ST2329I datasheet(14/22 Pages) STMICROELECTRONICS

14 / 22 page

Pin configuration

ST2329I

14/22

Doc ID 018508 Rev 1

Figure 4.

Test circuit

Note:

The pull-up resistors shown in the above test circuit are optional and are only needed if total

pull-up on either end of the level translator needs to be lower than 10 k

Ω . In applications

where 10 k

Ω is sufficient, the external pull-up resistor is not required.

Table 12.

For test conditions: VL = 2.7 to 3.6 V (load CL = 15 pF; Rup = 10 kΩ;

driver tr = tf ≤ 2 ns) overtemperature range –40 °C to 85 °C

Symbol

Parameter

VCC = 4.3 - 5.5 V

Unit

Min.

Max.

tRVCC

Rise time I/OVCC

2.9

tFVCC

Fall time I/OVCC

17.2

tRVL

Rise time I/OVL

3.0

tFVL

Fall time I/OVL

9.7

tI/OVL-VCC

Propagation delay time

I/OVL-LH to I/OVCC-LH

I/OVL-HL to I/OVCC-HL

tPHL

2.7

tPHL

10.6

tI/OVCC-VL

Propagation delay time

I/OVCC-LH to I/OVL-LH

I/OVCC-HL to I/OVL-HL

tPHL

1.9

tPHL

4.8

tPZL tPZH

tPLZ tPHZ

Output enable and disable time

Dis

Data rate(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 is not less than 30%.

Note that the Rup of 4.7 kΩ is an effective R pull-up value. Since the device has an integrated 10 kΩ pull-up

resistor, an effective value of 4.7 k

Ω is obtained by adding an external 8.9 kΩ pull-up resistor.

7.2

MHz

Table 13.

Test circuit

Test

Switch

Driving I/OVL

Driving I/OVCC

Open drain driving

tPLH, tPHL

Open

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