参数资料
型号: 74ALS648N
厂商: NXP SEMICONDUCTORS
元件分类: 通用总线功能
英文描述: Transceiver/register
中文描述: ALS SERIES, 8-BIT REGISTERED TRANSCEIVER, INVERTED OUTPUT, PDIP24
封装: 0.300 INCH, PLASTIC, DIP-24
文件页数: 8/13页
文件大小: 155K
代理商: 74ALS648N
Philips Semiconductors
Product specification
74ALS646/74ALS646-1
74ALS648/74ALS648-1
Transceiver/register
1991 Feb 08
8
AC ELECTRICAL CHARACTERISTICS FOR 74ALS648/74ALS648-1
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
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
t
PZH
t
PZL
t
PHZ
t
PLZ
Maximum clock frequency
Waveform 1
100
MHz
Propagation delay
CPBA to An, CPAB to Bn
Waveform 1
5.0
6.0
13.0
13.0
ns
Propagation delay
An to Bn or Bn to An
Waveform 2, 3
1.0
3.0
7.0
9.0
ns
Propagation delay
SBA to An or SAB to Bn (A or B Low)
Waveform 2, 3
5.0
5.0
13.0
11.0
ns
Propagation delay
SBA to An or SAB to Bn (A or B High)
Waveform 2, 3
4.0
5.0
11.0
11.0
ns
Output enable time
OE to An or Bn
Waveform 5
Waveform 6
2.0
4.0
8.0
13.0
ns
Output disable time
OE to An or Bn
Waveform 5
Waveform 6
1.0
2.0
8.0
10.0
ns
Output enable time
DIR to An or Bn
Waveform 5
Waveform 6
3.0
5.0
10.0
12.0
ns
Output disable time
DIR to An or Bn
Waveform 5
Waveform 6
2.0
2.0
11.0
11.0
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
t
su
(H)
t
su
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
w
(L)
Setup time, High or Low
An or Bn to CPAB or CPBA
Waveform 4
5.0
5.0
ns
Hold time, High or Low
An or Bn to CPAB or CPBA
Waveform 4
0.0
1.0
ns
Pulse width, High or Low
CPAB or CPBA
Waveform 1
6.0
4.0
ns
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