參數(shù)資料
型號: CD74FCT374SM
廠商: Texas Instruments, Inc.
元件分類: 通用總線功能
英文描述: BiCMOS FCT Interface Logic, Octal D-Type Flip-Flop, Three-State
中文描述: 聯(lián)邦首都的BiCMOS邏輯接口,八路D類觸發(fā)器,三態(tài)
文件頁數(shù): 6/8頁
文件大?。?/td> 34K
代理商: CD74FCT374SM
8-6
Test Circuits and Waveforms
NOTE:
9. Pulse Generator for All Pulses: Rate
1.0MHz; Z
OUT
50
;
t
f
, t
r
2.5ns.
FIGURE 1. TEST CIRCUIT
FIGURE 2. SETUP, HOLD, AND RELEASE TIMING
FIGURE 3. PULSE WIDTH
FIGURE 4. ENABLE AND DISABLE TIMING
FIGURE 5. PROPAGATION DELAY
3V
0
DUT
PULSE Z
O
GEN
7V
500
R
L
50pF
500
R
L
V
CC
R
T
R
T
= Z
O
V
0
C
L
V
I
t
r
, t
f
= 2.5ns
(NOTE 9)
SWITCH POSITION
TEST
SWITCH
t
PLZ
, t
PZL
, Open Drain
t
PHZ
, t
PZH
, t
PLH
, t
PHL
DEFINITIONS:
C
L
= Load capacitance, includes jig and probe
capacitance.
R
T
= Termination resistance, should be equal to Z
OUT
of
the Pulse Generator.
V
IN
= 0V to 3V.
Input: t
r
= t
f
= 2.5ns (10% to 90%), unless otherwise specified
Closed
Open
ASYNCHRONOUS CONTROL
t
H
t
SH
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
3V
1.5V
0V
t
H
t
SH
PRESET CLEAR
CLOCK ENABLE
ETC.
SYNCHRONOUS CONTROL
t
REM
DATA
INPUT
TIMING
INPUT
t
W
LOW-HIGH-LOW
PULSE
HIGH-LOW-HIGH
PULSE
1.5V
1.5V
3V
1.5V
0V
CONTROL INPUT
OUTPUT
NORMALLY LOW
OUTPUT
NORMALLY HIGH
SWITCH
OPEN
t
PZL
3.5V
1.5V
1.5V
0V
t
PLZ
t
PHZ
t
PZH
0V
3.5V
0.3V
0.3V
V
OL
V
OH
SWITCH
CLOSED
ENABLE
DISABLE
1.5V
3V
0V
1.5V
3V
0V
t
PLH
SAME PHASE
INPUT TRANSITION
t
PHL
t
PLH
t
PHL
OPPOSITE PHASE
INPUT TRANSITION
OUTPUT
1.5V
V
OL
V
OH
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