ST2129QTR datasheet(10/20 Pages) STMICROELECTRONICS

10 / 20 page

AC characteristics

ST2129

10/20

Doc ID 15967 Rev 1

AC characteristics

Load CL = 15 pF; driver tr = tf ≤ 2 ns over temperature range -40 °C to 85 °C.

Table 8.

AC characteristics - test conditions: VL = 1.65 – 1.95 V

Symbol

Parameter

VCC = 1.65 –

1.95 V

VCC = 2.3 –

2.7 V

VCC = 3.0 –

3.6 V

VCC = 4.5 –

5.5 V

Unit

Min

Max

Min

Max

Min

Max

Min

Max

tRVCC

Rise time I/OVCC

–

5.0

–

3.2

–

2.4

–

1.4

tFVCC

Fall time I/OVCC

–

1.5

–

1.4

–

1.3

–

1.2

tRVL

Rise time I/OVL

–

2.8

–

2.7

–

2.6

–

2.6

tFVL

Fall time I/OVL

–

1.5

–

1.4

–

1.4

–

1.3

tI/OVL-VCC

Propagation delay time

I/OVL-LH to I/OVCC-LH

I/OVL-HL to I/OVCC-HL

tPLH

–

6.6

–

5.8

–

5.0

–

4.4

tPHL

–

4.1

–

3.8

–

3.6

–

3.4

tI/OVCC-VL

Propagation delay time

I/OVCC-LH to I/OVL-LH

I/OVCC-HL to I/OVL-HL

tPLH

–

4.9

–

4.4

–

4.1

–

4.4

tPHL

–

4.6

–

4.2

–

4.0

–

3.6

tPZL tPZH Output enable time

–

tPLZ tPHZ Output disable time

–

145

–

145

–

145

–

145

Data rate(1)

–

Mbps

Data rate is guaranteed based on the condition that output I/O signal rise/fall time is less than 15% of period of input I/O

signal; input I/O signal is at 50% duty-cycle and output I/O signal duty-cycle deviation is less than 50% ± 10%.

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