ST2349 Просмотр технического описания (PDF) - STMicroelectronics
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ST2349 Datasheet PDF : 23 Pages
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ST2349
Electrical characteristics
5.2
AC characteristics (device driven by totem pole driver )
Table 10.
Symbol
AC characteristics (test conditions: VL = 1.65 – 1.8 V (load CL = 15 pF; Rup = 10 kΩ; driver
tr = tf ≤ 2 ns) over temperature range -40 °C to 85 °C)
Parameter
VCC = 1.8 – 2.5 V
Min
Max
VCC = 2.7 – 3.6 V
Min
Max
VCC = 4.3 – 5.5 V
Min
Max
Unit
tRVCC Rise time I/OVCC
7
3
4
ns
tFVCC Fall time I/OVCC
7
3
3
ns
tRVL Rise time I/OVL
6
4
5
ns
tFVL Fall time I/OVL
4
4
4
ns
Propagation delay time
tI/OVL- I/OVL-LH to I/OVCC-LH
tPLH
6
5
4
ns
VCC I/OVL-HL to I/OVCC-HL
tPHL
5
5
5
ns
tI/OVCC-
VL
Propagation delay time
I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL
tPLH
tPHL
6
4.5
5
5.2
4
ns
7
ns
tPZL tPZH Output enable and
En
10
10
10
ns
tPLZ tPHZ disable time
Dis
40
40
40
ns
DR
Data rate(1)
12
32
32 MHz
1. The data rate is guaranteed based on the condition that the output I/O signal rise/fall time is less than 15% of the input I/O
signal period; the input I/O signal is at 50% duty cycle and the output I/O signal duty cycle deviation not less than 30%.
Table 11.
Symbol
AC characteristics (test conditions: VL = 2.5 – 2.7 V (load CL = 15 pF; Rup = 10 kΩ; driver
tr = tf ≤2 ns) over temperature range -40 °C to 85 °C)
Parameter
VCC = 2.7 −3.6 V
Min
Max
VCC = 4.3 −5.5 V
Unit
Min
Max
tRVCC Rise time I/OVCC
6
tFVCC Fall time I/OVCC
3
tRVL
Rise time I/OVL
5
tFVL
Fall time I/OVL
3
Propagation delay time tPLH
3.5
tI/OVL-VCC I/OVL-LH to I/OVCC-LH
I/OVL-HL to I/OVCC-HL tPHL
4
Propagation delay time tPLH
2.5
tI/OVCC-VL I/OVCC-LH to I/OVL-LH
I/OVCC-HL to I/OVL-HL tPHL
4
4
ns
3
ns
5
ns
3
ns
3
ns
4
ns
ns
2.1
ns
ns
4
ns
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