LATCH
Type
Technology
Bipolar
CMOS
BiCMOS
Advanced CMOS
PRE
•
CLR
Q
•
Q
Curcuit Output
Device
TTL LS
S
ALS AS
F
HC HCT BCT ABT LVT ALVT
AC
ACT
AHC AHCT LV LV-AT LVC ALVC AVC AUC
S-R
AD
4
2S
Q
279
×
×
●A
●B
8
8
2S
2S
259
4724
Q
Q
●
●/● -/ ●
×/-
×/-/-
×/-/-
×/-/-
4
4
4
8
2S
2S
2S
2S
75
77
375
100
Q
Q
Q
Q
×
×
●
●
×/● ×/●
×/-
×/-
BIS
8
8
8
8
8
9
9
10
10
3S
3S
3S
3S
3S
3S
3S
3S
3S
990
991
666
996
667
992
993
994
995
Q
Q
Q
Q
Q
Q
Q
Q
Q
●
×
●
●
●
●
×
●
×
B
C
B
C
C
R/B
8
8
8
8
2S
3S
3S
3S
C
116
373
2373
533
Q
Q
Q
Q
×
●
●
●A
●
●
●
×
●/● ●/● ●/-
●
H●
×/●/● ●/●/●
●
●
●
●
●A
●A
●
●
●A
●A
H●
●A ●A
●C ●A
●B
×/● ×/● ×/- ●A
●/● ●/● ●/- ●A
●/● ×/● ×/-
×/●/- ×/●/-
×/●/● ×/●/●
×/●/● ×/●/-
●
H●
8
3S
Q
573
●
×
8
8
8
8
8
8
8
8
9
9
9
9
9
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
3S
563
580
873
880
845
29845
846
29846
843
1843
29843
844
29844
841
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
Q
●B
×
C
P
B
B
B
B
B
B
B
B
B
●B ×A
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
×A
×
×
×
×
×
×
×
×
×
×
×/-
×/-
●
●
×
×
×
●
×
×
×
×
×
×A
×
×
●/-
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
×/-/-
D
×/-
●A
×/-
10
10
10
10
12/24
12/24
●A
29841
842
29842
16260
162260
×
×/-
H●
H●
H●
H●
●
16
3S
Q
16373
●A H● H●
●
●
×
●
●
●A
H●
●
●
H●A
16
16
3S
3S
16533
Q
Q
162373
H●
H●
18
20
20
3S
3S
3S
B
16843
16841
162841
Q
Q
Q
●
●
●
×
●
×
H●
H●
●
H●A
32
3S
Q
32373
*
*
H● H●
Explanatory notes [Type] S-R: S-R Latch AD: Addressable Latch BIS: Bistable Latch
[Type] R-B: Read-Back Latch D: D-Type Transparent Latch
[PRE ･ CLR] B: Preset and Clear C: Clear Only
[Output] 2S:Totem pole Output 3S: 3-State Output
[Q･Q] B: Q･-Output Q: Q-Output Q: Q-Output
Status
●: Product available in technology indicated
*: New product planned in technology indicated
×: Discontinued
■: Not recommended for new designs
HC: SN74HCxx / CD74HCxx
HCT: SN74HCxx / CD74HCTxx
149
TI [ TEXAS INSTRUMENTS ]
