SNIS107K – MAY 2000 – REVISED MARCH 2013
SERIAL BUS DIGITAL SWITCHING CHARACTERISTICS
Unless otherwise noted, these specifications apply for V
+
= 2.65V to 3.6V for the LM74CIBP -3, LM74CITP-3, V
+
= 3.0V to
3.6V for the LM74CIM -3 and V
+
= 4.5V to 5.5V for the LM74 -5
(1)
; C
L
(load capacitance) on output lines = 100 pF unless
otherwise specified.
Boldface limits apply for T
A
= T
J
= T
MIN
to T
MAX
;
all other limits T
A
= T
J
= +25°C, unless otherwise
noted.
Symbol
t
1
t
2
t
3
t
4
t
5
t
6
t
7
(1)
SC (Clock) Period
CS Low to SC (Clock) High Set-Up Time
CS Low to Data Out (SO) Delay
SC (Clock) Low to Data Out (SO) Delay
CS High to Data Out (SO) TRI-STATE
SC (Clock) High to Data In (SI) Hold Time
Data In (SI) Set-Up Time to SC (Clock) High
Parameter
Conditions
Typical
(2)
Limits
(3)
0.16
DC
100
70
100
200
50
30
Units
(Limit)
μs
(min)
(max)
ns (min)
ns (max)
ns (max)
ns (max)
ns (min)
ns (min)
(2)
(3)
All SOP (LM74CIM) parts will function over the V
+
supply voltage range of 3V to 5.5V. All DSBGA (LM74SIBP and LM75CITP) parts will
function over the V
+
supply voltage range of 2.65V to 5.5V. The SOP (LM74CIM) parts are tested and specified for rated temperature
error at their nominal supply voltage for temperature ranges of
−10°C
to +65°C,
−55°C
to +125°C and
−55°C
to +150°C. For the SOP
(LM74CIM) parts, the temperature error specifications for temperature ranges of
−40°C
to +85°C,
−25°C
to +110°C, and
−40°C
to
+110°C include error induced by power supply variation of ±5% from the nominal value. For the LM74CIM (SOP) parts, the temperature
error will increase by ±0.3°C for a power supply voltage (V
+
) variation of ±10% from the nominal value.For the LM74CIBP-3 and
LM74CITP-3 (DSBGA) parts all accuracies are ensured over the supply range of 2.65V to 3.6V, except for the temperature ranges of -
55°C to 125°C and
−55°C
to +150°C where the accuracy applies for the nominal supply voltage of 3.3V. For the LM74CIBP-5 and
LM74CITP-5 (DSBGA) parts all accuracies are guranteed over the supply range of 4.75V to 5.25V, except for the temperature ranges of
-55°C to 125°C and
−55°C
to +150°C where the accuracy applies for the nominal supply voltage of 5.0V. For the LM74CIBP and
LM74CITP over -55°C to 125°C and
−55°C
to +150°C, a power supply variation of ±10% will degrade the accuracy by ±0.3°C.
Typicals are at T
A
= 25°C and represent most likely parametric norm.
Limits are specified to AOQL (Average Outgoing Quality Level).
Figure 5. Data Output Timing Diagram
6
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