SN54AS867, SN54AS869
SN74ALS867A, SN74ALS869, SN74AS867, SN74AS869
SYNCHRONOUS 8-BIT UP/DOWN COUNTERS
SDAS115C – DECEMBER 1982 – REVISED JANUARY 1995
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
VIK
VOH
VOL
II
IIH
IIL
ENT
Other inputs
ENT
Other inputs
RCO
Other outputs
VCC = 5.5 V,
VCC = 5 5 V
5.5 V,
VCC = 5 5 V
5.5 V,
TEST CONDITIONS
VCC = 4.5 V,
VCC = 4.5 V to 5.5 V,
VCC = 4.5 V
II = –18 mA
IOH = – 2 mA
IOL = 20 mA,
VIL on ENT = 0.7 V
IOL = 20 mA
VI = 7 V
VI = 2 7 V
2.7
VI = 0 4 V
0.4
SN54AS867
MIN TYP†
MAX
–1.2
VCC – 2
0.34
0.5
0.34
0.1
40
20
–4
–2
0.5
0.1
40
20
–4
–2
mA
µA
mA
VCC – 2
SN74AS867
MIN TYP†
MAX
–1.2
UNIT
V
V
V
IO‡
VCC = 5.5 V,
VO = 2.25 V
– 30
– 112
– 30
– 112
mA
ICC
VCC = 5.5 V
134
195
134
195
mA
† All typical values are at VCC = 5 V, TA = 25°C.
‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS.
switching characteristics (see Figure 1)
VCC = 4.5 V to 5.5 V,
CL = 50 pF,
RL = 500
Ω,
TA = MIN to MAX§
SN54AS867
SN74AS867
MIN
fmax*
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPLH
tPHL
tPHL
40
CLK
CLK
5
RCO
Any Q
6
3
4
3
ENT
ENP
Clear (S0 or S1 low)
RCO
RCO
Any Q
5
5
5
7
31
19
12
16
19
21
16
21
23
MAX
MIN
50
5
6
3
4
3
5
5
5
7
22
16
11
15
10
17
14
17
21
MAX
MHz
ns
ns
ns
ns
ns
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
UNIT
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
§ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
13
TI [ TEXAS INSTRUMENTS ]
