74LVC_LVCH8T245_Q100 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 1 — 21 March 2013 5 of 28
NXP Semiconductors 74LVC8T245-Q100; 74LVCH8T245-Q100
8-bit dual supply translating transceiver; 3-state
6. Functional description
[1] H = HIGH voltage level; L = LOW voltage level; X = don’t care; Z = high-impedance OFF-state.
[2] The An inputs/outputs, DIR and OE
input circuit is referenced to V
CC(A)
; The Bn inputs/outputs circuit is referenced to V
CC(B)
.
[3] If at least one of V
CC(A)
or V
CC(B)
is at GND level, the device goes into suspend mode.
7. Limiting values
[1] The minimum input voltage ratings and output voltage ratings may be exceeded if the input and output current ratings are observed.
[2] V
CCO
is the supply voltage associated with the output port.
[3] V
CCO
+ 0.5 V should not exceed 6.5 V.
[4] For TSSOP24 package: P
tot
derates linearly at 5.5 mW/K above 60 C.
For DHVQFN24 package: P
tot
derates linearly at 4.5 mW/K above 60 C.
Table 3. Function table
[1]
Supply voltage Input Input/output
[3]
V
CC(A)
, V
CC(B)
OE
[2]
DIR
[2]
An
[2]
Bn
[2]
1.2 V to 5.5 V L L An = Bn input
1.2 V to 5.5 V L H input Bn = An
1.2 V to 5.5 V H X Z Z
GND
[3]
XXZZ
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to GND (ground = 0 V).
Symbol Parameter Conditions Min Max Unit
V
CC(A)
supply voltage A 0.5 +6.5 V
V
CC(B)
supply voltage B 0.5 +6.5 V
I
IK
input clamping current V
I
<0V 50 - mA
V
I
input voltage
[1]
0.5 +6.5 V
I
OK
output clamping current V
O
<0V 50 - mA
V
O
output voltage Active mode
[1][2][3]
0.5 V
CCO
+0.5 V
Suspend or 3-state mode
[1]
0.5 +6.5 V
I
O
output current V
O
=0VtoV
CCO
[2]
- 50 mA
I
CC
supply current I
CC(A)
or I
CC(B)
; per V
CC
pin - 100 mA
I
GND
ground current per GND pin 100 - mA
T
stg
storage temperature 65 +150 C
P
tot
total power dissipation T
amb
= 40 C to +125 C
[4]
-500mW
