Datasheet

SN74FB2040
8-BIT TTL/BTL TRANSCEIVER
SCBS173M – NOVEMBER 1991 – REVISED JUNE 2001
5–67
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO
V
CC
= 5 V,
T
A
= 25°C
MIN MAX UNIT
(INPUT) (OUTPUT)
MIN TYP MAX
t
PLH
3.2 4.5 6 2.4 6.5
t
PHL
AI
B
2.8 4.2 5.6 2.7 5.8
ns
t
PLH
2.3 3.8 5.7 1.9 6.2
t
PHL
B
AO
2.3 4.2 5.9 2 8.2
ns
t
PLH
3.7 5.1 6.7 3 7
t
PHL
OEB
B
3.1 4.6 5.9 3 6.1
ns
t
PLH
3.6 5.2 6.8 3.3 7
t
PHL
OEB B
2.9 4.4 5.9 2.6 6.1
ns
t
PZH
2.5 4 5.5 2.1 5.8
t
PZL
OEA AO
2.1 3.6 4.8 2 5
ns
t
PHZ
2.3 4.1 5.9 1.9 6.5
t
PLZ
OEA AO
1.6 3.1 4.5 1.4 4.7
ns
t
sk(p)
Skew for any single channel t
PHL
– t
PLH
, AI to B or B to AO 0.5 ns
t
sk(o)
Skew between drivers in the same package, AI to B or B to AO 0.4 ns
t
r
Rise time, 1.3 V to 1.8 V, B port 2 2.8 3.8 1.7 ns
t
f
Fall time, 1.8 V to 1.3 V, B port 1 1.9 3 1 4.2 ns
t
(pr)
B-port input pulse rejection 1 3.4 ns