SN74LVC2G17-Q1: Range for device output transition time

Emrys Maier

Part Number: SN74LVC2G17-Q1

Hello,

Can you provide limits for the output transition time (or output slew rate) across process and temperature variations for the 1.8-V supply range?

+1 Malcolm Lyn over 1 year ago

For this part at 1.8V we get ROL = 95 and ROH = 98 from linear interpolation

t_LH(max) = 98 Ω * 50 pF * 2 = 4.75 ns

t_HL(max) = 95 Ω * 50 pF * 2 = 4.9 ns

Take the largest value.

Best,

Malcolm

0 Emrys Maier over 1 year ago in reply to Malcolm Lyn

Thanks Malcolm,

I expect that is a good estimate to work from.

Can you provide some output curves, either from the bench or simulation, to correlate to the calculated values?

+1 Malcolm Lyn over 1 year ago in reply to Emrys Maier

Here are simulation curves from the IBIS model:

Red is strong/fast corner time and blue is weak/slow corner time.

Both corners are slowest on the rising edge with the slow corner having a delay of 8.49 ns and the fast corner having a delay of 2.16 ns.