参数资料
型号: 74ALS74ADB
厂商: NXP SEMICONDUCTORS
元件分类: 通用总线功能
英文描述: Dual D-type flip-flop with set and reset
中文描述: ALS SERIES, DUAL POSITIVE EDGE TRIGGERED D FLIP-FLOP, COMPLEMENTARY OUTPUT, PDSO14
封装: PLASTIC, SSOP2-14
文件页数: 4/10页
文件大小: 50K
代理商: 74ALS74ADB
Philips Semiconductors
Product specification
74ALS74A
Dual D-type flip-flop with set and reset
1996 Jul 01
4
DC ELECTRICAL CHARACTERISTICS
(Over recommended operating free-air temperature range unless otherwise noted.)
SYMBOL
PARAMETER
TEST CONDITIONS
1
LIMITS
UNIT
MIN
TYP
2
MAX
V
OH
High-level output voltage
V
CC
=
±
10%,
V
IL
= MAX, V
IH
= MIN
I
OH
= MAX
V
CC
– 2
V
V
OL
Low level output voltage
Low-level output voltage
V
= MIN, V
= MAX,
CC
V
IH
= MIN
I
OL
= 4mA
0.25
0.40
V
IL
I
OL
= 8mA
0.35
0.50
V
V
IK
Input clamp voltage
V
CC
= MIN, I
I
= I
IK
–0.73
–1.5
V
I
I
Input current at maximum input
voltage
Dn, CPn
V
CC
= MAX V = 7 0V
I
= 7.0V
0.1
mA
SDn, RDn
0.2
mA
I
IH
High level input current
High–level input current
Dn, CPn
V
CC
= MAX V = 2 7V
I
= 2.7V
20
μ
A
SDn, RDn
40
μ
A
I
IL
Low level input current
Low–level input current
Dn, CPn
CC
V
= MAX V = 0 4V
I
= 0.4V
–0.2
mA
SDn, RDn
–0.4
mA
I
O
Output current
3
V
CC
= MAX, V
O
= 2.25V
–30
–112
mA
I
CC
Supply current (total)
4
V
CC
= MAX
3.0
4.0
mA
NOTES:
1. For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions for the applicable type.
2. All typical values are at V
CC
= 5V, T
amb
= 25
°
C.
3. The output conditions have been chosen to produce a current that closely approximates one half of the true short–circuit output current, I
OS
.
4. Measure I
CC
with the Dn, CPn, and SDn grounded, then with Dn, CPn, and RDn grounded.
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
T
amb
= 0
°
C to +70
°
C
V
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
MAX
f
max
Maximum clock frequency
Waveform 1
80
MHz
t
PLH
t
PHL
Propagation delay
CPn to Qn or Qn
Waveform 1
3.0
3.0
14.0
14.0
ns
t
PLH
t
PHL
Propagation delay
SDn or RD to Qn or Qn
Waveform 2, 3
1.0
3.0
8.0
10.0
ns
AC SETUP REQUIREMENTS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
T
amb
= 0
°
C to +70
°
C
V
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
MAX
t
su
(H)
t
su
(L)
Setup time, High or Low
Dn to CPn
Waveform 1
6.0
6.0
ns
t
h
(H)
t
h
(L)
Hold time, High or Low
Dn to CPn
Waveform 1
0.0
0.0
ns
t
w
(H)
t
w
(L)
CPn Pulse width
High or Low
Waveform 1
6.0
6.0
ns
t
w
(L)
SDn or RDn Pulse width, Low
Waveform 2, 3
6.0
ns
t
rec
Recovery time, SDn or RDn to CPn
Waveform 2, 3
6.0
ns
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