Maximum VCC transient duration vs. reset threshold overdrive
- Figure 19. Normalized VRST1 threshold vs. temperature
- Figure 20. Normalized VRST2 threshold vs. temperature
- Figure 21. Reset input threshold vs. temperature
- Figure 22. VCC1-to-reset delay vs. temperature
- Figure 23. Reset input-to-reset output delay vs. temperature
- Figure 24. MR-to-reset output delay vs. temperature (VCC1 = 3.6V)
- 4 Maximum rating
- 5 DC and AC parameters
- 6 Package mechanical data
- Figure 28. SOT23-5 - 5-lead small outline transistor package mechanical drawing
- Table 8. SOT23-5 - 5-lead small outline transistor package mechanical data
- Figure 29. SOT23-6 - 6-lead small outline transistor package mechanical drawing
- Table 9. SOT23-6 - 6-lead small outline transistor package mechanical data
- Figure 30. Carrier tape for SOT23-5L and SOT23-6L
- Table 10. Carrier tape dimensions for SOT23-5L and SOT23-6L
- 7 Part numbering
- 8 Revision history

DC and AC parameters STM6717/6718/6719/6720/STM6777/6778/6779/6780
20/30 Doc ID 11469 Rev 8
V
RST2
(4)
V
TH2
V
CC2
reset threshold
T (falling) 3.000 3.075 3.150 V
S (falling) 2.850 2.925 3.000 V
R (falling) 2.550 2.625 2.700 V
Z (falling) 2.250 2.313 2.375 V
Y (falling) 2.125 2.188 2.250 V
W (falling) 1.620 1.665 1.710 V
V (falling) 1.530 1.575 1.620 V
I (falling) 1.350 1.388 1.425 V
H (falling) 1.275 1.313 1.350 V
G (falling) 1.080 1.110 1.140 V
F (falling) 1.020 1.050 1.080 V
K (falling) 0.895 0.925 0.955 V
J (falling) 0.845 0.875 0.905 V
E (falling) 0.810 0.833 0.855 V
D (falling) 0.765 0.788 0.810 V
V
HYST
Reset threshold hysteresis Referenced to V
RST
typical 0.5 %
t
RD
V
CC
to RST delay
V
CC1
= (V
RST1
+ 100 mV) to
(V
RST
– 100 mV)
20 µs
V
CC2
= (V
RST2
+ 75 mV) to
(V
RST2
– 75 mV)
20 µs
t
rec
t
RP
RST pulse width
blank 140 210 280
msB 8.8 13.2 17.6
G 600 900 1200
Adjustable reset comparator input (STM6719/20/79/80)
V
RSTIN
RSTIN input threshold 611 626.5 642 mV
I
RSTIN
RSTIN input current –25 +25 nA
RSTIN hysteresis 3 mV
t
RSTIND
RSTIN to RST
output delay
V
RSTIN
to (V
RSTIN
– 30 mV) 22 µs
Table 6. DC and AC characteristics (continued)
Sym
Alter-
native
Description Test condition
(1)
Min Typ Max Unit