TC554161AFT-70,-85,-10,-70L,-85L,-10L
2001-08-17 5/10
AC CHARACTERISTICS AND OPERATING CONDITIONS
(Ta =
==
= 0° to 70°C, V
DD
=
==
= 5 V ±
±±
± 10%)
READ CYCLE
TC554161AFT
-70,-70L -85,-85L -10,-10L
SYMBOL PARAMETER
MIN MAX MIN MAX MIN MAX
UNIT
t
RC
Read Cycle Time 70 ¾ 85 ¾ 100 ¾
t
ACC
Address Access Time ¾ 70 ¾ 85 ¾ 100
t
CO
Chip Enable Access Time ¾ 70 ¾ 85 ¾ 100
t
OE
Output Enable Access Time ¾ 35 ¾ 45 ¾ 50
t
BA
Data Byte Control Access Time ¾ 35 ¾ 45 ¾ 50
t
OH
Output Data Hold Time 10 ¾ 10 ¾ 10 ¾
t
COE
Chip Enable Low to Output Active 10 ¾ 10 ¾ 10 ¾
t
OEE
Output Enable Low to Output Active 5 ¾ 5 ¾ 5 ¾
t
BE
Data Byte Control Low to Output Active 5 ¾ 5 ¾ 5 ¾
t
OD
Chip Enable High to Output High-Z ¾ 25 ¾ 30 ¾ 35
t
ODO
Output Enable High to Output High-Z ¾ 25 ¾ 30 ¾ 35
t
BD
Data Byte Control High to Output High-Z ¾ 25 ¾ 30 ¾ 35
ns
WRITE CYCLE
TC554161AFT
-70,-70L -85,-85L -10,-10L
SYMBOL PARAMETER
MIN MAX MIN MAX MIN MAX
UNIT
t
WC
Write Cycle Time 70 ¾ 85 ¾ 100 ¾
t
WP
Write Pulse Width 50 ¾ 55 ¾ 60 ¾
t
CW
Chip Enable to End of Write 60 ¾ 70 ¾ 80 ¾
t
BW
Data Byte Control to End of Write 50 ¾ 55 ¾ 60 ¾
t
AS
Address Setup Time 0 ¾ 0 ¾ 0 ¾
t
WR
Write Recovery Time 0 ¾ 0 ¾ 0 ¾
t
DS
Data Setup Time 30 ¾ 35 ¾ 40 ¾
t
DH
Data Hold Time 0 ¾ 0 ¾ 0 ¾
t
OEW
R/W High to Output Active 5 ¾ 5 ¾ 5 ¾
t
ODW
R/W Low to Output High-Z ¾ 25 ¾ 30 ¾ 35
ns
AC TEST CONDITIONS
PARAMETER TEST CONDITION
Output load 100 pF + 1 TTL Gate
Input pulse level 0.6 V, 2.4 V
Timing measurements 1.5 V
Reference level 1.5 V
t
R
, t
F
5 ns
