CAT823 Datasheet, PDF (4/15 Pages) Catalyst Semiconductor – System Supervisory Voltage Reset with Watchdog and Manual Reset

CAT823, CAT824, CAT825
ELECTRICAL OPERATING CHARACTERISTICS
DC Characteristics: V_CC = 3.0V to 5.5V for L/M versions; V_CC = 2.0V to 3.6V for the R/S/T/Y/Z version,
-40ºC ≤ T _A ≤ +85ºC unless otherwise noted. Typical Values at T_A = 25ºC and V_CC = 5V for L/M versions;
V_CC = 3.3V for the T/S versions; V_CC = 3.0V for the R version; and V_CC = 2.5V for the Y/Z versions.⁽¹⁾
Symbol Parameter
Conditions
Min
Typ Max Units
CAT823 (L/M Versions)
CAT824 (L/M Versions)
6
17
µA
I_CC Supply Current
CAT823 (R/S/T/Y/Z Versions)
CAT824 (R/S/T/Y/Z Versions)
4
12
µA
CAT825 (L/M Versions)
3
8
µA
CAT825 (R/S/T/Y/Z Versions)
2
6
µA
V_RST Reset Threshold
Reset Threshold
Tempco
CAT82_L at -40ºC ≤ T_A ≤ +85ºC
CAT82_M at -40ºC ≤ T_A ≤ +85ºC
CAT82_T at -40ºC ≤ T_A ≤ +85ºC
CAT82_S at -40ºC ≤ T_A ≤ +85ºC
CAT82_R at -40ºC ≤ T_A ≤ +85ºC
CAT82_Z at -40ºC ≤ T_A ≤ +85ºC
CAT82_Y at -40ºC ≤ T_A ≤ +85ºC
4.50
4.63 4.75 V
4.25
4.38 4.50 V
3.00
3.08 3.15 V
2.85
2.93 3.00 V
2.55
2.63 2.70 V
2.25
2.32 2.38 V
2.13
2.19 2.25 V
40
ppm/ºC
Reset Threshold
Hysteresis
CAT82_L/M
CAT82_R/S/T/Y/Z
t_RD V_CC to Reset Delay⁽²⁾ V_CC = V_TH to (V_TH - 100mV)
t_RP
Reset Active
Timeout Period
10
mV
5
mV
20
µs
140
200 400 ms
CAT82_L/M, V_CC = V_{RST max},
V_OH
R¯¯E¯S¯E¯T¯ Output High ^{ISOURCE = -120µA}
Voltage
CAT82_T/S/R/Z/Y, V_CC = V_{RST max},
I_SOURCE = -30µA
V_CC - 1.5V
0.8 x V_CC
CAT82_L/M, V_CC = V_{RST min},
I_SINK = 3.2mA
CAT82_T/S/R/Z/Y, V_CC = V_{RST min},
V_OL
R¯¯E¯S¯E¯T¯ Output Low ^{ISINK = 1.2mA}
Voltage
T_A = 0ºC to +70ºC, V_CC = 1V,
V_CC falling, I_SINK = 50µA
0.4
V
0.3
0.3
T_A = T_MIN to T_MAX, V_CC = 1.2V,
V_CC falling, I_SINK = 100µA
0.3
I_SOURCE
R¯¯E¯S¯E¯T¯ Output
CAT82_L/M, Reset = 0V, V_CC = 5.5V
Short-Circuit Current _{CAT82_L/M, Reset = 0V, VCC = 3.6V}
1.5
mA
0.8
V_OH
V_CC > 1.8V, I_SOURCE = -150µA
0.8 x V_CC
Reset Output
V_OL ^Voltage
CAT824L/M & CAT825L/M,
V_CC = V_{RST max}, I_SINK = 3.2mA
CAT824R/S/T/Y/Z & CAT825R/S/T/Y/Z,
V_CC = V_{RST max}, I_SINK = 1.2mA
0.4
V
0.3
Notes:
(1) Over-temperature limits are guaranteed by design and not production tested.
(2) The RESET short-circuit current is the maximum pull-up current when reset is driven low by a bidirectional output.
Doc. No. MD-3027 Rev. D
4
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Characteristics subject to change without notice