TMS3471C

2/3-INCH NTSC TIMER

SOCS028B – AUGUST 1991

7

POST OFFICE BOX 655303

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

S1

CL = 20 pF

10

S2,3

CL = 40 pF

10

ABIN, GT, PD, PI, PS, T

CL =20 pF

30

GT1, GT2, GT3, SH1

CL = 20 pF

10

tr

Rise time

SH2,3

CL = 40 pF

10

ns

BCP1, BCP2

CL = 50 pF

100

SC, SC(90)

CL = 15 pF

30

CLK2M

CL =50 pF

50

All other outputs

CL = 50 pF

200

S1

CL = 20 pF

8

S2,3

CL = 40 pF

8

ABIN, GT, PD, PI, PS, T

CL =20 pF

30

GT1, GT2, GT3, SH1

CL = 20 pF

8

tf

Fall time

SH2,3

CL = 40 pF

8

ns

BCP1, BCP2

CL = 50 pF

100

SC, SC(90)

CL = 15 pF

30

CLK2M

CL =50 pF

50

All other outputs

CL = 50 pF

100

S1 rising edge to S2,3 rising edge

±5

S1 falling edge to SH1 falling edge

–3

–8

–13

S1 rising edge to GT1 falling edge

–3

–8

–13

t k( )

Skew time

SH2,3 rising edge to GT1 rising edge

±5

ns

tsk(o)

Skew time

S2,3 falling edge to SH2,3 falling edge

–3

–8

–13

ns

S2,3 falling edge to GT2 rising edge

–3

–8

–13

SH2,3 falling edge to GT2 rising edge

±5

SH2,3 rising edge to GT3 falling edge

±5

tw –tc /2

Pulse duration compared to

pulse duration at 50% duty

cycle†

S1 or S2, 3

±5

ns

† The S1 and S2,3 outputs ideally exhibit a 50% duty cycle. This parameter indicates how much the duty cycle may shift while a constant cycle

time is maintained. For example, for a 210-ns cycle time, tw(H) = 110 ns and tw(L) = 100 ns are possible.